Develop Bugs

CM7 and battery saving?

Im curious, if i need any apps like SetCPU or Cpu Tuner for CyanogenMod7.
I think somewhere i did read, that CM7 Kernel is doing all that (like undervolting/underclocking when screen is off), am i right or should i use SetCPU for better battery life?
Also if CM7 kernel is doing it, i guess its not safe to use such app as it would interfere with each other?
Thanks in advance...

I don't know the specifics but the newer CM7 builds have a built in overclocking tool more or less exactly like SetCPU. You can use that. CM7 is pretty good on battery life anyway as I can get 2 days out of it but it depends on my usage. I don't know about the kernel though but you could google it or ask thalmas.

k3lcior said:
Im curious, if i need any apps like SetCPU or Cpu Tuner for CyanogenMod7.
I think somewhere i did read, that CM7 Kernel is doing all that (like undervolting/underclocking when screen is off), am i right or should i use SetCPU for better battery life?
Also if CM7 kernel is doing it, i guess its not safe to use such app as it would interfere with each other?
Thanks in advance...
Click to expand...
Click to collapse
using set cpu is actually useless in cm7, if you want good battery click on the thread that's in my sig. ppl keep telling me that its good

deleate pls

Try juice defender.

You could try this http://forum.xda-developers.com/showthread.php?t=1081393 with a havs kernel.
I get up to 4 or 5 days with GingerVillain (It's based on CM7). I'm also using SetCPU, because the CM7 based CPU settings didn't work for me.

I think CM7 is good as is, but you can find OC option in Cyanogen Setting.

k3lcior said:
I think somewhere i did read, that CM7 Kernel is doing all that (like undervolting/underclocking when screen is off), am i right or should i use SetCPU for better battery life?
Also if CM7 kernel is doing it, i guess its not safe to use such app as it would interfere with each other?
Click to expand...
Click to collapse
All kernels can do that... app or CM7 settings are just some GUI to do it the easier way. But you can set it via terminal too

[Q] cm7 and setcpu update

[Q] cm7 cpu setting or setcpu?
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.
so i was 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.
p.s. please also visit this thread on battery life

AFirst of all, all SavagedZen kernels are Havs kernels (as far as I remember, I'll double check in a few). Anyway, if you are using a Havs kernel, changing cpu settings is pointless/counteractive. I would either leave the settings alone or switch to a no-havs kernel. You can check in settings>about phone.
EDIT: However, if you must mess with the settings, you can find them in Cyanogenmod Settings under Performance Settings. I don't know of a way to set profiles from that screen, though - only max/min & governor.

hi i have an evo running cm7 and i had setcpu and my phone kept restarting however i looked up setcpu again in the market and it said that they just ran an update to stop the problem with cm7, does this mean that setcpu is better to use than the cpu setting in cm7?

Green_Arrow said:
hi i have an evo running cm7 and i had setcpu and my phone kept restarting however i looked up setcpu again in the market and it said that they just ran an update to stop the problem with cm7, does this mean that setcpu is better to use than the cpu setting in cm7?
Click to expand...
Click to collapse
You shouldn't need setcpu use the cpu setting in cm7. They put it there for a reason, those guys are sharp!

I still use setcpu because I like my screen off profiles etc. You should update your setcpu if it prompted you to. I think the latest changes were for cm7/GB.
Sent from my PC36100 using XDA Premium App

Yes but it doesn't let u make profiles unlike setcpu, or does it?
I believe the profiles is definately the most useful
Sent from my PC36100 using XDA Premium App

It says it was for cm7
Sent from my PC36100 using XDA Premium App

I believe the SavageZen governor is a specially tweaked/optimized version of the SmartAss governor.
And if you use Smartass/SavageZen governor, I think it also automatically undervolts when sleeping, and essentially mimics what a screen-off profile in SetCPU would do.

