Database Users

[REF][SuperFriendly] Explanation of Governors, I/O Schedulers and Kernels [23-Nov]

Introduction
"It takes few hours to make a thread but it doesn't even take few seconds to say Thanks"- arpith.fbi
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Code:
Don't be afraid to ask me anything.
I won't bite, but I might lick you.
Just thank me for this super brief thread.
Give credits to this thread by linking it if you're using any of my info.
Thank you to you too
Have you unlocked your bootloader of your current device ? If so, read it ! If not, learn the benifits ! :victory:
What is this thread about ? It is a very brief explanation of every governors and schedulers to let you find the best combo for your device.
I've been searching a lot about informations about Kernels, Governors, I/O Schedulers and also Android Optimization Tips. No matter its Google or XDA or other android forums. I will go into it and try the best I can to find these infos. So I thought of sharing it to here for the XPlay users.
My main reason to share this is to benefit users for better knowledge about Kernels, Governors, I/O Schedulers and Tips on Android Optimization. I'm not aware of whether where this should be posted, its related to kernels, governors and schedulers so I think it would be best if I share it to here. Yes, I wrote it word by word with references.Happy learning. :angel:
After months on XDA, no matter its in a development forum or Off Topic forum. Users kept on asking what's this what's that. And I'm sure that not all members will understand what is it until they bump into my thread
FAQs regarding on :-
-I/O Schedulers
-Kernel Governers
-Better RAM
-Better Battery
-FAQs
*Will add more when I found something useful.
Click to expand...
Click to collapse
I do a lot of asking by PM, to learn, it doesn't matter whether its a stupid one. (People who know me understands)
With my experience and lots of asking. I managed to find a lot of infos that we can use to optimize our phone.
I will try to explain as clear as I can.
Governors :-
-Smoothass
-Smartass
-SmartassV2
-SavagedZen
-Interactivex
-Lagfree
-Minmax
-Ondemand
-Conservative
-Brazilianwax
-Userspacce
-Powersave
-Performance
-Scary
-Lulzactive *
-Intellidemand *
-Badass *
-Lionheart *
-Lionheartx *
-Virtuous *
* Haven't gathered much needed information. Will add it later.
Explanation
OnDemand
Brief
Available in most kernels, and the default governor in most kernels. When the CPU load reaches a certain point, OnDemand will rapidly scale the CPU up to meet the demand, then gradually scale the CPU down when it isn't needed.
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Review
Brief says all. By a simple explantion, OnDemand scales up to the required frequency to undergo the action you are doing and rapidly scales down after use.
Conservative
Brief
It is similar to the OnDemand governor, but will scale the CPU up more gradually to better fit demand. Conservative governor provides a less responsive experience than OnDemand, but it does save batter
Click to expand...
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Review
Conservative is the opposite of Interactive; it will slowly ramp up the frequency, then quickly drops the frequency once the CPU is no longer under a certain usage.
Interactive
Brief
Available in latest kernels, it is the default scaling option in some stock kernels. Interactive governor is similar to the OnDemand governor with an even greater focus on responsiveness.
Click to expand...
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Review
Interactive is the opposite of Conservative; it quickly scales up to the maximum allowed frequency, then slowly drops the frequency once no longer in use.
Performance
Brief
Performance governer locks the phone's CPU at maximum frequency. While this may sound like an ugly idea, there is growing evidence to suggest that running a phone at its maximum frequency at all times will allow a faster race-to-idle. Race-to-idle is the process by which a phone completes a given task. After that it returns the CPU to extremely efficient low-power state.
Click to expand...
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Review
Good at gaming, Really good. Disadvantages are it may damage your phone if too much usage.
Powersave
Brief
The opposite of the Performance governor, the Powersave governor locks the CPU frequency at the lowest frequency set by the user.
Click to expand...
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Review
Set it to your desired minimum frequency and you won't have to look for your charger for once in a while.
Scary
Brief
A new governor wrote based on Conservative with some Smartass features, it scales accordingly to Conservative's way. It will start from the bottom. It spends most of its time at lower frequencies. The goal of this is to get the best battery life with decent performance. It will give the same performance as Conservative right now.
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Review
Hmm.. Overall I don't see any difference. After I understand its main objective. I was very curious and decided to use it again. Results are the same.. No difference. Report to me if anyone has tested this.
Userspace
Brief
Userspace is not a governor pre-set, but instead allows for non-kernel daemons or apps with root permissions to control the frequency. Commonly seen as a redundant and not useful since SetCPU and NoFrills exist.
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Review
Highly not recommended for use.
Smartass
Brief
It is based on the concept of the Interactive governor.
Smartass is a complete rewrite of the code of Interactive. Performance is on par with the “old” minmax and Smartass is a bit more responsive. Battery life is hard to quantify precisely but it does spend much more time at the lower frequencies.
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Review
Smartass is rather the governer that will save your battery and make use of your processor for daily use. Like the brief explantion said " Smartass will spend much more time on lower frequencies." So logically you don't need for sleep profiles anymore.
SmartassV2
Brief
Theoretically a merge of the best properties of Interactive and OnDemand; automatically reduces the maximum CPU frequency when phone is idle or asleep, and attempts to balance performance with efficiency by focusing on an "ideal" frequency.
Click to expand...
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Review
This is a much favourite to everybody. I believe almost everyone here is using SmartassV2. Yes, it is better than Smartass because of its speed no scaling frequencies from min to max at a short period of time.
Smoothass
Brief
A much more aggressive version of Smartass that is very quick to ramp up and down, and keeps the idle/asleep maximum frequency even lower.
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Review
In my personal experience, this is really useful for daily use. And yes, I'm using it all the time. It may decrease your battery life. I saw it OC itself to 1.4 gHz when I set it to 1.2. Good use. Recommended.
Brazilianwax
Brief
Similar to SmartassV2. More aggressive scaling, so more performance, but less battery.
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Review
Based on SmartassV2. But its advantage is a much more performance wise governor.
SavagedZen
Brief
Another SmartassV2 based governor. Achieves good balance between performance & battery as compared to Brazilianwax.
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Review
Not much difference compared to SmartassV2. But it is a optimized version of it.
Lagfree
Brief
Again, similar to Smartass but based on Conservative rather than Interactive, instantly jumps to a certain CPU frequency after the device wakes, then operates similar to Conservative. However, it has been noted as being very slow when down-scaling, taking up to a second to switch frequencies.
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Review
Used it before. Like the name of the governor, I didn't experience any lag whatsoever. Another governor based on performance, but not battery efficient.
MinMax
Brief
MinMax is just a normal governor. No scaling intermediate frequency scaling is used.
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Review
Well.. it's too normal that I can't really say anything about it..
Interactivex
Brief
InteractiveX governor is based heavily on the Interactive governor, enhanced with tuned timer parameters to optimize the balance of battery vs performance. InteractiveX governor's defining feature, however, is that it locks the CPU frequency to the user's lowest defined speed when the screen is off.
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Review
A better understanding from the brief to you users, this is an Interactive governor with a wake profile. More battery friendly than Interactive.
Due to current kernels doesn't have these governors. I will be delaying the explanation, its very interesting. If you want it ASAP, post below
-Lulzactive *
-Intellidemand *
-Badass *
-Lionheart *
-Lionheartx *
-Virtuous *
**********************************************************************************************************************************************************************
I/O Schedulers(thanks to droidphile)
Deadline
Goal is to minimize I/O latency or starvation of a request. The same is achieved by round robin policy to be fair among multiple I/O requests. Five queues are aggressively used to reorder incoming requests.
Advantages:
Nearly a real time scheduler.
Excels in reducing latency of any given single I/O.
Best scheduler for database access and queries.
Bandwidth requirement of a process - what percentage of CPU it needs, is easily calculated.
Like noop, a good scheduler for solid state/flash drives.
Disadvantages:
When system is overloaded, set of processes that may miss deadline is largely unpredictable.
Click to expand...
Click to collapse
Noop
Inserts all the incoming I/O requests to a First In First Out queue and implements request merging. Best used with storage devices that does not depend on mechanical movement to access data. Advantage here is that flash drives does not require reordering of multiple I/O requests unlike in normal hard drives.
Advantages:
Serves I/O requests with least number of cpu cycles. (Battery friendly?)
Best for flash drives since there is no seeking penalty.
Good throughput on db systems.
Disadvantages:
Reduction in number of cpu cycles used is proportional to drop in performance.
Click to expand...
Click to collapse
Anticipatory
Based on two facts
i) Disk seeks are really slow.
ii) Write operations can happen whenever, but there is always some process waiting for read operation.
So anticipatory prioritize read operations over write. It anticipates synchronous read operations.
Advantages:
Read requests from processes are never starved.
As good as noop for read-performance on flash drives.
Disadvantages:
'Guess works' might not be always reliable.
Reduced write-performance on high performance disks.
Click to expand...
Click to collapse
BFQ
nstead of time slices allocation by CFQ, BFQ assigns budgets. Disk is granted to an active process until it's budget (number of sectors) expires. BFQ assigns high budgets to non-read tasks. Budget assigned to a process varies over time as a function of it's behavior.
Advantages:
Believed to be very good for usb data transfer rate.
Believed to be the best scheduler for HD video recording and video streaming. (because of less jitter as compared to CFQ and others)
Considered an accurate i/o scheduler.
Achieves about 30% more throughput than CFQ on most workloads.
Disadvantages:
Not the best scheduler for benchmarking.
Higher budget assigned to a process can affect interactivity and increased latency.
Click to expand...
Click to collapse
CFQ
Completely Fair Queuing scheduler maintains a scalable per-process I/O queue and attempts to distribute the available I/O bandwidth equally among all I/O requests. Each per-process queue contains synchronous requests from processes. Time slice allocated for each queue depends on the priority of the 'parent' process. V2 of CFQ has some fixes which solves process' i/o starvation and some small backward seeks in the hope of improving responsiveness.
Advantages:
Considered to deliver a balanced i/o performance.
Easiest to tune.
Excels on multiprocessor systems.
Best database system performance after deadline.
Disadvantages:
Some users report media scanning takes longest to complete using CFQ. This could be because of the property that since the bandwidth is equally distributed to all i/o operations during boot-up, media scanning is not given any special priority.
Jitter (worst-case-delay) exhibited can sometimes be high, because of the number of tasks competing for the disk.
Click to expand...
Click to collapse
SIO
Simple I/O scheduler aims to keep minimum overhead to achieve low latency to serve I/O requests. No priority quesues concepts, but only basic merging. Sio is a mix between noop & deadline. No reordering or sorting of requests.
Advantages:
Simple, so reliable.
Minimized starvation of requests.
Disadvantages:
Slow random-read speeds on flash drives, compared to other schedulers.
Sequential-read speeds on flash drives also not so good.
Click to expand...
Click to collapse
VR
Unlike other schedulers, synchronous and asynchronous requests are not treated separately, instead a deadline is imposed for fairness. The next request to be served is based on it's distance from last request.
Advantages:
May be best for benchmarking because at the peak of it's 'form' VR performs best.
Disadvantages:
Performance fluctuation results in below-average performance at times.
Least reliable/most unstable.
Click to expand...
Click to collapse
Credits
-droidphile
-kokzhanjia

