Develop Bugs

Noob SetCPU question

Is anyone using SetCPU with the new Froyo? I just downloaded it from Marketplace and have a question. It disabled the perflock and I lowered the mhz to 806. If my intent is to get a longer battery life did I do the right thing? It was running at 998 so I'm thinking that my lowering it I'll slow down the processor and in turn give myself a bit more life in the battery. Is that right? Thanks in advance.
Sent from my incredible Droid Incredible using the XDA app

Disabling perflock shouldn't scale it down. Did you set it to automatically detect setting when you first started the app? If not, you should. (Might have to re-install)

Yeah it auto detected a min of 245 and max of 998. I couldn't change the max whether setting to user, ondemand or performance without disabling the perflock. Once I disabled that I was able to scale the max level down.
Sent from my incredible Droid Incredible using the XDA app

setcpu was causing too many crashes for me on Froyo leaked 8-01-10.
I uninstalled it for a refund.. even when it did work for me.. I didn't notice any major battery savings.

ive noticed slight battery savings with setcpu. biggest thing ive noticed is the charge time. with a set profile to run the cpu @ 245 when screen is off the phone will charge the battery to 100% from dead in just about an hour and half. and the standby time increases running that profile as well.

New to SetCPU!

I know there are quite a few threads on setCPU BUT this is my first time using and i was wondering for my rom, kernel, and phone usage what you guys think is best to save battery but still be snappy when the screen is on.
My phone setup:
2.2 Android
2.15.00.09.01 Baseband
King CFS 10 kernel
Evervolv v0.2.1 rom
pri 1.77_003
PRL 60670
I have the phone on wifi about 90% of the time because some of my reading says it saves battery. I use my phone for browsing facebook and a few forums, send a few hundred texts a day, talk on the phone maybe 10 times a week ( im a college student), regularly on email. NOW with that said how would YOU set up the set cpu for battery life but no lag while operating.

You need to update your PRL ...

twigums said:
I know there are quite a few threads on setCPU BUT this is my first time using and i was wondering for my rom, kernel, and phone usage what you guys think is best to save battery but still be snappy when the screen is on.
My phone setup:
2.2 Android
2.15.00.09.01 Baseband
King CFS 10 kernel
Evervolv v0.2.1 rom
pri 1.77_003
PRL 60670
I have the phone on wifi about 90% of the time because some of my reading says it saves battery. I use my phone for browsing facebook and a few forums, send a few hundred texts a day, talk on the phone maybe 10 times a week ( im a college student), regularly on email. NOW with that said how would YOU set up the set cpu for battery life but no lag while operating.
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Click to collapse
I always leave my main profile at 245 mhz min and 998 mhz max (ondemand mode). Then, of course, you'll want a screen off profile, and as far as that goes, I've heard that 128 and 245 draw the same voltage, so I have mine set to 128 min, 245 max (powersave mode). Other than that I just have some low battery profiles and a temp one. I don't really get any lag with this setup, but I've heard some people do. If that's the case, and I'm only talking about lag when first turning on, just up the 245 to 384 or something and I'd make it ondemand.

do i need to check set on boot under the scaling option

twigums said:
do i need to check set on boot under the scaling option
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Click to collapse
No. I would leave it unchecked. This has been known to cause some issues.

grouse130 said:
No. I would leave it unchecked. This has been known to cause some issues.
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Click to collapse
what kind of issues are you talking about? i've only heard and practice leaving it off when experimenting with overclocking (since it can put you in a boot loop). once you find a stable overclock speed, you can check it to start on boot so that you don't have to open setcpu every time you reboot if you decide to run it at that speed.
on-demand is a little less laggy (barely noticeable to me) but may consume more juice than conservative.
most kernels will step down to 245 when the screen is off so creating a profile to do that is redundant. you can verify this with the app android system info under the system tab > cpu.
having said that, i don't use setcpu unless i'm benchmarking and want to overclock.
kings #6 bfs kernel is awesome for battery life (default is conservative governor). it's what i use. give it a go when you've gotten a good feel on how kings #10 cfs is working out for you.

