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read about his kernerls and how they work and can help battery life, but i saw his post and got all confused on how there were all these different versions of it..
can anyone please simplify this down for me??
http://forum.xda-developers.com/showthread.php?t=719763
like what does SBC, BFS, CFS, and undervolting mean?
sorry for the noob question, just wanted experienced help.
read this thread..it should answer all of your questions regarding kernels.
http://forum.xda-developers.com/showthread.php?t=894880
+1 was about to send him the exact same link.
weaselp1 said:
read this thread..it should answer all of your questions regarding kernels.
http://forum.xda-developers.com/showthread.php?t=894880
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haha yeah man. Im glad the link is helping people out, but funny thing is that our moderator here, toast, wont asnwer my PM's to get it stickied. It would help pretty much most if not all noobs. Hell maybe even some old heads...
thanks a lot.. that link really broke everything down to what i needed to know.
i agree too..
deff a sticky
xtrubambinoxpr said:
read about his kernerls and how they work and can help battery life, but i saw his post and got all confused on how there were all these different versions of it..
can anyone please simplify this down for me??
http://forum.xda-developers.com/showthread.php?t=719763
like what does SBC, BFS, CFS, and undervolting mean?
sorry for the noob question, just wanted experienced help.
Click to expand...
Click to collapse
First of all I personally don't use his kernels because they cause screen tearing for me. It sucks because I hear such great things about them.
SBC - superior battery charging, trickle charges your battery
BFS - Brain F*** Scheduler, supposedly provides better performance, only provides me terrible battery drain
CFS - completely fair scheduler
undervolting - saves battery by giving the cpu less voltage
HAVS - hybrid adaptive voltage scaling, dynamic undervolting based on the cpu load
Buff McBigstuff said:
First of all I personally don't use his kernels because they cause screen tearing for me. It sucks because I hear such great things about them.
SBC - superior battery charging, trickle charges your battery
BFS - Brain F*** Scheduler, supposedly provides better performance, only provides me terrible battery drain
CFS - completely fair scheduler
undervolting - saves battery by giving the cpu less voltage
HAVS - hybrid adaptive voltage scaling, dynamic undervolting based on the cpu load
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Click to collapse
Dont ignore that link posted bro. Im not bragging but it has alot in there. Also which kernels did you try?
well im about to flash myns and some kernels and some tweaking for my phone to see whats the setting i will like best..
ill let everyone know soon if the kernels are as they say..
i heard/read about it in my SGS2's time... It was implemented by Gokhan in his kernel but later stripped out because of some problems. PegasusQ is said to be made to handle Quad-core like our One-X, and SGSIII is said to be using this governor by default... Will we be able to see this governor in future Kernel build? or its not compatible technically with Tegra-3 since its a 4+1 setup? Can someone with the knowing enlighten us?
it seems that no one is interested with this
The latest Siyah kernel for SGS2 actually uses pegasusq by default.
jaytana said:
it seems that no one is interested with this
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Murag wala gyud intresado.which is better for sgsII in terms of battery life?this governor or the hotplug?
I'm afraid I can't help with this, sorry, I do have a Question however.
I've seen people talking about Governors etc, is that something to do with the Chips in the Tegra 3?
The-Last-Hylian said:
I'm afraid I can't help with this, sorry, I do have a Question however.
I've seen people talking about Governors etc, is that something to do with the Chips in the Tegra 3?
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Click to collapse
A governor changes when the CPU changes frequency. More time spent at lower frequencies will, of course, mean better battery life - but lower performance. The trick is to find one you like.
Read this: http://forum.xda-developers.com/showthread.php?t=1369817
It is missing a few governors I've seen (such as PegasusQ) but is fairly complete.
Check this post Pegasusq Governor
Hi guys,
I was looking on Nexus forums and i've found many interesting threads thta can be useful for every android device. Here we go:
Battery Drain Benchmarks
http://forum.xda-developers.com/showthread.php?t=1478406
CPU governors and i/o schedulers
http://forum.xda-developers.com/showthread.php?t=1478418
Battery Saving Governor Benchmarks
http://forum.xda-developers.com/showthread.php?t=1507204
All credits to xda member bedalus
if my rom doesn't include a governor (i'm using cm9 and there is no smart Smartass governor in there), can i install it? if it's possible then how i can do it?
terifish said:
if my rom doesn't include a governor (i'm using cm9 and there is no smart Smartass governor in there), can i install it? if it's possible then how i can do it?