Reserved for kernel infos
Sent from my WT19i

Yes, we do have kernels with Lionheart, lulzactive and intellidemand.
Nice reference cheers.
Sent from Xperia Play (R800a) with Tapatalk

CosmicDan said:
Yes, we do have kernels with Lionheart, lulzactive and intellidemand.
Nice reference cheers.
Sent from Xperia Play (R800a) with Tapatalk
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Really ? Okay will add it in later
Sent from my WT19i

kokzhanjia said:
Really ? Okay will add it in later
Sent from my WT19i
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Yeah LuPuS has Lulzactive, Virtuous, Intellidemand, Lazy, Ondemandx, Lionheart and Badass added (but no mention of LionheartX).
Turbo kernel also has intellidemand but the parameters have been modified quite a bit (by me) to suit our snapdragon SOC's better. I think wedgess also put these changes into LuPuS too (at least one of the ICS/JB kernels he builds he said he did). The browser mode still has no effect AFAIK but in my experience it's more battery-friendly and better performance than on-demand (thanks mainly to dbus_input ramping). But many users have reported slightly better gaming experience with SmartAssv2.

Great reference, this will be of much help to new comers, thanks for the hard work you put into this.

CosmicDan said:
Yeah LuPuS has Lulzactive, Virtuous, Intellidemand, Lazy, Ondemandx, Lionheart and Badass added (but no mention of LionheartX).
Turbo kernel also has intellidemand but the parameters have been modified quite a bit (by me) to suit our snapdragon SOC's better. I think wedgess also put these changes into LuPuS too (at least one of the ICS/JB kernels he builds he said he did). The browser mode still has no effect AFAIK but in my experience it's more battery-friendly and better performance than on-demand (thanks mainly to dbus_input ramping). But many users have reported slightly better gaming experience with SmartAssv2.
Click to expand...
Click to collapse
Yeah. Saw your work Nice one.. anymore in depth infos about kernels at here ? I want to add a bonus one for this..
paragroth said:
Great reference, this will be of much help to new comers, thanks for the hard work you put into this.
Click to expand...
Click to collapse
Thanks
Coloured signatures are nice

Nah that's pretty much it
Sent from Xperia Play (R800a) with Tapatalk

Throughout my experience(mainly from observing CPU speeds during music playback), I found that:
Scary:
Ramps up to max after reaching a threshold (50/60% CPU load) then slow scales down to match as 50-80% CPU Load @ X MHz. After a while if load lowers (30-40%), it will clock down to match the 50-80% load. You will see a lot of 100% @ low MHz with this governor.
SavagedZen:
It maintains a 80-90% CPU Load @ X MHz for a fairly constant load. This one also scales based on the Max CPU Freq. settings. So the lower your Max CPU Freq, the better it is at maintaining the CPU Load/MHz balance (for music playback at least).
I didn't look at the source, so these are just from observations only. So I might be talking out of my ass.
Also, having good CPU Load at appropriate CPU Speeds may or may not contribute to battery life. No experiments showed that yet iirc.
Monitoring done via "Diagnosis - System Information" an app that generates an overlay with whatever information your want ie cpu load, speed, memory free, used, disk io, network io, etc.
Refresh rate kept at 5 seconds to keep CPU Load interference minimal (lower than ICS/JB CPU Info overlay from Development, Settings tab).

Great thread, this should be sticky!

jabberwocky_one said:
Throughout my experience(mainly from observing CPU speeds during music playback), I found that:
Scary:
Ramps up to max after reaching a threshold (50/60% CPU load) then slow scales down to match as 50-80% CPU Load @ X MHz. After a while if load lowers (30-40%), it will clock down to match the 50-80% load. You will see a lot of 100% @ low MHz with this governor.
SavagedZen:
It maintains a 80-90% CPU Load @ X MHz for a fairly constant load. This one also scales based on the Max CPU Freq. settings. So the lower your Max CPU Freq, the better it is at maintaining the CPU Load/MHz balance (for music playback at least).
I didn't look at the source, so these are just from observations only. So I might be talking out of my ass.
Also, having good CPU Load at appropriate CPU Speeds may or may not contribute to battery life. No experiments showed that yet iirc.
Monitoring done via "Diagnosis - System Information" an app that generates an overlay with whatever information your want ie cpu load, speed, memory free, used, disk io, network io, etc.
Refresh rate kept at 5 seconds to keep CPU Load interference minimal (lower than ICS/JB CPU Info overlay from Development, Settings tab).
Click to expand...
Click to collapse
Nono you are right. I read these before and your observation is just about it, thanks for the info
chabbe11 said:
Great thread, this should be sticky!
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Thank you
Sent from my WT19i with Real Xperia r1

Am I setting it up the right way?
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I prefer using that minimum and maximum.
And would this screen off profile work, even if I have configured the main minimum? The 100mhz for screen off really saves a lot of my battery.
Sent from my R800i using Tapatalk 2

Gr8 helped me a lot in understanding alll of this .....

bhavei said:
Am I setting it up the right way?
I prefer using that minimum and maximum.
And would this screen off profile work, even if I have configured the main minimum? The 100mhz for screen off really saves a lot of my battery.
Sent from my R800i using Tapatalk 2
Click to expand...
Click to collapse
Yes it is right. I didnt really tried the other way that you mentioned, because i have No-Frills pre-installed in my settings..but i see it worked. Of course it will save battery.. Nice
piku2008 said:
Gr8 helped me a lot in understanding alll of this .....
Click to expand...
Click to collapse
Will add more soon About kernels, Is there any BFS kernels around here ? Most kernels are CFS..
Sent from my WT19i with Real Xperia r1

kokzhanjia said:
About kernels, Is there any BFS kernels around here ? Most kernels are CFS..
Click to expand...
Click to collapse
There was, I ported it over a few months ago. But I removed it because it was causing priority issues. The latest BFS patch for our kernel has some critical bugs, so I ditched it. When I get ext# fixed in .60 kernel up and going I will probably take another crack at it, backporting one of the more recent 3.x BFS versions.
One of the LuPuS kernels might still have na laternative BFS version, but I think wedgess stopped building it for the same reason as me.