plainjane said:
AFirst of all, all SavagedZen kernels are Havs kernels (as far as I remember, I'll double check in a few). Anyway, if you are using a Havs kernel, changing cpu settings is pointless/counteractive. I would either leave the settings alone or switch to a no-havs kernel. You can check in settings>about phone.
EDIT: However, if you must mess with the settings, you can find them in Cyanogenmod Settings under Performance Settings. I don't know of a way to set profiles from that screen, though - only max/min & governor.
Click to expand...
Click to collapse
but how exactly does havs control battery usage? and if i use setcpu wouldn't the havs not function only setcpu will function b/c of priority?

serdna75 said:
I believe the SavageZen governor is a specially tweaked/optimized version of the SmartAss governor.
And if you use Smartass/SavageZen governor, I think it also automatically undervolts when sleeping, and essentially mimics what a screen-off profile in SetCPU would do.
Click to expand...
Click to collapse
how do u use Smartass/SavageZen governor?

Threads Merged... please post your question once.

Green_Arrow said:
how do u use Smartass/SavageZen governor?
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Click to collapse
In CM Settings, go to Performance Settings & then CPU settings. Under available governors choose SavagedZen or Smartass. I'd try them out & see which you like the most. I prefer SavagedZen, I seem to get better battery life & performance.

egzthunder1 said:
Threads Merged... please post your question once.
Click to expand...
Click to collapse
Thanks, sorry its my 2nd day on this forum

plainjane said:
In CM Settings, go to Performance Settings & then CPU settings. Under available governors choose SavagedZen or Smartass. I'd try them out & see which you like the most. I prefer SavagedZen, I seem to get better battery life & performance.
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Click to collapse
thanks atm im using the savagedzen, and jw is autokiller memor optimizer useful now or not?

Green_Arrow said:
thanks atm im using the savagedzen, and jw is autokiller memor optimizer useful now or not?
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Click to collapse
Personally I have never needed a task killer while on CM7, so I am going to recommend against it.

Well I had talked to someone else that is using it like that and they said they get amazing battery life
Sent from my PC36100 using XDA Premium App

I say no toward any kind of task killer. First of all, they're pointless. You're killing stuff that isn't using any power to begin with, which then restarts anyway. The task killer itself is actually doing something, running on a set schedule, where as the tasks you're killing are just sitting in memory for faster opening.
It bugs me that even the techs at Sprint recommend it, so every person that doesn't know anything about how their phone works thinks it's necessary. Then in the market for every clock widget you see everyone going "like zomg the clock doesn't keep time your app sucks 1*" because the damn task killer is killing it. That's if they can even figure out how to use it & not complain that it "won't open", despite clear instructions on how to put a widget on your screen.
Sorry, totally went off on a rant there.
But yeah, stay away from task killers & let Android do its job. You don't have to have a ton of memory free for your phone to run perfectly fine under normal usage. I don't notice a difference between 300mb & 50mb free. If you don't worry about it, you won't either.
Free memory does not equal more battery.

plainjane said:
I say no toward any kind of task killer. First of all, they're pointless. You're killing stuff that isn't using any power to begin with, which then restarts anyway. The task killer itself is actually doing something, running on a set schedule, where as the tasks you're killing are just sitting in memory for faster opening.
It bugs me that even the techs at Sprint recommend it, so every person that doesn't know anything about how their phone works thinks it's necessary. Then in the market for every clock widget you see everyone going "like zomg the clock doesn't keep time your app sucks 1*" because the damn task killer is killing it. That's if they can even figure out how to use it & not complain that it "won't open", despite clear instructions on how to put a widget on your screen.
Sorry, totally went off on a rant there.
But yeah, stay away from task killers & let Android do its job. You don't have to have a ton of memory free for your phone to run perfectly fine under normal usage. I don't notice a difference between 300mb & 50mb free. If you don't worry about it, you won't either.
Free memory does not equal more battery.
Click to expand...
Click to collapse
but doesn't free memory mean less things are running or even being used just a tad bit which does mean a better battery life?