Here's what I would hit up..
set it to conservative. Conservative starts your phone at your minimum clock speed and works its way up, as opposed to on demand which starts at the highest and works its way down.
then for advanced i have sampling rate at 50000
Up threshold at 95% <- that's saying that when the workload hits 98%, crank up the processing speed
Down threshold at 70% <- when the load hits 70% turn it down
That stuff right there is agressive as hell, and when I say agressive, i mean...you probably won't ever hit your max frequency unless you are seriously doing some heavy lifting. The settings there are what I use to save up battery, you can get through a day easy with everything on (GPS, Wifi, sync, 3g, the works) and with your current usage, since its similar to mine (except that i also run beejive, skype and twitter at refresh rate of 5min).

grouse130 said:
No. I would leave it unchecked. This has been known to cause some issues.
Click to expand...
Click to collapse
Yeah I think you've probably just seen that on some custom kernel pages. They only say not to do that because if you're testing battery life with say...HAVS, it could interfere w/o you realizing it. Set on boot just means you don't have to turn setCPU on everytime you reboot your phone.

just go set a profile on minimal mhz and on powersave mode if kerenal allows if not just use ondemand

My problem with the "Set on Boot" option is if you accidentally fat finger the slider past your stable clock with it checked, you're looking at boot loops and possibly having to restore from a backup to sort it out. SetCPU really needs the "Set on Boot" option grayed out and a "Lock Settings" option that must be checked before "Set on Boot" becomes accessible (unchecking "Lock Settings" would also uncheck "Set on Boot").
Another option would be a user defined field for max stable clock in the advanced settings that would limit the slider on the main tab. Either one should eliminate accidental boot loops.

[Q] SetCPU and battery life - am I doing this right?

I'm looking to optimize my battery life without sacrificing performance when I need it. I know it sounds easier said than done, but I figure that if anyone might know how, they'd be here. My goal here is to have the performance when I need it, and to keep the battery preserved when I don't.
I'm rooted and running ViperROM 4.0.4 Trinity v2.0. I have the "Genocide 1.2GhzOC EB13 Kernel v0.3a" kernel also flashed to my phone. SetCPU is installed and I've set up my profiles, but I think I may be doing something wrong with them.
I am using autodetect settings as is recommended for adjusting clockspeed. Everything is set to on boot. All profiles are set to conservative as I'm not sure which ones actually apply. Below are screens for everything I have currently set up.
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Am I doing anything wrong here? And if not, is there anything I need to do to improve battery life without sacrificing performance?

I would bump your charging max to 1200Mhz and keep the min at 1000Mhz, although I keep max and min while charging through AC power at 1200Mhz.
Your screen off profile is fine. If you get hiccups or missed calls for any reason, bump the max up to 400Mhz.
If you can run it smoothly, set your minimums for your battery profiles to 100Mhz. It what I'm at now and it runs fine. You may want to keep your minimum for your "screen off" profile at 200Mhz if you get hiccups or missed calls like I mentioned before.
As for your battery <50% profile, I'd set the min at 200Mhz if you're wanting to save battery. Don't want the phone running at a higher clock when it doesn't need it. That's the point of running the min lower.
I personally uncheck the "set on boot" to allow SetCPU to always come back to the appropriate profile rather than going back to the default setting.
Also, set a Battery < 101% profile which will be your new default. I have mine at max 1000Mhz and min 100Mhz and it works well.
Also, conservative simply means the battery will remain at the lowest possible clock until it needs more juice. Assuming it starts at 200Mhz, it'll bump up to 400Mhz, 800Mhz, etc. depending on what the demand is. It will jump frequencies from 200Mhz to 1000Mhz if necessary.
On Demand means the CPU will either be at your minimum set clock frequency or your maximum.
On Demand is usually the most compatible/stable, but the conservative setting is best for battery/performance if your kernel allows it.
Hope this helps =). Let us know if you have more questions.
EDIT: The "set on boot" button simply sets the min and max that's shown on the main screen in SetCPU. If this button is unchecked but the "enable" button on the profiles menu is checked, your profiles will still adjust accordingly.