CosmicDan said:
There was, I ported it over a few months ago. But I removed it because it was causing priority issues. The latest BFS patch for our kernel has some critical bugs, so I ditched it. When I get ext# fixed in .60 kernel up and going I will probably take another crack at it, backporting one of the more recent 3.x BFS versions.
One of the LuPuS kernels might still have na laternative BFS version, but I think wedgess stopped building it for the same reason as me.
Click to expand...
Click to collapse
I see, there are really few BFS based kernels out there. BFS is better in my opinion so i would like to elaborate more about BFS to attract more users.
Btw, one guy in Xperia Mini, Mini Pro and Active forums had already successfully making it up and running for stock and CM ROMs. Its already hitted version 2.3
Maybe you could get some help from him ? Name is Mesa Kernel.
Sent from my WT19i with Real Xperia r1

kokzhanjia said:
I see, there are really few BFS based kernels out there. BFS is better in my opinion so i would like to elaborate more about BFS to attract more users.
Btw, one guy in Xperia Mini, Mini Pro and Active forums had already successfully making it up and running for stock and CM ROMs. Its already hitted version 2.3
Maybe you could get some help from him ? Name is Mesa Kernel.
Sent from my WT19i with Real Xperia r1
Click to expand...
Click to collapse
I was using v0.313 of BFS, it wasn't that hard - just had to adapt the patch for the Xperia's stupid kernel. That version is so unstable and buggy, in fact all 2.6.x BFS patches were so problematic that the official page has removed them.
I'll check it out, if he back-ported BFS for Linux kernel 3.0 and has them on GitHub, otherwise it would be easier just to do it myself. But I have other more important concerns for Zeus development right now, BFS doesn't really bring any significant performance boost (which is why it is continually rejected from AOSP inclusion).

CosmicDan said:
I was using v0.313 of BFS, it wasn't that hard - just had to adapt the patch for the Xperia's stupid kernel. That version is so unstable and buggy, in fact all 2.6.x BFS patches were so problematic that the official page has removed them.
I'll check it out, if he back-ported BFS for Linux kernel 3.0 and has them on GitHub, otherwise it would be easier just to do it myself. But I have other more important concerns for Zeus development right now, BFS doesn't really bring any significant performance boost (which is why it is continually rejected from AOSP inclusion).
Click to expand...
Click to collapse
Oh... i didnt know that.. anyway, I don't think he has his github set up. I didnt saw a link to his github on his thread. And isnt BFS aimed for forward looking(like only performing on a task that is given without any concerns) ? I read about it at google docs about it. And i don't really know how to explain it clearly..
Good luck in your development my frirend. And this thread has been moved to General section. Hope you can find it and Nice to have another friend
Sent from my WT19i with Real Xperia r1

This is nice info,
Thanks

Thanks man. This is awesome. Much appreciated

★ ☆ [Kernel] NuK3RN3L | s2w+s2s | 01-21-14 | 1,900MHz | 3.0.84 | Sense/AOSP | ☆ ★

★ ☆ [Kernel] NuK3RN3L | s2w+s2s | 01-21-14 | 1,900MHz | 3.0.84 | Sense/AOSP | ☆ ★
-NuK3RN3L-
OVERCLOCKED
Edition
Now added!
Santod's Mecha ICS Sense/AOSP Kernel
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DOWNLOAD:
NuK3rn3l mecha Final
sweep2wake
sweep2sleep
16 Governors
TCP Controls
Zram/Swap
Linaro
OTG
01-20-14
Use Trickster Mod to enable Wake options
You need an updated version of Busybox from the Play Store to use Trickster Mod.
Once that's installed, open it and run the installer.
Then you can install Trickster Mod, grant it su permissions, and use it to enable s2w+s2s and adjust all other kernel settings and tweaks.
Trickster Mod can be found here.
-NuK3RN3L-
stock frequencies
current build
~ or ~
NuK3RN3L-
Overclocked Edition
1,516MHz Default/Max
current build 6-25-13
+ LagFree
-NuK3RN3L-
Aosp NuK3RN3L, with working wifi on Aosp ICS and Jelly Bean.
Only use this for this one on Aosp roms. (CM9/CM10)
[URL="http://www.androidfilehost.com/?fid=23017610006233856"]NuK3RN3L ICS/JB Aosp OC Edition
[/URL]
These have been well tested, but use at your own risk!
I am not responsible for you or your device or anything that you do to it!
​
Included Governors:
SavagedZen
lulzactive
adaptive
hyper
scary
skywalker
brazilianwax
fantasy
SmartassV2
interactive
conservative
userspace
powersave
lionheart
ondemand
performance
How to install:
Flash zip in Recovery
Wipe cache and Dalvik cache
Reboot
This can be flashed to any current ICS roms!
Sense and AOSP!
NuK3RN3L was initially built for Sense roms, it has been confirmed to be working on Joe Black's latest CM9 build, though it needs a little camera patching...
Looks like we may have an AOSP/Sense ICS Hybrid Kernel.
On Aosp, Data and Netflix do work, camcorder not yet.
Will work on things with Joe to improve this.
Click to expand...
Click to collapse
I will try and update my git repo every 7-90 days until I automate it into my buildbox process...
Compiled using the 4.4.3 gcc toolchain.
Big thanks to my buddy Ziggy for his help and inspiration.
XXPachaXX for his work on msm7x30
Flemmard for his work on msm7x30
Also to HTC for finally releasing the source code...
HTCDEV Source files: my copy
​