Green_Arrow said:
but doesn't free memory mean less things are running or even being used just a tad bit which does mean a better battery life?
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Click to collapse
No. Memory has nothing to do with battery.
Screen, radios, and CPU use battery and that's about it.
Sent from my PC36100 using XDA App

matt2053 said:
No. Memory has nothing to do with battery.
Screen, radios, and CPU use battery and that's about it.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
So do u agree w/ system panel/juice defender?
Sent from my PC36100 using XDA Premium App

Best Kernel to Run with Cyan 7.0.2

I am looking for some help with the best Kernel I can run with Cyans roms. Looking for good battery like everyone else, but something stable that wont bring my phone down.
I forgot what Kernel I tried a while back but once my phones screen turned off I could never get it to wake up again unless I pulled the battery so I don't want to relive that one.
Any help or Suggestions would be great.

Lostdarma said:
I am looking for some help with the best Kernel I can run with Cyans roms. Looking for good battery like everyone else, but something stable that wont bring my phone down.
I forgot what Kernel I tried a while back but once my phones screen turned off I could never get it to wake up again unless I pulled the battery so I don't want to relive that one.
Any help or Suggestions would be great.
Click to expand...
Click to collapse
i have savaged zen bfs havs 1.1.0
for me great battery life.

Go with Tiamat 3.3.8, if your phone reboots due to the undervolting, flash viperboy's overvolt script.

Savagaed-Zen 2.0.0 cfs-havs-wimax(sbc or nonsbc is your choice) w/ vipers undervolt script.

Could someone give me a link to Savagaed-Zen 2.0.0 cfs-havs-wimax and vipers undervolt script.
I take it I add both to the SD card and then use clockwork to flash the zips?
Also what exactly does the vipers undervolt script do for me? I want to be sure I have good power still.

Kernel: http://forum.xda-developers.com/showthread.php?t=917755
Underscript: http://forum.xda-developers.com/showthread.php?t=1028322&highlight=viperboy+voltage
The underscript is explained in the 1st post in that link. It saves the heck out of battery life. If the Savaged-Zen kernel doesnt work out for you, then Tiamats is the way to go.

knowledge561 said:
Kernel: http://forum.xda-developers.com/showthread.php?t=917755
Underscript: http://forum.xda-developers.com/showthread.php?t=1028322&highlight=viperboy+voltage
The underscript is explained in the 1st post in that link. It saves the heck out of battery life. If the Savaged-Zen kernel doesnt work out for you, then Tiamats is the way to go.
Click to expand...
Click to collapse
When you say if the Saveged-Zen docent work out try the Tiamats one. What will I notice that would be wrong with Saveged so i know what to look for?

Lostdarma said:
When you say if the Saveged-Zen docent work out try the Tiamats one. What will I notice that would be wrong with Saveged so i know what to look for?
Click to expand...
Click to collapse
Your phone may freeze/lag/reboot.

teh roxxorz said:
Your phone may freeze/lag/reboot.
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Click to collapse
Gotch yah. Do you run one of the undervolts on yours? What one do you run?

Lostdarma said:
Gotch yah. Do you run one of the undervolts on yours? What one do you run?
Click to expand...
Click to collapse
I run the 100mv, as my phone can handle it. Start at 100, and if your phone doesn't boot, or freezes short after, battery pull, flash the removes undervolt script, then flash the one below it, like 100 > 75, untill you get one that is stable for you.

teh roxxorz said:
Your phone may freeze/lag/reboot.
Click to expand...
Click to collapse
Also which of the Savage ones do you use?
This one SavagedZen(MOD)-RC2-Evo4G.zip looks to be the most downloaded is this the one to get? Also don't want anything with the trickle battery stuff.
Thanks for all your help here.