I can't really see the profiles but do you have the Max set at 400 when the battery is under 50%? If you do your phone will crawl. The 1000 is undervolted. That way you get speed and save battery. And on demand does not.mean that your CPU is either at min. Or Max. It means that it Scales faster then Conservative does. My profiles are when battery is less than 50% I go to 1000/100 and when screen is off I'm at 200/100 all set on demand. My regular setting.is 1200/100.
Sent From My Evo Killer!

I'd like to hijack this since I have a similar question.
I'm using ACS Frozen 1.0 and have the latest SetCPU and am still getting pretty crummy battery life.
The weird thing is that in SetCPU the maximum CPU frequency is always 1.2ghz even if I drag the slider down to 1.0. I don't currently have any profiles enabled that would cause this, so why won't SetCPU let me top off a 1ghz undervolted instead of 1.2ghz?
My battery life definitely hasn't improved at that's a big bummer for me :\

I also have a question. I kept getting a message about superusers rights not being given. I searched to see how to grant SU rights, but could not fond any. I turned the phone off and on, and that message did not pop up anymore.
Now the main screen I cannot adjust any of the numbers, is this normal? I can however enable and make profiles. I made the first one if temp is greater then 0 (I obviously do not want it like this, but its just a test) then it should be OC to 1200. When I saved this in the top right hand corner it says I am at 1200, however when I bring up a program, and go to setcpu and look at the main screen it says 1000.
So what am I doing wrong.

badbeats said:
I also have a question. I kept getting a message about superusers rights not being given. I searched to see how to grant SU rights, but could not fond any. I turned the phone off and on, and that message did not pop up anymore.
Now the main screen I cannot adjust any of the numbers, is this normal? I can however enable and make profiles. I made the first one if temp is greater then 0 (I obviously do not want it like this, but its just a test) then it should be OC to 1200. When I saved this in the top right hand corner it says I am at 1200, however when I bring up a program, and go to setcpu and look at the main screen it says 1000.
So what am I doing wrong.
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Click to collapse
This might be a dumb question, but is your phone fully rooted?

I think so I used Clockwork mod 3.0.6 and I am running Bonsai 3, with 2.2.1

ZeppelinJ0 said:
I'd like to hijack this since I have a similar question.
I'm using ACS Frozen 1.0 and have the latest SetCPU and am still getting pretty crummy battery life.
The weird thing is that in SetCPU the maximum CPU frequency is always 1.2ghz even if I drag the slider down to 1.0. I don't currently have any profiles enabled that would cause this, so why won't SetCPU let me top off a 1ghz undervolted instead of 1.2ghz?
My battery life definitely hasn't improved at that's a big bummer for me :\
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Click to collapse
Yeah I hear you, I get the same crummy battery life with SyndicateROM, I was dying for the 30 hours ! Starting to think it's the battery itself.

musclehead84 said:
I can't really see the profiles but do you have the Max set at 400 when the battery is under 50%? If you do your phone will crawl. The 1000 is undervolted. That way you get speed and save battery. And on demand does not.mean that your CPU is either at min. Or Max. It means that it Scales faster then Conservative does. My profiles are when battery is less than 50% I go to 1000/100 and when screen is off I'm at 200/100 all set on demand. My regular setting.is 1200/100.
Sent From My Evo Killer!
Click to expand...
Click to collapse
Do you keep your 1200/100 on conservative? And what's the battery life you're getting on average? Dummy question but you know...
I'm going to try out this setting today actually with BakedSnack.

Referring to those of you getting "crummy" battery life. The screen takes so much battery many other things don't come into play. Therefore, if you're getting 4-6 hours of screen-on time, you're getting about what everyone else is getting. Those who report 30 hours+ probably have there phone idle more often than not.