FAQ:
Hopefully this answers some common questions.
I will add to this as kernel changes are made.
On UnSenseROM Jelato, there is a script in /system/etc/init.d called 00_vdd_levels if I recall the name exactly.
It's essentially a text file that should be either deleted, or remove the ## from the name of it so it doesn't run at boot.
Then whatever app is used to control governors and clock speeds will not get reset upon rebooting, whether you use the built in CPU Controls or No Frills, etc,..
On my other roms, the same rule applies, if there is a script in /system/etc/init.d with vdd levels in the name, remove it or rename it.
On NuSenseX ROM you should be careful touching anything in init.d, or you could break your wifi connection.
Soon, I intend to have kernels that will be baked into each rom, and there will be no need to concern oneself with any of this, and it's really nothing of much concern anyhow.
But I think that about covers most cases...
____
GOVERNORS
1) Ondemand:
Default governor in almost all stock kernels.
One main goal of the ondemand governor is to switch to max frequency as soon as there is a CPU activity detected to ensure the responsiveness of the system.
Effectively, it uses the CPU busy time as the answer to "how critical is performance right now" question.
So Ondemand jumps to maximum frequency when CPU is busy and decreases the frequency gradually when CPU is less loaded/apporaching idle.
Even though many of us consider this a reliable governor, it falls short on battery saving and performance on default settings.
One potential reason for ondemand governor being not very power efficient is that the governor decide the next target frequency by instant requirement during sampling interval.
The instant requirement can respond quickly to workload change, but it does not usually reflect workloads real CPU usage requirement in a short enough time and it may cause it to frequently change between highest and lowest frequency.
2) Conservative:
A slower Ondemand which scales up slowly to save battery.
The conservative governor is based on the ondemand governor.
It functions like the Ondemand governor by dynamically adjusting frequencies based on processor utilization.
However, the conservative governor increases and decreases CPU speed more gradually.
Simply put, this governor increases the frequency step by step on CPU load and jumps to lowest frequency on CPU idle.
Conservative governor aims to dynamically adjust the CPU frequency to current utilization, without jumping to max frequency.
The sampling_down_factor value acts as a negative multiplier of sampling_rate to reduce the frequency that the scheduler samples the CPU utilization.
For example, if sampling_rate equal to 20,000 and sampling_down_factor is 2, the governor samples the CPU utilization every 40,000 microseconds.
3) Interactive:
(currently my recommended governor for best overall battery and performance)
Can be considered a faster ondemand. So - more snappier, less battery!
Interactive is designed for latency-sensitive, interactive workloads.
Instead of sampling at every interval like ondemand, it determines how to scale up when CPU comes out of idle.
The governor has the following advantages:
1) More consistent ramping, because existing governors do their CPU load sampling in a workqueue context, but interactive governor does this in a timer context, which gives more consistent CPU load sampling.
2) Higher priority for CPU frequency increase, thus giving the remaining tasks the CPU performance benefit, unlike existing governors which schedule ramp-up work to occur after your performance starved tasks have completed.
Interactive - It's an intelligent Ondemand because of stability optimizations. Why??
Sampling the CPU load every X ms (like Ondemand) can lead to under-powering the CPU for X ms, leading to dropped frames, stuttering UI, etc.
Instead of sampling the CPU at a specified rate, the interactive governor will check whether to scale the CPU frequency up soon after coming out of idle.
When the CPU comes out of idle, a timer is configured to fire within 1-2 ticks.
If the CPU is very busy between exiting idle and when the timer fires, then we assume the CPU is underpowered and ramp to max frequency.
4) Userspace:
Instead of automatically determining frequencies, lets user set frequencies.
5) Powersave:
Locks max frequency to min frequency.
Can not be used as a screen-on or even screen-off (if scaling min frequency is too low).
6) Performance:
Sets min frequency to max frequency.
Use this while benchmarking!
7) SmartassV2:
Version 2 of the original smartass governor from Erasmux. Another favorite for many a people.
The governor aim for an "ideal frequency", and ramp up more aggressively towards this freq and less aggressive after.
It uses different ideal frequencies for screen on and screen off, namely awake_ideal_freq and sleep_ideal_freq.
This governor scales down CPU very fast (to hit sleep_ideal_freq soon) while screen is off and scales up rapidly to awake_ideal_freq (500 mhz for GS2 by default) when screen is on.
There's no upper limit for frequency while screen is off (unlike Smartass).
So the entire frequency range is available for the governor to use during screen-on and screen-off state.
The motto of this governor is another option for balance between performance and battery.
8) Lulzactive:
Basically interactive governor with added smartass bits and variable (as opposed to fixed amout) frequency scaling, based on currently occuring cpu loads.
Like smartass, it has a sleep profile built-in.
9) Lagfree:
Lagfree is similar to ondemand. Main difference is it's optimization to become more battery friendly. Frequency is gracefully decreased and increased, unlike ondemand which jumps to 100% too often. Lagfree does not skip any frequency step while scaling up or down. Remember that if there's a requirement for sudden burst of power, lagfree can not satisfy that since it has to raise cpu through each higher frequency step from current. Some users report that video playback using lagfree stutters a little.
____
So, Governors can be categorized into 3/4 on a high level:
1.a) Ondemand Based:
Works on "ramp-up on high load" principle. CPU busy-time is taken into consideration for scaling decisions.
Members: Ondemand, OndemandX, Intellidemand, Lazy, Lagfree.
1.b) Conservative Based:
Members: Conservative, Lionheart, LionheartX
2) Interactive Based:
Works on "make scaling decision when CPU comes out of idle-loop" principle.
Members: Interactive, InteractiveX, Lulzactive, Luzactiveq, Smartass, SmartassV2, Brazilianwax, SavagedZen.
3) Weird Category:
Members: Userspace, Powersave, Performance.
Click to expand...
Click to collapse
___
Changelog:
__
062513
Updated 1,516 OC'd Edition!
Added Governors:
LagFree
Lulzactive
SmartassV2
7 more modules built in
062213
Added 1,516 OC'd Edition!
Adjusted cpu frequency tables
Adjusted voltages
Enabled 1,516 MHz Overclock as Default
062113
Powersave governor added for those of you trying to squeeze more out of the battery, or only using the device on wifi.
062013
Interactive governor added for better response time, keyboard reaction, etc,..
​

Reserved...
​

NuK3RN3L is also now booting with AOSP JellyBean.
Stay Tuned!!!!

santod040 said:
NuK3RN3L is also now booting with AOSP JellyBean.
Stay Tuned!!!!
Click to expand...
Click to collapse
Any chance of a dual boot setup?
Check out the Devil kernel and recovery for the note 2......
Would be nice to have a slimmed down AOSP ROM and a Sense one for when you wanted it.

I'm not trying to be rude to anyone but let's keep the feature requests to a minimum until he gets the more important aspects worked out. There is a lot of testing going on with just what this kernel can do as we speak. I'm sure once things calm down the other features can be implemented.
Sent from my ADR6400L using Tapatalk 2

Says AOSP in the title. Can this be used with the CM9 in this thread?
Sent from my NusenseX Bolt using Tapatalk 2

arizonaomnia said:
Says AOSP in the title. Can this be used with the CM9 in this thread?
Sent from my NusenseX Bolt using Tapatalk 2
Click to expand...
Click to collapse
This can be flashed to any current ICS roms!
Sense and AOSP!
NuK3RN3L was initially built for Sense roms, it has been confirmed to be working on Joe Black's latest CM9 build, though it needs a little camera patching...
Looks like we may have an AOSP/Sense ICS Hybrid Kernel.
On Aosp, Data and Netflix BOTH work, camcorder not yet.
Will work on things with Joe to improve this.

Congrats on RLS brosif these guys are lucky you are still carrying the infected flame for this phone !!!!

santod040 said:
This can be flashed to any current ICS roms!
Sense and AOSP!
NuK3RN3L was initially built for Sense roms, it has been confirmed to be working on Joe Black's latest CM9 build, though it needs a little camera patching...
Looks like we may have an AOSP/Sense ICS Hybrid Kernel.
On Aosp, Data and Netflix BOTH work, camcorder not yet.
Will work on things with Joe to improve this.
Click to expand...
Click to collapse
Anyone know if it fixes the Gmail whiteout? I can live without the camcorder but the Gmail thing was too much.
Sent from my NusenseX Bolt using Tapatalk 2

Virus said:
Congrats on RLS brosif these guys are lucky you are still carrying the infected flame for this phone !!!!
Click to expand...
Click to collapse
Good to see you here @Virus.
I haven't seen you since my EVO days!

i flashed both the stock and oc'd versions of this kernel over joe black's cm9 (which was also clean flashed... even wiped my sd) and wifi isn't working. it flat out won't turn on.
i don't have my tbolt in service anymore, so without wifi, i can't use it at all. wifi worked with the included kernel on joe's cm9 rom.
i'm a little pressed for time at the moment, but if a logcat would be helpful, lemme know and i'll post one when i'm back from vacation at the end of the upcoming week.

namurt said:
i flashed both the stock and oc'd versions of this kernel over joe black's cm9 (which was also clean flashed... even wiped my sd) and wifi isn't working. it flat out won't turn on.
i don't have my tbolt in service anymore, so without wifi, i can't use it at all. wifi worked with the included kernel on joe's cm9 rom.
i'm a little pressed for time at the moment, but if a logcat would be helpful, lemme know and i'll post one when i'm back from vacation at the end of the upcoming week.
Click to expand...
Click to collapse
Yeah that's a known issue with flashing it seperate.
There's a couple things not included in the kernel zip, that have to be changed Rom side.
These changes are easily made and Joe should have an update posted soon with this kernel in it and the needed Rom files to have WiFi working.
Sorry for the inconvenience.
It's just become known it would work as well as it does.
Fixes and improvements to his Rom and this kernel are coming.
If he doesn't have it up soon, I'll post a patch for using this on his Rom.
Sent from my HTC6435LVW using xda app-developers app

sweet jesus, you are one amazing dev!
that was a lightning quick response, hah.
it's so nice to see our bastard child of a device still getting some love.

