Hey guys, I'm just wondering which kernel gets better battery life in CM7. I wanna try SavagedZen but I'm hesitant about the SBC. I know there are non-SBC versions though. How do those stack up?
Also, I'm using the new Destroyer ROM by Magnus, is his stock kernel any good?
Sent from my PC36100 using XDA App
Well i think his kernel is the stock CM kernel, I personally use the Tiamat kernel and get nice battery life.
Thanks I've heard a lot of good things about SavagesZen, so I may try that. I'm still not sure if they were referring to the SBC version or not.
Sent from my PC36100 using XDA App
I use savagedzen cfs sbc. I love it. My phone does not agree with bfs kernels.
I get good performance and battery life
swyped from my cyanogenized and gingerbreaded EVO
gmap516 said:
Thanks I've heard a lot of good things about SavagesZen, so I may try that. I'm still not sure if they were referring to the SBC version or not.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Most likely the sbc version cuz that's all they talk about now. Though when I used the kernel I had great battery life on the non-sbc with cfs and bfs versions.
What are bfs and cfs and what's the difference between the two?
I would try the SBC kernel but I'm using a third-party insurance plan, not sprint's thing, so I'm afraid to ruin the phone using SBC kernels.
Sent from my PC36100 using XDA App
Update: OK, so I'm using savagedzen non-SBC CFS and so far my battery life seems great. does battery life vary greatly from one ROM to another if they're using the same kernel?
Sent from my PC36100 using XDA App
well atm i am running an evo 4g with cm7 and i just switched my kernel to savaged zen and it's running great. my phone was rebooting on its own w/ the regular cm7 kernel i think its b/c i was using setcpu and people are saying it messes up cm7.
i was also wondering if anyone knew if i can use setcpu with cm7 and savaged as the kernel or if it's possible to make profiles on the cpu settings on cm7 i saw some1 post somewhere that you can but they never explained how.
Congrats on joining the kernel-flashing world, hope it treats you well.
I run CM7, and have found that SavagedZen tends to be faster than Tiamats... it just depends on your personal opinion, experiment as much as you want (just don't flash a Sense kernel on an AOSP ROM )
If you're using SavagedZen-1.0.1 CFS HAVS noSBC (the most recent SavagedZen kernel) then you don't need to use SetCPU, the HAVS (hybrid adaptive voltage scaling) and SetCPU would work against each other. HAVS works to tone down your CPU as needed and such.
To change your governor (the thing that manages your CPU), go to Settings - CyanogenMod settings - Performance - CPU settings.
Oh, and CFS stands for "Completely Fair Scheduler". It means that it doesn't let one program use up the a huge chunk of the CPU. It is good for an overall system and is supposed to have better battery life. BFS stands for "Brain F*** Scheduler. It gives the priority to foreground tasks. Think about gaming and whatever demanding programs you may use.
I use both, but the most commonly downloaded one is CFS (at least for SavagedZen)
Here's a link to explain kernels, this guy does a great job of explaining: http://forum.xda-developers.com/showthread.php?t=894880
twiz0r said:
I use savagedzen cfs sbc. I love it. My phone does not agree with bfs kernels.
I get good performance and battery life
swyped from my cyanogenized and gingerbreaded EVO
Click to expand...
Click to collapse
SavagedZen, hands down. No competition. My phone hates BFS kernels too....
so right now im running the savage zen bfs kernel. if i want to switch to the cfs kernel do i have to do a full wipe or just a cache and dalvik?
gilbydakid said:
so right now im running the savage zen bfs kernel. if i want to switch to the cfs kernel do i have to do a full wipe or just a cache and dalvik?
Click to expand...
Click to collapse
I would recommend the Tiamat kernel personally.
Also, just make a backup, and just wipe the cache and dalvik, then flash.
teh roxxorz said:
I would recommend the Tiamat kernel personally.
Also, just make a backup, and just wipe the cache and dalvik, then flash.
Click to expand...
Click to collapse
thanx for the info.
ill give the bfs and the tiamat kernel a shot. i feel like im turning into a flash whore. lol
gilbydakid said:
thanx for the info.
ill give the bfs and the tiamat kernel a shot. i feel like im turning into a flash whore. lol
Click to expand...
Click to collapse
Lol naw, you're just experimenting. Trying not to get bored right now cuz I don't have my evo >>.
I've mainly used Tiamat. Running the current version right now...3.3.3 no SBC. It seems responsive and I'm getting pretty good battery life. I will have to try SavagedZen sooner or later to see how it stacks up.