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Click to collapse
As far as I know, The only way to try other governor is to create a custom kernel, because the governor code is built inside the kernel code.
Hmmm... I was wondering about OnDemandX, but unfortunately the linked threads don't seem to be aware of it...
_____ W + Bionic Cow 2 + xda app _____
I think this is now the only major deficiency in our device, having different kernels, governors and schedulers. I have a friend with GS2(AT&T) and he uses Pegasus governor with deadline scheduler on Siya Kernel, absolutely unbelievable battery life!! Just an appeal to our great devs out there, we could use a bit if that
Sent From My Wonder on CyanogenMod 9
2g11 said:
I think this is now the only major deficiency in our device, having different kernels, governors and schedulers. I have a friend with GS2(AT&T) and he uses Pegasus governor with deadline scheduler on Siya Kernel, absolutely unbelievable battery life!! Just an appeal to our great devs out there, we could use a bit if that
Sent From My Wonder on CyanogenMod 9
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Click to collapse
sgs2 is flagship phone, it was sold in millions, so millions of users -> lots of devs -> lots of nice things.. our phone is not so popular, that's the thing..
pepoluan said:
Hmmm... I was wondering about OnDemandX, but unfortunately the linked threads don't seem to be aware of it...
_____ W + Bionic Cow 2 + xda app _____
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Click to collapse
Yeah, didnt notice that. I think its the only one of the popular governor thats missing.
2g11 said:
I think this is now the only major deficiency in our device, having different kernels, governors and schedulers. I have a friend with GS2(AT&T) and he uses Pegasus governor with deadline scheduler on Siya Kernel, absolutely unbelievable battery life!! Just an appeal to our great devs out there, we could use a bit if that
Sent From My Wonder on CyanogenMod 9
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Click to collapse
Its just a matter of time. User dimaka1256 is getting his hands on making a good kernel for us. Make him a suggestion on his thread http://forum.xda-developers.com/showthread.php?t=1841827
Hey all, I am running KT747 Kernel on Liquid Smooth ROM. I just have a few questions about kernels and tweaking them (and yes I do know about THIS thread, but it is very cluttered)...
1. What is over-clocking/under-clocking and what does it do? Also, how do I do it?
2. What is Governor and I/O scheduler and what do they do? Also what are the differences betwteen all of the Governors and I/O Schedulers?
3. How do I tweak my kernel to get a really good benchmark score?
4. What are the voltages?
If you can answer any of these questions I'd greatly appreciate it. Thanks to all!
Joe0113 said:
Hey all, I am running KT747 Kernel on Liquid Smooth ROM. I just have a few questions about kernels and tweaking them (and yes I do know about THIS thread, but it is very cluttered)...
1. What is over-clocking/under-clocking and what does it do? Also, how do I do it?
2. What is Governor and I/O scheduler and what do they do? Also what are the differences betwteen all of the Governors and I/O Schedulers?
3. How do I tweak my kernel to get a really good benchmark score?
4. What are the voltages?
If you can answer any of these questions I'd greatly appreciate it. Thanks to all!
Click to expand...
Click to collapse
If you read the OP of the Team Kernelizer's thread it'll answer most of the questions.
1. over-clocking/under-clocking refers to adjusting the speeds which your processor is allowed perform at. Over-clocking means that you can set it as a higher speed and under clocking is that you can set it at a lower speed.
2. There are many different threads on what each of the govenors and schedulers do. In the OP of ktoonsez's kernel thread there are links which give pretty good explainations as to what each of them do.
3. Tweaking your kernel is going to be something that is pretty much dependent on your phone and finding the proper pairing for your phone of frequencies, govenor, and voltages for each individual frequency step.
4. The voltage settings are how much power the processor is allowed to pull while it's at each individual frequency step. These can be changed to optimize performance as well as increase battery life. undervolting too much though could result in issues with your phone.
All of this is very much trial and error.