Lostdarma said:
Also which of the Savage ones do you use?
This one SavagedZen(MOD)-RC2-Evo4G.zip looks to be the most downloaded is this the one to get? Also don't want anything with the trickle battery stuff.
Thanks for all your help here.
Click to expand...
Click to collapse
I personally haven't used savaged zen since I switched to Tiamat, but the cfs played nice for me, along with bfs, never used and sbc kernel; my personal preference. And n ever a problem.

teh roxxorz said:
I personally haven't used savaged zen since I switched to Tiamat, but the cfs played nice for me, along with bfs, never used and sbc kernel; my personal preference. And n ever a problem.
Click to expand...
Click to collapse
Alright I downloaded all the volt ones and the savage to the SD card so here goes nothing

Lostdarma said:
Also which of the Savage ones do you use?
This one SavagedZen(MOD)-RC2-Evo4G.zip looks to be the most downloaded is this the one to get? Also don't want anything with the trickle battery stuff.
Thanks for all your help here.
Click to expand...
Click to collapse
Thats a ROM. Look for Savaged-Zen AOSP Kernel. In my opinion search for Tiamat Kernel instead. I just flashed it with the -50 undervolt script and my phone doesnt freeze anymore with no lag either.

knowledge561 said:
Thats a ROM. Look for Savaged-Zen AOSP Kernel. In my opinion search for Tiamat Kernel instead. I just flashed it with the -50 undervolt script and my phone doesnt freeze anymore with no lag either.
Click to expand...
Click to collapse
Are you using this file Tiamat_Evo-v2.1.5.zip?

Lostdarma said:
Are you using this file Tiamat_Evo-v2.1.5.zip?
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Click to collapse
No. Im using Tiamat v3.3.8.

knowledge561 said:
No. Im using Tiamat v3.3.8.
Click to expand...
Click to collapse
Can you give me a link to that one. Wanna make sure I flash the right one to my evo.

http://www.tiamat-aosp.com/downloads/tiamat-evo/
It's the last one on that page.

Lostdarma said:
Can you give me a link to that one. Wanna make sure I flash the right one to my evo.
Click to expand...
Click to collapse
i found it, had to scroll down

knowledge561 said:
http://www.tiamat-aosp.com/downloads/tiamat-evo/
It's the last one on that page.
Click to expand...
Click to collapse
So its safe to flash the kernel and the undervolt in one session then reboot or should i put the kernel on and reboot and then do the undervolt?

Cpu

Im good on everything else except when it comes the CPU thing. I have no idea what the numbers mean when you set the CPU for some reason. To slow the phones resources when the screen is off right? Can anyone point me to the direction of an app that can do this? What about an app that turns the data off once I turn the screens off. A free one. Thank you and sorry if Im not making sense or sounding dumb
Sent from my PC36100, running MIUI 1.5.13 - Tiamat-v4.0.2 using XDA Premium App.

augoza said:
Im good on everything else except when it comes the CPU thing. I have no idea what the numbers mean when you set the CPU for some reason. To slow the phones resources when the screen is off right? Can anyone point me to the direction of an app that can do this? What about an app that turns the data off once I turn the screens off. A free one. Thank you and sorry if Im not making sense or sounding dumb
Sent from my PC36100, running MIUI 1.5.13 - Tiamat-v4.0.2 using XDA Premium App.
Click to expand...
Click to collapse
SetCPU can modify the processor speed and allow you to set a profiles. However, you're running Tiamat so if you haven't changed anything your default governor is smartass which has a built in screen off profile of 128min/384max.
As far as turning data off, check out ultimatejuice. There is a free version that is limited in what it does, but it might be worth paying for. Also, for battery saving, check out my EVO link in my sig for some undervolting mods.

You can set the cpu governor with a program called setCPU on the marketplace. You can further control the CPU by flashing another kernel. What ROM are you running? Stock? I would try the netarchy kernel (newest version) if you're running a sense-based ROM.. I've found it has phenomenal battery life (medium use i get 15-20hrs) and I'm overclocked to 1.152ghz.
A program called tasker can also make your data connection go off and back on with the screen. I'm unsure how to set the profile but I do know thats possible. Try looking around here: http://tasker.wikidot.com You should be able to find something about it.
EDIT: Nevermind about netarchy, did not see your signature on your ROM and kernel.