santod040 said:
NuK3RN3L is also now booting with AOSP JellyBean.
Stay Tuned!!!!
Click to expand...
Click to collapse
You know....if you WANTED to....you know, just for sh1ts and giggles.....you COULD post the version of this without working data, just to give a preview and let people play with it. I remember that Liquid did something similar with an early build of OCS for the Thunderbolt. Or not. Whatever you want to do is fine, of course.
*drooling*
Sent from my NusenseX Bolt using Tapatalk 2

namurt said:
sweet jesus, you are one amazing dev!
that was a lightning quick response, hah.
it's so nice to see our bastard child of a device still getting some love.
Click to expand...
Click to collapse
Yep, santod is the man, no doubt about it.
This device launched more than 2 years ago with froyo, was upgraded to gingerbread, eventually got ICS, and may yet see unofficial jellybean!? That's an amazing run for any phone IMHO.

santod040 said:
NuK3RN3L is also now booting with AOSP JellyBean.
Stay Tuned!!!!
Click to expand...
Click to collapse
where i can find thunderbolt aosp jelly bean ROM...
olredi tried this kernel on Jelato ROM and make ma fone awesomely blasting fast :good:

guinzo said:
where i can find thunderbolt aosp jelly bean ROM...
olredi tried this kernel on Jelato ROM and make ma fone awesomely blasting fast :good:
Click to expand...
Click to collapse
AOSP jellybean hasn't been released yet, they're still working on it.

quickdraw86 said:
Yep, santod is the man, no doubt about it.
This device launched more than 2 years ago with froyo, was upgraded to gingerbread, eventually got ICS, and may yet see unofficial jellybean!? That's an amazing run for any phone IMHO.
Click to expand...
Click to collapse
+1
Santod, Chief Executive Officer
Sent from my ADR6400L using xda app-developers app

Can anyone please test and see if Onavo works with this kernel? Thanks.
https://play.google.com/store/apps/details?id=com.onavo.android.onavoics

My S3 ideal setup: ROM, Kernel, Mods, Apps & Games

In 2015, Galaxy S3 is a quite old device. It was introduced in 2012, with a lot of supporters around the world. I think it is the best smartphone of Samsung ever. And in 2015, it is still a good phone with latest software update from other developers
These are my combinations of roms, kernels, mods and tweaks of my Galaxy S3 (i9300). I think it is the best combination ever, with good performance and experience. Remember that this is my own opinion, so maybe it won't appropriate with somebody. Anyway, let's get start!!!
ROM
Cyanogenmod is undoubtedly the most popular and best-performance rom ever. It is based on Stock Android, so it runs very smooth and has brilliant performance, especially in Benchmark Test. Android 5.0 Lollipop is released, then our S3 has a very good CM12 rom with latest software version. I have used this rom for 4 months, and I do not expect anything more about my phone because it runs PERFECTLY.
Link for Cyanogenmod 12 rom: http://forum.xda-developers.com/galaxy-s3/development/wip-cyanogenmod-12-t2936990
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​ KERNEL
Since Siyah kernel is end-of-development, Boeffla Kernel is a perfect alternative. This kernel brings us a lot of things : change CPU governers, overclock CPU (up to 1600 Mhz) and GPU (640 Mhz), sound tweaks, undervolt CPU and GPU, etc. It lets us to control our devices freely and effectively. It also gives us brilliant battery performance.
Links for Boeffla Kernel i9300: http://forum.xda-developers.com/gal...rnel-boeffla-kernel-2-2-stable-27-03-t2449408
MODS
When I bought my Galaxy S3, I soon realized that is had a poor sound experience. So I looked for a sound mods that it improves my phone speaker. And fortunately, I have found a thread that had an amazing work: ACID Audio Engine. It gives me many positive improvements with i9300 sounds, and I have the best sound experience ever.
Link for ACID Audio Engine mod: http://forum.xda-developers.com/galaxy-s3/development/mod-acid-audio-engine-v5-0-samsung-t2002197
APPS & GAMES
I am a student, so I do not have much working or business apps. These app below are mostly entertaining apps : music, games,…
Google Camera: easy, simple and functional interface
https://play.google.com/store/apps/details?id=com.google.android.GoogleCamera
Inbox by Google: a beautiful Material Design email app, and officially published by Google
https://play.google.com/store/apps/details?id=com.google.android.apps.inbox
Google Keep: easy for taking notes with texts, images and many cute symbols…
https://play.google.com/store/apps/details?id=com.google.android.keep
Zedge: up-to-date beautiful wallpapers, ringtones and other stuffs.
https://play.google.com/store/apps/details?id=net.zedge.android
Wolfram Alpha: as a student, I have to do a lot of calculating exercises. This app is my perfect assistant at school, especially in Maths lessons.
https://play.google.com/store/apps/details?id=com.wolfram.android.alpha
Fenix: my daily Twitter app
https://play.google.com/store/apps/details?id=it.mvilla.android.fenix
Seeder: it is undeniable that many Android devices become slower and slower after long time using them. Seeder helps us to prevent this problem. It gives us a smooth experience with no lags and FC’s.
http://forum.xda-developers.com/showthread.php?t=1987032
Xposed Installer + Gravity Box(LP) : best apps for interface editing, mods, and tweaks
http://forum.xda-developers.com/showthread.php?t=3034811
Ram Manager Pro: a lot of RAM options, swap RAM (up to 2GB), friendly interface.
https://play.google.com/store/apps/details?id=com.smartprojects.RAMOptimizationFree
FIFA 15: Since FIFA 16, in my opinion, is not as good as FIFA 15 (graphics problems, worse user interface,…), I am still playing with my own Ultimate Team. Best Sport app ever.
https://play.google.com/store/apps/details?id=com.ea.game.fifa15_row
Asphalt 8: Racing games with a lot of cars, roads and game modes, brilliant graphics.
https://play.google.com/store/apps/details?id=com.gameloft.android.ANMP.GloftA8HM
Leo’s Fortune: This is the best graphics games ever…
https://play.google.com/store/apps/details?id=com.leosfortune
TWEAKS & SELF-EXPERIENCE
CPU governer: ondemand
I/O Scheduler: deadline
Max freq: 1400 Mhz
Min freg: 200 Mhz
Undervolt CPU: -75mV​
GPU freq: 160/266/350/440/533
GPU undervolt: -75mV​
Build.prop tweaks:
Fast Reboot
persist.sys.purgeable_assets=1
Render UI with GPU
debug.sf.hw=1​
Increasing It Will Make Mobile Smoother
windowsmgr.maxevents_per_sec=150​
Video Acceleration Enabled
video.accelerate.hw=1​
Increase Performance
debug.performance.tuning=1​
Disable Sending Usage Data
ro.config.nocheckin=1​
Deeper Sleep / Better Battery Life
ro.ril.disable.power.collapse=1
pm.sleep_mode=1​
Disable BootAnimation
debug.sf.nobootanimation=1​
Faster Scrolling
ro.max.flingvelocity=12000​ro.min.fling_velocity=8000​

sorry for this,but,either u are not informed on whats going on these days,or just lack of knowledge.
this version you chose as your rom is EOL state,and its much worse than any rom IMO (memory leaks,stagefright not patched etc). the best rom right now is AD latest or B19 from archi as well.
kernel-wise,boeffla is EOL state again,he only update ramdisk,so this is just for campatibility still active.while things starting to end for this phone,archi wow us every single time,and archikernel latest is the most "optimized" for this phone along with his roms...
I/O sheduler-wise, deadline and noop is known to low speeds and performance crippling..best shedulers for our phone are BFQ latest,and CFQ.
ROW is better generally but not for I9300.it sucks.
You should never undervolt processor especially -75!! GPU as well. games will lag.
But this guide is,from my point of view,battery life driven.
but i would not get crazy for battery life anymore because anyways battery is fcked up so many years,especially stock.the only thing u will achieve is at best half an hour screen on time.not worth it for me
as for build prop tweaks,dont even touch it anymore,its not worth it,plus archi have better build prop tweaks and generally well made Roms.
*flies away*