In order to change any of the kernel settings, use the ktweaker app that was installed on your phone when you installed the Ktoonsez kernel. The app should be in your app drawer.
tkepk181 said:
If you read the OP of the Team Kernelizer's thread it'll answer most of the questions.
1. over-clocking/under-clocking refers to adjusting the speeds which your processor is allowed perform at. Over-clocking means that you can set it as a higher speed and under clocking is that you can set it at a lower speed.
2. There are many different threads on what each of the govenors and schedulers do. In the OP of ktoonsez's kernel thread there are links which give pretty good explainations as to what each of them do.
3. Tweaking your kernel is going to be something that is pretty much dependent on your phone and finding the proper pairing for your phone of frequencies, govenor, and voltages for each individual frequency step.
4. The voltage settings are how much power the processor is allowed to pull while it's at each individual frequency step. These can be changed to optimize performance as well as increase battery life. undervolting too much though could result in issues with your phone.
All of this is very much trial and error.
In order to change any of the kernel settings, use the ktweaker app that was installed on your phone when you installed the Ktoonsez kernel. The app should be in your app drawer.
Click to expand...
Click to collapse
Thank you! I already know about the Ktweaker app as I've used it already because I followed the steps in the thread and tweaked my kernel already for the "good battery+performance" setting. Although not gonna lie, I did not know what I was tweaking lol. I do notice amazing battery life though... after those tweaks I got 60hrs with 3 1/2 hrs of on screen time (4200mAh extended battery). I just wanted to clarify what I was doing. Plus I always hear about over-clocking/under-clocking but I don't know what it is or how to do it.
Joe0113 said:
Thank you! I already know about the Ktweaker app as I've used it already because I followed the steps in the thread and tweaked my kernel already for the "good battery+performance" setting. Although not gonna lie, I did not know what I was tweaking lol. I do notice amazing battery life though... after those tweaks I got 60hrs with 3 1/2 hrs of on screen time (4200mAh extended battery). I just wanted to clarify what I was doing. Plus I always hear about over-clocking/under-clocking but I don't know what it is or how to do it.
Click to expand...
Click to collapse
Over/under clocking and under volting are explained/described pretty well in the OP of the team kernelizer's thread. That being said that sounds like some pretty great battery life.
tkepk181 said:
Over/under clocking and under volting are explained/described pretty well in the OP of the team kernelizer's thread. That being said that sounds like some pretty great battery life.
Click to expand...
Click to collapse
Ever since I did those tweks I've been averaging 2 Days 12 hrs (60hrs total) per charge.... freakn awesome!
Thanks for the info, answered my question as well =p
Sent from my SPH-L710 using xda app-developers app
Theres a ton of good links in the following thread too
http://forum.xda-developers.com/showthread.php?t=1941195
As for CPU governors and stuff, you want the "setcpu guide on how to use" and "android governors explained" links
Hi guys,
I have been testing many different ROMs and kernels so far and still haven't found a kernel which really permits underclocking below 1113 Mhz (for big cores) and 633 Mhz (for little cores).
Do you know any kernel which allows setting cores for a minimum of 300 Mhz for instance?
Many thanks.
Patoilo said:
Hi guys,
I have been testing many different ROMs and kernels so far and still haven't found a kernel which really permits underclocking below 1113 Mhz (for big cores) and 633 Mhz (for little cores).
Do you know any kernel which allows setting cores for a minimum of 300 Mhz for instance?
Many thanks.
Click to expand...
Click to collapse
Maybe Agni kernel do this.
IceCold Kernel up until (including) R3.5 has this feature. The feature was then removed without reason by the developer, but you can still download R3.5.
I'm using (and underclocking) it with Havoc OS 2.5 and it works great.
JosephusQuint said:
IceCold Kernel up until (including) R3.5 has this feature. The feature was then removed without reason by the developer, but you can still download R3.5.
I'm using (and underclocking) it with Havoc OS 2.5 and it works great.
Click to expand...
Click to collapse
Thanks a lot for the tip. I will flash it to test.
Any experience of those builds till 3.5 working with MIUI-based ROMs?
Patoilo said:
Thanks a lot for the tip. I will flash it to test.
Any experience of those builds till 3.5 working with MIUI-based ROMs?
Click to expand...
Click to collapse
I have never used it for MIUI-based-ROMs, so I can't speak on that.