ok, so ur on aosp and tiamat. try changing governer to smartass. will give you much better battery life, and you won't have to worry about 'numbers'.
btw the numbers are the cycles per second, or the speed the cpu works at. i personally underclock to 537 (998 is stock) to save a bunch of battery, and it still runs perfectly fine for me (cm7 with tiamat)

dkdude36 said:
ok, so ur on aosp and tiamat. try changing governer to smartass. will give you much better battery life, and you won't have to worry about 'numbers'.
btw the numbers are the cycles per second, or the speed the cpu works at. i personally underclock to 537 (998 is stock) to save a bunch of battery, and it still runs perfectly fine for me (cm7 with tiamat)
Click to expand...
Click to collapse
Governor is smartass by default on Tiamat

-viperboy- said:
Governor is smartass by default on Tiamat
Click to expand...
Click to collapse
didn't know that. thanks.

-viperboy- said:
SetCPU can modify the processor speed and allow you to set a profiles. However, you're running Tiamat so if you haven't changed anything your default governor is smartass which has a built in screen off profile of 128min/384max.
As far as turning data off, check out ultimatejuice. There is a free version that is limited in what it does, but it might be worth paying for. Also, for battery saving, check out my EVO link in my sig for some undervolting mods.
Click to expand...
Click to collapse
Thanks everybody! ....Viperboy thanks for the info unfortunately I still have lots of questions haha. And yes I already been through all the viper undervoltings, 25 through INSANE! A question I have is with those vipervoltings, I assume they'll show different results depending on which kernel and rom i'm running correct? Plus im pretty much sticking with MIUI....I usually use the 25 vipervolting. Now I'm on tiamat v4.0.3. Are you saying sense I'm using tiamat its already set to smartass, so it'll be unnecessary to use the setcpu app? Also I like savZen to what's the default governor on that? Final question, turning the data off when the screen goes off using ultimatejuice unnecessary if I'm running tiamat? Sorry for the bombarding of questions thanks again
MIUI 1.5.13 - Tiamat-v4.0.3 ​

I think you should not use SetCPU...
Just sayin'....

HipKat said:
I think you should not use SetCPU...
Just sayin'....
Click to expand...
Click to collapse
Any reason?
Sent from my PC36100, running MIUI 1.5.13 - Tiamat-v4.0.3 using XDA Premium App.

augoza said:
Thanks everybody! ....Viperboy thanks for the info unfortunately I still have lots of questions haha. And yes I already been through all the viper undervoltings, 25 through INSANE! A question I have is with those vipervoltings, I assume they'll show different results depending on which kernel and rom i'm running correct? Plus im pretty much sticking with MIUI....I usually use the 25 vipervolting. Now I'm on tiamat v4.0.3. Are you saying sense I'm using tiamat its already set to smartass, so it'll be unnecessary to use the setcpu app? Also I like savZen to what's the default governor on that? Final question, turning the data off when the screen goes off using ultimatejuice unnecessary if I'm running tiamat? Sorry for the bombarding of questions thanks again
MIUI 1.5.13 - Tiamat-v4.0.3 ​
Click to expand...
Click to collapse
Yes, most of the scripts lower by a certain range. So it all depends on the kernel you are running. Some of my scripts (Extreme, Insane, v2 scripts) specify all the voltages so no matter what kernel you're running, it sets the voltages to exact values. If you can go lower than -25 and you're stable, do it!
I find SetCPU unnecessary. I only have it installed because I use it for testing my mods and things, but I that's the only reason. But smartass is good enough for me, no other governors give me as good batter life. Defauly governor on SZ is their own governor (SavagedZen) it's based on interactive, I believe. There is more info on their site.
Tiamat (or any kernel for that matter) don't turn off 3G when the screen is off. You would need an app to do that.
augoza said:
Any reason?
Sent from my PC36100, running MIUI 1.5.13 - Tiamat-v4.0.3 using XDA Premium App.
Click to expand...
Click to collapse
Uses a good bit of memory, for one. Two, because the kernels here run pretty good right out of the box.