BFS kernels theoretically are supposed to give you better battery life, I used the cfs sbc savage zen and it was pretty good for speed; the bfs sbc savage zen gave me the better battery life. The only thing I can say I definitely noticed about bfs/cfs is that scrolling on bfs seems to be VERY choppy compared to cfs. No matter what profile you use on bfs the scrolling was still super choppy. So to confirm this I got back on cfs and scrolling overall was smooth as butter in cfs. Just to put this out there, I recently switched to the tiamat kernel and I'm seeing about a 15% battery increase (sounds like a little but that's a big deal) lol.
Sent from my PC36100 using XDA Premium App
So I did as suggested...
Backup
Clear cache/data
Flash Savage
But I was under the assumption that it'd only change the kernel, not the rom? So when it booted it was a stock/default flash. I restored to my backedup rom. Did I just negate the kernel flash?
solidwater said:
So I did as suggested...
Backup
Clear cache/data
Flash Savage
But I was under the assumption that it'd only change the kernel, not the rom? So when it booted it was a stock/default flash. I restored to my backedup rom. Did I just negate the kernel flash?
Click to expand...
Click to collapse
Lol yes you did.
twiz0r said:
I use savagedzen cfs sbc. I love it. My phone does not agree with bfs kernels.
I get good performance and battery life
swyped from my cyanogenized and gingerbreaded EVO
Click to expand...
Click to collapse
How did you get Swype to work?
LeonDuhaney said:
How did you get Swype to work?
Click to expand...
Click to collapse
Swype works fine if you have beta access from the actual site. Most of the APK files of swype flying around have expired because they released another beta version not too long ago. I believe 2.29 is the latest. I could be wrong about the number.
Sent from my EVO ;-) XDA Premium App
I use my EVO heavily and need great battery life from a kernel which should I use Tiamat or Savaged zen. ?
Sent from my PC36100 using XDA App
Personally I like Tiamat. but you'll have to test which your phone likes better.
I say try both as well. Try SZ first though because you'll probably end up using and sticking with Tiamat. Personally, I seemed to get the best battery life with that kernal. THOUGH, the CFS 0.2.1 SZ kernel is amazing. I havent had much luck with the latest ones.
What's better for battery life, SUV or HAVS??? And r there any kernels out for gingersense ROMS yet??
Sent from my PC36100 using XDA Premium App
This link should help
http://forum.xda-developers.com/showthread.php?t=894880
Personally I've had terrible luck with any suv kernels on my evo so havs has been better for me.
There are NO kernels out there for 2.3 sense roms only 2.2.
Right now I'm running Gingersense with the latest netarchy more havs sbc kernel. For some reason though I can't download from the market anymore... still trying to figure that one out.
That being said Gingersense is still awesome!
I have had the best luck and battery life with HAVS the best for me was Tiamat_Evo v3.3.8. I would also suggest in using the Kernel Manager app http://forum.xda-developers.com/showthread.php?t=1030486.
My wife has an supersonic and i was wondering if there are any sense gb kernels with smartass v2? I have been running tinys sense gb kernel with sa2 on my incredible, and the battery life is amazing.
I'm not sure about sa2 but try freedom kernal agressive its the best sense kernal Ive ever used
Sent from my PC36100 using XDA App
cmlusco said:
My wife has an supersonic and i was wondering if there are any sense gb kernels with smartass v2? I have been running tinys sense gb kernel with sa2 on my incredible, and the battery life is amazing.
Click to expand...
Click to collapse
There are currently no sense kernels with smartass v2. I agree with the previous poster, lithids freedom kernel is your best bet.
Looking for the best possible battery life kernel for Myn's Warm 2.2. I know I'm gonna use sbc, but not sure what kernel to use. I've been using AOSP and never messed looked into sense kernels.
Netarchys sbc
Sent from my PC36100 using XDA App
ava0425 said:
Looking for the best possible battery life kernel for Myn's Warm 2.2. I know I'm gonna use sbc, but not sure what kernel to use. I've been using AOSP and never messed looked into sense kernels.
Click to expand...
Click to collapse
I seem to get the best battery life out of SavagedZen 2.2.1 Great kernel.
bwbishop said:
I seem to get the best battery life out of SavagedZen 2.2.1 Great kernel.
Click to expand...
Click to collapse
Savagezen is a aosp kernal it won't work with sense roms
Sent from my PC36100 using XDA App