My best setup is Archidroid + ArchiKernel
Cpu voltages table:
1400 1.1375V
1300 1.1V
1200 1.075V
1100 1.025V
1000 0.95V
900 0.925V
800 0.9V
700 0.875V
600 0.85V
500 0.825V
400 0.8V
300 0.8V
200 0.8V
GPU:
700 - 1.175V
600 - 1.0625V
440 - 0.9375V
300 - 0.8375V
150 - 0.7375V
CPU Governor: lulzactiveQ
CPU States: IDLE + LPA + AFTR
eMMC/SD Governor row/cfq
I think, that we can undervolt our SoC much lower, but not by setting same '-xx mV' value for all profiles, i spend about 2 hours for testing voltages on every profile. I descended to 0.8V on CPU, lower values were giving me a lot of freezes and lags. On GPU i set 0.7V (Boeffla kernel) and image went away. My ASV level is 3. I also tried it on other i9300 @ 2LVL ASV, GPU was working with same voltages. But CPU wanted extra 25mV for every profile from my table.
I also saw one more thing, ArchiKernel requies higher voltages, but it's harder to freeze phone (especially GPU) than on Boeffla.
Sorry for my bad english, i'll improve that - i promise

i wish i didnt sold my s3 :/

How to undervolt?
Sent from my Be_Pure using XDA Free mobile app

The Funky Pear said:
sorry for this,but,either u are not informed on whats going on these days,or just lack of knowledge.
this version you chose as your rom is EOL state,and its much worse than any rom IMO (memory leaks,stagefright not patched etc). the best rom right now is AD latest or B19 from archi as well.
kernel-wise,boeffla is EOL state again,he only update ramdisk,so this is just for campatibility still active.while things starting to end for this phone,archi wow us every single time,and archikernel latest is the most "optimized" for this phone along with his roms...
I/O sheduler-wise, deadline and noop is known to low speeds and performance crippling..best shedulers for our phone are BFQ latest,and CFQ.
ROW is better generally but not for I9300.it sucks.
You should never undervolt processor especially -75!! GPU as well. games will lag.
But this guide is,from my point of view,battery life driven.
but i would not get crazy for battery life anymore because anyways battery is fcked up so many years,especially stock.the only thing u will achieve is at best half an hour screen on time.not worth it for me
as for build prop tweaks,dont even touch it anymore,its not worth it,plus archi have better build prop tweaks and generally well made Roms.
*flies away*
Click to expand...
Click to collapse
Hi The Funky Pear!!
Can you post here your complete kernel config on synapse?
Thanks in advance

_nEoN_ said:
Hi The Funky Pear!!
Can you post here your complete kernel config on synapse?
Thanks in advance
Click to expand...
Click to collapse
of course! feel free to ask anything!! will post screenshots because its easier

what is "ad latest" rom?

mkdr said:
what is "ad latest" rom?
Click to expand...
Click to collapse
here u go: http://forum.xda-developers.com/galaxy-s3/development/rom-archidroid-v2-4-6-power-hands-t2354859

[Kernel][Stock & Treble] LH Kernel Official Builds for Vince

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I will not be held responsible for anything that happens to your device after flashing this kernel. If you don't know how to bring your dead device back to life please don't make any modifications and stay with stock MIUI. Also, if you think that overclocking can harm your device, overheat-it and possibly brick-it, send me a message and I'll be happy in informing you that My kernel's are SAFE.​
MODEL INFORMATION​
It seems that there's two different variants of the global model MEG7, one that has a more durable silicon in the chips and one with poor hardware construction, that results in very low capability to overcloking.
let's refer to these "sub-models" as:
MEG7-Endurance
&
MEG7-Static
Static means no change on the clocks, and Endurance for good resistance on higher RPM
If you find any problems with the codec overclocking version like reboots, freezes, or any of similar problems, do not use it, wait for a release of a non overclocked version. This will solve some bigger issues with this kernel.​
My name is Luan, I live in a small city near the capital of my state in Brazil, I'm really young to be developing kernel for this phone, maybe even the most young recognized developer in xda :victory: . I'm 16 years old and I love to compile kernels and reach the limits of the smartphone i'm using (in this case redmi 5 plus). I can also speak both English and Portuguese Brazillian, which is my "default language :laugh: ".​
Kernel info
LH Kernel (aka HexaTurbo) kernel is meant to be simple with only cool features added on top of CAF kernel. Kernel source will always be kept in sync with new caf and mainstream linux (3.18.y) updates. Okay enough of the intro let's move on to the features!​
Telegram LH Kernel discussion group! Come join us!​
*linux version 3.18.116
*GPU overclock support upto 800MHz (NOTE: This overclock is a PURE CLOCK, which means that the frequency displayed is the one the GPU regulator is sending to the chip, on Xprise kernel the frequency was with wrong multipliers, so the 855mhz displayed actually were 755mhz :silly: )
*stereo sound control for headphones
*Custom I/O schedulers: sio and zen
*KCAL advanced color control
*Crc check switch
*FS: F2FS & sdcardfs support
*reduced load average
*Enable sha256/512
*UKSM and KSM enabled
*Vibration control
*Using Xiaomi drivers
*Better audio drivers (Thanks to @LuizPauloDamaceno)
*Optimized
*Arch power option
*Gentle fair sleepers
*Better GPU usage and optimization
*CPU modded to go up to 2208mhz BIG and 2208mhz Little (Again, these are PURE CLOCKS, since our chipset dosn't seem to have a frequency table with multiplier voters, we can't go higher then 2208mhz {2400mhz will have the same performance as 2208mhz, test yourself} )
*Zram
*Zwap
*Frontswap
*Zcache
*ZSmalloc
*Optimized regulators for thermal effiency
*Disabled BCL hotplugging
*Increase BUS Width for better capability
*Crypto bus OC to 160mhz
*Slimbus OC for better audio response
*A bunch of stuff here and there​
-Download the zip file and save it into the root directory of internal/external storage
-Reboot to recovery mode and flash the zip file
-Reboot device​
2018-23-07
Download Kernel​
2018-23-07
Download Kernel TREBLE​
@LuizPauloDamaceno thanks for helping with quality and audio related stuff
@osm0sis for his amazing AnyKernel2 script
@rainforce279 for his awesome features
@mdeejay for making this possible!
@Ashish94 for providing such useful scripts​
XDA:DevDB Information
LH KERNEL OFFICIAL FOR VINCE, Kernel for the Xiaomi Redmi Note 5 / 5 Plus
Contributors
LuanHalaiko, LuizPauloDamaceno, Yousef Algadri and all the other developers I cherry-picked commits
Source Code: https://github.com/LuanHalaiko/msm-3.18
Kernel Special Features: GPU/CPU OC and much more!
Version Information
Status: Alpha
Created 2018-06-20
Last Updated 2018-10-18

Screenshots in the attachment

-----Old Changelog-----
2018-23-07
For both treble and non-treble
-Linux 3.18.116
-Add cooling device property to msm8953 msm gpu
-Add missing CPU code lines for overclocking and features
-Optimize some lines of code
-More Undervolting for the CPU
-Fixed Black YouTube glitch
-Reduce Tasha voltages for less amplifier heat
2018-21-07
-Added a Treble version compatible with Android P
2018-21-07
-GPU Overclock is now more stable (790mhz instead of 800mhz, but still showing 800mhz becouse it's cooler)
-Added USB Fast charging
-Enabled wcd9335 HiFi mode
-Better power delivery for the wcd9335 amplifier
-Kernel Linux 3.18.115
-Cleanup old clock-gcc lines
-Undervolt the CPU
-Reduce all the Inovative overclocks:
*Camera ISP Overcloking from 465mhz to 581mhz
*Video Codec Overclocking from 465mhz to 600mhz
-BIMC DRR Overclocking enabled
-Removed useless HotPlugging
-And many more
2018-22-06
-New GPU steps (800,750,700,600)
-HexagonDSP Overclocking to 375mhz to 500mhz
-Camera ISP Overcloking from 465mhz to 620mhz
-Video Codec Overclocking from 465mhz to 600mhz
-General Fixes and optimizations
DOWNLOADS ARE AT THE MAIN POST

Attention note!
Screenshots and benchmarks are being uploaded!

God is here to help us...!!

Hi Luan. Thanks for the kernel. Just flashed and noticed one thing while using CPU Hotplug. I used AiO and when i choose 1 big core to be online, only one little core stays online and vice versa. Big and little cores has been swapped i guess. Just letting you know. Please look at the screenshots for info.

kaleavi said:
Hi Luan. Thanks for the kernel. Just flashed and noticed one thing while using CPU Hotplug. I used AiO and when i choose 1 big core to be online, only one little core stays online and vice versa. Big and little cores has been swapped i guess. Just letting you know. Please look at the screenshots for info.
Click to expand...
Click to collapse
Oh yeah, forgot to change that, it will be in the next build! Also Screenshots uploaded!

what is cpu aio hotplug?