1, it's useless, and 2, the OP seems like he isn't ready to use it.

HipKat said:
1, it's useless, and 2, the OP seems like he isn't ready to use it.
Click to expand...
Click to collapse
Well, it's definitely not useless. It's a great app, I just find no need for it other than testing my mods.

-viperboy- said:
Well, it's definitely not useless. It's a great app, I just find no need for it other than testing my mods.
Click to expand...
Click to collapse
That, I totally agree with, but for he average user, few know how to set it correctly and they end up with a placebo effect, or more problems.

HipKat said:
That, I totally agree with, but for he average user, few know how to set it correctly and they end up with a placebo effect, or more problems.
Click to expand...
Click to collapse
I couldn't agree more. Setting up a basic screen off profile with a conservative setting is useful, otherwise it actually gets in the way of already built in kernel benefits, actually undoing them in many cases. I stopped using setcpu a while ago and my battery life has not suffered at all.
ropodope
Sent from my Vaelpak 3.2 RC2 Evo 4g. Flash and ye shall receive.

-viperboy- said:
Yes, most of the scripts lower by a certain range. So it all depends on the kernel you are running. Some of my scripts (Extreme, Insane, v2 scripts) specify all the voltages so no matter what kernel you're running, it sets the voltages to exact values. If you can go lower than -25 and you're stable, do it!
I find SetCPU unnecessary. I only have it installed because I use it for testing my mods and things, but I that's the only reason. But smartass is good enough for me, no other governors give me as good batter life. Defauly governor on SZ is their own governor (SavagedZen) it's based on interactive, I believe. There is more info on their site.
Tiamat (or any kernel for that matter) don't turn off 3G when the screen is off. You would need an app to do that.
Uses a good bit of memory, for one. Two, because the kernels here run pretty good right out of the box.
Click to expand...
Click to collapse
Thanks viper!
Sent from my PC36100, running MIUI 1.5.20 - Tiamat-v4.0.3 using XDA Premium App.

[Q] MIUI Set CPU settings

Whats up guys? I have a question about using the Set CPU app.
Is it really worth it to use this app? Will it actually make an improvement in my battery life?
I don't want to use this app to speed up my phone, but to make it better on battery life.
I know you can set up profiles, but I'm not sure on what good setting would be to use. Can anyone give me some insight on this?
Also I'm running the latest version on MIUI and the Tiamat kernel.
P.S. Is there better kernels to be used then Tiamat?
Thanks in advance.

also I'm running the latest version on MIUI and the Tiamat kernel.
Click to expand...
Click to collapse
maybe it's just me, but am getting better bat life with the stock kernal. I ran the tiamat for a few days, switched back and it was obvious to me.

With Tiamat the default governor is smartass, which has a built in setting for when the screen is off, that only lets the phone see a max of 368640, which will save on battery life and does.
Now if you want to get into using your own profiles then an app such as Setcpu can be helpful.
I have been using this and this in place of Setcpu. It's a little faster reacting to the changes form screen off to on. Just another option.
I like the Tiamat Kernels as well as JD's Kernels. They both work well with Miui, at least on my phone anyway.

I've used Set CPU for awhile, but then got away from it. I'm back on it now since MIUI doesn't have a built in OC. I would try the two PacerguyDon suggested. I have used the andrev_oc it is fine. The second one appears to have more functions than Set CPU. Set CPU doesn't allow you to under volt if that is what you are looking for.
I saw that Set CPU is $0.99 on Amazon, if you want it. However, I would try the other two for free and donate to the one you like best.
I have been using JD's Kernel the last few days and it seems to provide better battery life than stock. I originally tried using the Smartass govenor, but had to go back to On Demand. The Smartass was causing screen wake delay when receiving a call.
I stole this from another PacerguyDon's post and it breaks down the different govenors found in most OC apps.
Govenors

Set CPU is free for XDA members. It also does allow undervolting according to their post.
http://forum.xda-developers.com/showthread.php?t=505419