JosephusQuint said:
I have never used it for MIUI-based-ROMs, so I can't speak on that.
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Click to collapse
I will see how it goes and will post the results here.
But I am also interested in testing the Havoc ROM. I actually did it before but got poor battery results. Do you have an idea of your screen-on-time with the combo Havoc + IceCold 3.5?
Patoilo said:
I will see how it goes and will post the results here.
But I am also interested in testing the Havoc ROM. I actually did it before but got poor battery results. Do you have an idea of your screen-on-time with the combo Havoc + IceCold 3.5?
Click to expand...
Click to collapse
I will make a screenshot tomorrow evening of the battery life, and put it in the thread. (It's bedtime here)
JosephusQuint said:
I will make a screenshot tomorrow evening of the battery life, and put it in the thread. (It's bedtime here)
Click to expand...
Click to collapse
Thank you in the meanwhile, I clean flashed IceCold 3.5 Pie and minimum big cpu still stays at 1113 MHz
No option to set 300 MHz
JosephusQuint said:
IceCold Kernel up until (including) R3.5 has this feature. The feature was then removed without reason by the developer, but you can still download R3.5.
I'm using (and underclocking) it with Havoc OS 2.5 and it works great.
Click to expand...
Click to collapse
are you sure he removed it without given a reason.?? it was removed caused those frequencies was useless.
raptorddd said:
are you sure he removed it without given a reason.?? it was removed caused those frequencies was useless.
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Click to collapse
He removed it, because he thought them useless. What is useful and what isn't, is of course subjective, and I for one disagree with his view. He decided it wasn't worth keeping in; however, the feature was working and not "useless" in the sense that it was incomplete.
Regardless, this is not a discussion for this thread; you may ask him directly in his.
The underclocking frequencies were removed due to the Pie firmware disabling the ability to underclock below 1113MHz.
IceCold R3.5 + Oreo FW should still work.
JosephusQuint said:
He removed it, because he thought them useless. What is useful and what isn't, is of course subjective, and I for one disagree with his view. He decided it wasn't worth keeping in; however, the feature was working and not "useless" in the sense that it was incomplete.
Regardless, this is not a discussion for this thread; you may ask him directly in his.
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Click to collapse
bcoz its not useful at all. its all inefficient frequency and he is right. we all tested that alot and found it to be as good as previous undercocked 300mhz freq. just test and see instead of saying this.
people dont even try and complain
JosephusQuint said:
I will make a screenshot tomorrow evening of the battery life, and put it in the thread. (It's bedtime here)
Click to expand...
Click to collapse
There you go. It took a bit longer because I normally have 2 SIM-Cards active (but that uses up more battery). So the pictures are from only 1 SIM card active and mobile data always on.
jokerpappu said:
bcoz its not useful at all. its all inefficient frequency and he is right. we all tested that alot and found it to be as good as previous undercocked 300mhz freq. just test and see instead of saying this.
people dont even try and complain
Click to expand...
Click to collapse
You know what people also do? Assuming without evidence what other people did/thought, instead of asking them.
I did test and compare, and I do have a measurably better battery life than with later versions of the Kernel. I also didn't complain, I stated how it is.
Grow a thicker skin; people like you are not helpful. Not worshipping every move of a developer doesn't mean not being grateful.
I maintain that underclocking is an important feature to have, others may disagree. Some people want NFC and Wireless Charging, I could not care less.
It boggles my mind, that on XDA of all places you regularly find people that tell you what you do or don't need.
JosephusQuint said:
You know what people also do? Assuming without evidence what other people did/thought, instead of asking them.
I did test and compare, and I do have a measurably better battery life than with later versions of the Kernel. I also didn't complain, I stated how it is.
Grow a thicker skin; people like you are not helpful. Not worshipping every move of a developer doesn't mean not being grateful.
I maintain that underclocking is an important feature to have, others may disagree. Some people want NFC and Wireless Charging, I could not care less.
It boggles my mind, that on XDA of all places you regularly find people that tell you what you do or don't need.
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Click to collapse
latest test builds have better bb than older underclocked builds.
if u have had enougj acting like a idiot better use it and see the magic instead of bullshiting here. come 8n tg group and see thick head