F2fs support? So i can change the partition to f2fs?

Hi Luan, thanks for this kernel. I like it but if i set gpu freq to 800Mhz my game wont open, but if i set to 560Mhz my game can be played again and i didn't see 650Mhz on gpu freq.
Sorry for my bad english.

nurhadina said:
Hi Luan, thanks for this kernel. I like it but if i set gpu freq to 800Mhz my game wont open, but if i set to 560Mhz my game can be played again and i didn't see 650Mhz on gpu freq.
Sorry for my bad english.
Click to expand...
Click to collapse
Ur device got some problem then lol.
U said same to xprise but different way
Sent from my Redmi 5 Plus using Tapatalk

ekowanz said:
F2fs support? So i can change the partition to f2fs?
Click to expand...
Click to collapse
Only if the rom and recovery supports it

Yousef Algadri said:
Ur device got some problem then lol.
U said same to xprise but different way
Click to expand...
Click to collapse
Nah i just tried it and got same problem and i hope i got 650 freq back so i can run my games again. Because i didn't fint 650Mhz at gpu option on this kernel.

Yousef Algadri said:
Ur device got some problem then lol.
U said same to xprise but different way
Click to expand...
Click to collapse
Yeah, his device don't like overclocking

nurhadina said:
Nah i just tried it and got same problem and i hope i got 650 freq back so i can run my games again. Because i didn't fint 650Mhz at gpu option on this kernel.
Click to expand...
Click to collapse
800mhz is overlapping 650mhz in this version, it will be fixed in the next ones

LuanHalaiko said:
800mhz is overlapping 650mhz in this version, it will be fixed in the next ones
Click to expand...
Click to collapse
And i forgot to tell you, when i use this kernel my phone said my sd card was corrupt but when i go to recovery my sd card was fine and it was fine too on xprise kernel.

nurhadina said:
Hi Luan, thanks for this kernel. I like it but if i set gpu freq to 800Mhz my game wont open, but if i set to 560Mhz my game can be played again and i didn't see 650Mhz on gpu freq.
Sorry for my bad english.
Click to expand...
Click to collapse
Confirm too. When i set gpu to 800mhz game is crash, 560mhz work fine,hope you add 650mh again

does anyone know why my phone doesn't cross 1689mhz?

thinhx2 said:
Confirm too. When i set gpu to 800mhz game is crash, 560mhz work fine,hope you add 650mh again
Click to expand...
Click to collapse
Your device doesn't like to do Overclocking.
There are many devices has the same issues. And many doesn't. It depends on luck when getting device with fully OC support xD
Sent from my Redmi 5 Plus using Tapatalk

Can i use it on MIUI 9 Nougat?

ROCKSTAR KERNEL FOR Redmi 4x (Pie, Oreo, Nougat)