Blankrubber said:
Referring to those of you getting "crummy" battery life. The screen takes so much battery many other things don't come into play. Therefore, if you're getting 4-6 hours of screen-on time, you're getting about what everyone else is getting. Those who report 30 hours+ probably have there phone idle more often than not.
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Click to collapse
Ahh this is a good point then. I'm still confused though why when I set my SetCPU to 1ghz it still keeps it at 1.2 :\

ZeppelinJ0 said:
Ahh this is a good point then. I'm still confused though why when I set my SetCPU to 1ghz it still keeps it at 1.2 :\
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Click to collapse
Did you update to the latest Twilight kernel? It's 1.0.1 I believe. Try that as I believed it fixed some CPU scaling issues. Just install the zip in CW, but I'd still wipe cache at last, just in case.
Sent from my SPH-D700 using XDA App

Blankrubber said:
Did you update to the latest Twilight kernel? It's 1.0.1 I believe. Try that as I believed it fixed some CPU scaling issues. Just install the zip in CW, but I'd still wipe cache at last, just in case.
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
+1 I think this was a bug with the original release of Twilight Zone that was fixed in 1.0.1.

Blankrubber said:
Did you update to the latest Twilight kernel? It's 1.0.1 I believe. Try that as I believed it fixed some CPU scaling issues. Just install the zip in CW, but I'd still wipe cache at last, just in case.
Sent from my SPH-D700 using XDA App
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Click to collapse
I'm trying this out right away, thanks!
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[Q] Underclock below 300MHz for Defy / Defy+?

I recently have bought a Defy plus.
Stock 2.3.4 ROM used so far with LauncherPro.
Doing OK with battery life so far, but now starting to look at the CPU over/underclock capabilities. Started with Antutu CPU Master and CPUTuner also.
One thing I haven't seen as yet is the ability to underclock clock below the min 300MHz.. or even whether this makes sense. I guess undervolting is the other option, but perhaps someone can guide me here.

use setvsel to oc/uv, thats the easiest and best app imo. although underclocking your phone below 300mhz may cause instability and makes the phone wake up much slower in my experience.
sent from my cm7 defy...

I agree with zakoo2: Going below 300 will not be a good idea and it will most likely not improve your battery life in any significant way:
My Defy is running between 300-600Mhz and right now the LCD screen is the biggest consumer: Changing the (auto-)brightness settings in CM7 will do *much* more to your battery life than going below 300mhz.

What really helps saving battery life: use setvsel and leave the minimum clockspeed at 300MHz, but set a vsel value of about 20 for it, then scroll down and enable "limit to vsel1 while screen is off".

Also, going below 300MHz will probably make the phone sluggish when waking up from sleep like if a call comes.
Sent from my MB525 using XDA App

im just change from 300mhz to 330mhz lowest. 300mhz will make my defy+ lag when got incoming call. im using smartass govenor.

I heard some guy out there got 80 MHz and running, but I'm not sure of it.
As people said, clocks lower then 300 MHz would make your phone run horribly while waking up (i.e., it would take a long time for the screen to turn on when receiving a call, and you would probably miss it most of the times). Setting 300 as VSel1 and limitting to it while screen is off (2nd-init enabled bootmenu has this option, and downloading SetVSel - free at Android Market - will also do the trick if you have a rooted, but stock ROM) will help you save a lot of juice. Using a lightweight launcher (I personally recommend MetroUI or Zeam) also boosts up batt saving. Last, but not least, setting brightness to auto or minimum (using frosted/mat screen protectors will help a lot while using the phone under direct sunlight) also saves loads of charge.
Obviously, using a light ROM (I think Barebones may be a good option, though I think it's not suitable for me, but it's a personal matter) and calibrating your battery in a monthly basis (via manual calibration - you can find how to do so by googling -, wiping batt stats in custom recovery and/or using the batt calibration app included in most ROMs - but also free at AM) also help.

[Q] Music playing at half speed while screen is off.

Hello.
After installing latest Viper rom, music started playing slow every time screen turns off. It's like playing at half speed, but it works fine when the screen is on. I am not sure if this is rom issue though.
Any solution?

I got this solved.
For future reference, it was CPU setting which was set to "ondemand" in Viper tweaks. Changing this to performance solved the problem.

Are you sure you want to stick to the performance governor? From what I remember, it keeps the CPU at it maximum frequency all the time, which will lead to very high battery usage and device heating up. Maybe you should try another one, such as interactive or smartassv2 (note not all governors are available on all ROMs and kernels).

Change the kernel, I use faux 10
Sent from my HTC One X using xda app-developers app