DISCLAIMER :
I will not be held responsible for anything that happens to your device after flashing this kernel. If you don’t know how to restore soft-bricked devices then I would recommend that you keep using MIUI. Also, one thing, overclocking is completely safe and doesn’t cause any damage to the mobile phone
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Click to collapse
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I am a new kernel developer, maybe the youngest one around here, 15years old. I like to combine all the best features available for my device in a single kernel, that is, battery and overclocks(speed)
In this kernel I have tried to give my best to extract the best out of our beloved santoni, and that too making it compatible for all the devices. Now enough things, let’s move on to the features of the kernel :laugh:
⚡️Added dt2w and s2w
⚡️ QNOVO CHARGING
⚡️****ING CHARGE MOD(no qc mods required), increased charging current to 2400ma and higher
Voltage Control
Intelli Thermal 3.1
⚡️ CPU Undervolts
Compiled with Linaro
IO schedulers:
FIOPS
Noop
Deadline
CFQ
BFQ
ZEN
Tons of under the hood features and goodies
Back light dimmer
Undervolted Ram
Governors:
Impulse
Dance Dance
Lionfish
Cultivation
Lionheart
Alucard
Lionfish
Darkness
Nightmare
ElementalX
Interactive
Conservative
Powersave
OnDemand
UserSpace
Performance
GPU 600mhz (REAL OVERCLOCKS) and 160mhz (REAL UNDERCLOCKS)
Simple GPU algorithm
Adreno idler
Improvments smoothness
Framebuffer console optimized for upto
70℅ (better performance)
Ultra smooth
Improvements in battery backup
Improvements in CPU freq throttling
Tons of under the hood improvements
1.57ghz and 1.2ghz CPU over clocks
Camera overclocks
The time to enter deepsleep has been
reduced 10 times
INSTALLATION​
-Just download the zip and flash it through your recovery!!!
DOWNLOADS​
V2. 0 Released!!!
Code:
[B]The kernel sources have been changed!!! A new rebased build is here with most of the earlier features!!! [/B]
💥1.6ghz Big CPU OC
💥1.3ghz Little CPU OC
💥UKSM 0.1.2.4
💥KSM
💥Supports upto 3A charging! Adapted to get out the best from the stock charger!!! 2A!🤘🏻🤘🏻
💥ANTUTU SCORES UPTO 67K!
💥Blu_active and Intelliactive governers!
💥Increased maximum read ahead! (More performance! 🎉🎉)
💥Overclocked audio processor to 12.28mhz
💥Undervolted RAM
💥Overclocked headset to 4.8 from 2.4
💥Overclocked crypto bus to 160mhz
💥Increased GPU processing rates to 600 from 350!
💥Added NVS hibernate governer!
💥Added touch boost!
ELSE you can explore! [B]JUST ONE THING, DON'T USE ANY HOTPLUG FOR BEST GAMING AND BEST BB, else is your own choice, as hotplug have been known to affect performance as well as deep sleep due to the addition of CORE CONTROL[/B]
Code:
[COLOR="red"] ROCKSTAR V3. 0 RELEASE!!! [/COLOR]
[B]
BASS REDEFINED
💥1000hz kernel clock
💥Doubled bus width (Double data transfer speeds)
💥Stable 1.3ghz for everybody
💥Frandom (Awesome memory speeds)
💥Super fast fp
💥Raw_smp processor
💥Slimbus OC (Better audio)
💥Major Under the hood improvements (Kept secret)
💥RAM overclocks upto 1.5ghz
💥CPU overclocked to 1.65ghz
💥GPU freq altered (Pubg force close at 600mhz? Use 575mhz)
ANTUTU SCORES ARE NOW UPTO 69,000!!!![/B]
Code:
[COLOR="red"] ROCKSTAR V4. 0 RELEASE!!! [/COLOR]
[B] PERFORMANCE FANATIC [/B]
Rockstar version 4.0 is here, feel the best performance that you can get out of your santoni, the best of all Rockstar versions till date, the beast is up here with tons of goodies!!!!!
[B] I/O schedulers : [/B]
💥Sio plus
💥Trip N driod
💥 And many more!!!
[B] Governors added : [/B]
💥Interactive Pro
💥Zzmove
💥Darkness
💥Iron active
💥And many more!!!
💥LITTLE CPU OVERCLOCKED TO 1.34GHZ( I have tried to include as many devices to support this frequency, but 1-2 devices out of 100 can't support this frequency at extremely high loads, or need 4-5 days time to adapt, so use 1.296ghz if u r lazy😉😉)
💥GPU OVERCLOCKED TO 620MHZ
💥Optimized the workload for cpu and gpu
💥DOUBLED THE GPU DATA INPUT AND PROCESSING RATES!!
💥OVERVOLTED SPEAKERS!!! MOTHER OF ALL SOUND MODS!!!
💥TONS OF UNDER THE HOOD IMPROVEMENTS!!!
💥Last but not the least, upstreamed!
Note : Use ex kernel manager to tweak GPU frequency, kernel Adiutor won't work due to some unknown issues
ENJOY!!
Code:
[COLOR="red"] [B] ROCKSTAR V5 LAUNCH!!! [/B] [/COLOR]
[B] THE BEAST IS HERE😈😈, WITH THE HIGHEST PERFORMANCE OF ALL TIMES, HIGHEST OVERCLOCKS, MORE THAN ANY OTHER KERNEL, SUPER SMOOTH, IT IS SET TO ROCKS OUR DEVICES😈😈 [/B]
[B] 💥Introducing Little Core overclocks to 1.36ghz[/B]
💥Clang 8 compilation!!!
💥Cross Compiler is gcc 8!!!
💥New IO schedulers like ROW, MAPLE and others
💥Z3FOLD compressor
💥LMK
💥Upstreamed to v3.18.133
💥Voltage control
💥Dt2w
💥New CPU governers like nightmare, alucard, darkness etc
💥Using Oneplus fingerprint hack, extremely fast fp speeds
💥Rebased source
💥Many other under the hood technical changes
💥 Screen overclocks to 65hz
Code:
[COLOR="red"] [B] ROCKSTAR V5 MAINTENANCE BUILD!!! [/B] [/COLOR]
This build fixes various bugs present in v5 and offers latest upstream to v3.18.134
There are 2 battery builds for both Treble and Non-Treble which are compiled with GCC 8 and provide better battery backup but much less performance, ur choice!!!!
Code:
[COLOR="red"] ROCKSTAR V6. 0 RELEASE!!! [/COLOR]
[B]
The GOD MODE is finally here, to give you unmatched performance and unprecedented battery backup!!!
[/B]
💥 Builds compiled with Dragon TC 9.0 and GCC 8
💥Overclocked little cores to 1.38ghz
💥Overclocked GPU to real 615mhz (earlier 620mhz was being read by the system as 600mhz,so if u notice any kernel giving 650mhz GPU, it's a fake)
💥Added KLAPSE (No issues if a ROM has dead night light, klapse will do the job)
💥Added MSM HOTPLUG
💥Removed the forced online big cores, now u can switch them off as well!!!
💥Added our beloved Adreno idler
💥Added simple GPU algorithm
💥Added dt2w (yep, it works now!!!)
💥 New TCP algorithms :
~Westwood
~Highspeed
~Hybla
~Htcp
~Vegas
~Veno
~Scalable
~Illinois
~Yeah
~Ip
And more!!!
💥 More tunables
💥Added DTS EAGLE AUDIO
💥 Blu_active is back!
💥 Added electron governer
💥Upstreamed to 3.18.138
💥 Unified treble and non treble builds! Also added fix for tingyi chen's encrypted ROMs fix in the kernel itself!
Use DTC OC FOR ULTIMATE PERFORMANCE
Use GCC OC FOR LOWER PERFORMANCE AND BETTER BATTERY LIFE
Use DTC NON-OC FOR PERFORMANCE WITHOUT OC AND AWESOME BATTERY LIFE
Use GCC NON-OC FOR LEGENDARY BATTERY LIFE
Code:
[COLOR="red"] ROCKSTAR V6. 0. MIUI RELEASE!!! [/COLOR]
[B]
Rockstar v6 MIUI LAUNCH!!!!!🤟🏻🤟🏻🤟🏻🤟🏻🤟🏻🤟🏻
THE best performance and battery kernel for MIUI is here!!! Compiled with linaro!!! Don't forget to flash lazyflasher!!!😎😎😎🥳🥳🥳🥳[/B]
Code:
[COLOR="red"] ROCKSTAR V7.0 RELEASE!!! [/COLOR]
[B] ROCKSTAR V7 LAUNCH!!! 😈😈😈[/B]
Well, it has been a long time, but we ain't dead yet!!! And here I bring you, the best of all Rockstar versions till now: v7
There are tons of features :
💥 Merged CAF TAGS and upstreams
💥Reduced CPU frequencies which were problematic
💥Disable useless drivers
💥And many more performance improvements and optimizations
💥Compiled with the latest toolchains
💥[B]A separate version for gamers, flash and PUBG[/B]
💥A separate version for battery lovers
And loads of other technical stuff that many may not understand
The cleanest and the best is here at last😈😈😈
Unified means works on both Treble and non treble, all zips presented here in v7 support both Treble and non treble
NOTE: IF ANYONE IS FACING SMALL DOTS OR GLITCHES ON THEIR SCREEN ON THE ANY VERSION, THEN IT'S DUE TO THE ULTRA HIGH GPU OC, BECAUSE SOME SANTONIs ARE MADE GOOD, WHILE OTHERS AREN'T. SO PLEASE LOWER THE GPU FREQ TO 575MHZ (THIS ALSO FIXES PUBG). IF SOME OF U ARE FACING RANDOM REBOOTS IN OC VERSION , THEN PLEASE LOWER LITTLE CORE CLOCKS TO 1.34GHZ,BECAUSE OF THE POOR SANTONIs YOU HAVE UNLUCKILY GOT.
For gaming use these settings :-
Performance governer on both CPU and gpu(manually select highest frequency)
Disable all hotplugs
Disable uksm
Use deadline io
Set read ahead to 2048 both or external as 1024
Disable all thermal
Disable crc
Disable fsync
Disable adreno idler
Links:- https://drive.google.com/folderview?id=1RgIZI4ypMNVdz1fRmdN-ZQ56UQM0FVsV
@dencel sir, infinite plus, V.V.R sir, Luis Paulo Damaceno and Luan halaiko for their commits
And LuanHalaiko for giving me the idea for the template for xda :laugh::laugh:
Source links :https://github.com/Dhruvgera/RockstarKernel_r4x.git
The one below is dead, this is the latest one
Like my work? Just hit the thanks button
XDA:DevDB Information
Rockstar Resurrected Kernel , Kernel for the Xiaomi Redmi 4X
Contributors
Dhruvgera, Dhruvgera, Infinity.plus, rainforce279
Source Code: https://github.com/Dhruvgera/RockstarKernel.git
Kernel Special Features: CPU and GPU overclocks and underclocks, Tons of governers, Ultra smooth
Version Information
Status: Stable
Current Stable Version: V2.0
Stable Release Date: 2018-10-24
Created 2018-10-24
Last Updated 2018-11-18

awesome bro :good:

I'll try, u crate so much post

thanksss

why i only get under 500mA while charging?

if QC 3.0 works, will be great.
waiting for non treble file...

How about deep sleep ?

Where to download v 1.1??

Unbelievable

husnarizqi said:
why i only get under 500mA while charging?
Click to expand...
Click to collapse
90-100 phone charges in low current

Shotg1 said:
Where to download v 1.1??
Click to expand...
Click to collapse
See link under changelog or:
https://transfer.sh/V7k9J/Rockstar-Santoni-20181025-1943.zip

great bro keep going.. using ur kernel since few days.. one word awesome ?

non treble v1.1 charging at 5V 400ma-800ma, using stock charger & QC 3.0 both. Measured with USB voltmeter direct.

Cryslin111 said:
non treble v1.1 charging at 5V 400ma-800ma, using stock charger & QC 3.0 both. Measured with USB voltmeter direct.
Click to expand...
Click to collapse
Sir, some roms have extremely low thermal configs, my kernel has been supporting 2400mA for various phones which has been confirmed by various people, I recommend using parthav's mod for this purpose :laugh:

Rockstar must try

Lemmy554 said:
See link under changelog or:
https://transfer.sh/V7k9J/Rockstar-Santoni-20181025-1943.zip
Click to expand...
Click to collapse
Is this for treble ? When i try to flash this to los 16 by swapnil it stays in bootlogo

Shotg1 said:
Is this for treble ? When i try to flash this to los 16 by swapnil it stays in bootlogo
Click to expand...
Click to collapse
Here are the non treble and treble files:
Treble link: https://transfer.sh/2uBLg/Rockstar-Santoni-20181025-1928.zip
Non-Treble /Nougat link: https://transfer.sh/V7k9J/Rockstar-Santoni-20181025-1943.zip
You´ll find it in main post too

did it recomended to turn on usb fast charge via kernel adiutor or not?
and,
please add Westwood tcp algorithm on next build.
thankyou..

Dhruvgera said:
I am a new kernel developer, maybe the youngest one around here, 15years old. I like to combine all the best features available for my device in a single kernel, that is, battery and overclocks(speed)
Created 2018-10-24
Last Updated 2018-10-24
Click to expand...
Click to collapse
thanks for source,
I will built the oc 3,8ghz night-core kernel for santoni from this source

I'vew tried to use on Resurrection remix 6.2.0 [Treble] and after flash i get decription error... after format the data partition get the same error