Develop Bugs

CPUfrec interactive, powersave, ondemand?

I see that several ROMs now have settings for "CPUfrec interactive, powersave, ondemand".
What do these do?
I am aware of SetCPU that was used to save battery, but how does this fit in with the above?
Do I need to use SetCPU on these ROMS, or is it automatic? Is it better with these new settings? What about Perflock?
An explanation of what all this is about would be useful.
Cheers.

Interactive is the one to toggle if you want performances with acceptable battery time. Ondemand is a little less reactive but saves more battery witout harming performances too much. Use powersave instead if you only care about battery time. That's it (i guess).
Sent from my HTC Desire using XDA App

Cheers, that explains it.

vnvman said:
Use powersave instead if you only care about battery time.
Click to expand...
Click to collapse
Keep in mind that Powersave keeps the phone running at 245 MHz. That is the very reason battery time becomes longer.
For me this is too low - the machine becomes too slow - and I did not buy a 1 GHz phone to only have it running at 245 MHz all the time.
Just play with the settings and see what works best for you.

An example of decent settings by people who know what there doing would be good.
Mine is set at screen off, 245min 245 max powersave.
Main profile is 998 max 245 min, interactive, with set on boot ticked.
Temp selected to 38 degrees, 245/245 powersave.
If battery becomes more or less important, what to change to in terms of govnor but also up threshold on advanced settings.
Thanks

Desire's CPU throttling

Does HTC DESIRE with stock FROYO use CPU THROTTLING by default or not?
If not the the SetCPU would really come in handy when the Desire is idle.

+1
I too would like to know this.

what do you mean throttling? you mean it drops speed at high temperature? or drops speed when idle?
by default the desire is set ondemand 998mhz when idle or at sleep it drops to 245mhz

hamdir said:
by default the desire is set ondemand 998mhz when idle or at sleep it drops to 245mhz
Click to expand...
Click to collapse
this is what I meant.
When you say sleep, does that mean that when the you press the power button once and the screen turns off.
Does this constitute as sleeping and thus lowers the clock to 245MHz?

ashrack0 said:
this is what I meant.
When you say sleep, does that mean that when the you press the power button once and the screen turns off.
Does this constitute as sleeping and thus lowers the clock to 245MHz?
Click to expand...
Click to collapse
yes when the screen turns off, unless a program is requesting cpu resources it will drop to 245 not only during screen off but during idle time too
you can improve all this by rooting ofcourse and installing kernel with different schedulers like interactive but ondemand is there in stock froyo

1.
So the stock HTC Froyo just uses 2 states.
When operating the phone it is at ~1GHz, but when the phone is idle it's at 245Mhz.
Correct?
2.
If the scheduler was Interactive but On Demand that would mean that the CPU clock would adapt to my usage. Such as this example:
- If I was browsing the net thru WIFI the clock would be ~1GHz.
- If I was just adding a calendar entry then the clock would probably be < 500 MHz.
Correct?
3.
Are there any slowdowns expected by using the On Demand schedular?

ondemand is in stock
schedulers like interactive, powersave and smartass can be added via root
no on demand also scales the frequencies not just two state
ondemand is good enough only sometimes late to respond to low latency like UI menus, for example interactive is more smart and responds faster there is another called smartass which is supposed to be a further modification
by the way you can notice ondemand sometimes late response while scrolling the default white messages widget in sense

HAMDIR
thx for the thorough explanation.
While browsing through this forum I noticed that the frame of mind is that interactive would give better battery life.
Why is that so?

Hamdir,
Thanks for your explanations Can I just ask you 1 more question. I have asked it on another thread but no-one took the time to give me an answer.
I have installed Richard Trip's svs V5e_1113 kernel but I do not have SetCPU installed. Which governor does this kernel use by default and is there a way (using a command from ADB shell) to use smartass governor instead? I really need to know this.
Thanks and I hope to get an answer this time.

Setcpu profiles

Are profiles necessary to preserve battery life? If sohow should my profiles be set?
Sent from my HTC Vision using XDA App

I get much better battery life without using any profiles... screen off profiles make the phone lag. I'm squeezing a good 18 hours out of my phone, and I am a HEAVY texter. No profiles - ondemand governor - stock clock settings at 806MHz

Running 1.5 ghz
im running 1.5ghz

I've found battery to be better without profiles. Just make sure you have setcpu set to on demand. I'm running CM 6.1.1, 1209/346 on demand for set cpu. I'm getting about 18 hours with moderate to heavy use of music and data.
Would agree that screen off profiles aren't that great (and really aren't that necessary). I've had issues with answering calls or the phone being laggy when the phone wakes.
Sent from my HTC Vision using XDA App

It's kind of controversial. Depends on the governor, scheduler, etc. You either trust the system to be smart enough to wind itself down with the screen off, or you don't.
I think you'll find that even when you overclock, your CPU shouldn't spend THAT much time at the higher frequencies...

I'm running 1.5mhz and use a screen off profile on 386mhz.
Get much better battery out of it when using this!!!
Without the profile, i have 9 hours of batterylife. Now i'm having around 14 hours...
Just try it and see what's best for you

Sh0rty007 said:
I'm running 1.5mhz and use a screen off profile on 386mhz.
Get much better battery out of it when using this!!!
Without the profile, i have 9 hours of batterylife. Now i'm having around 14 hours...
Just try it and see what's best for you
Click to expand...
Click to collapse
What gov. are you using? I know some need profiles but ones like the interactive governor don't and actually perform worse with profiles. I'd always set a temp profile though - you don't want to go iPhone on something and set it on fire.

Im running the CyanogenMod 6.1.1 ROM with Pershoot 1.516GHZ kernel on my G2. I have my setcpu profiles setup as below (recommended by another G2 user from another forum):
screen off-
Max: 368
min: 245
priority: 100
Temp>39.7c
max: 768
min: 245
priority: 88
Battery<10%
max: 245
min: 245
priority: 70
Battery <15%
max: 368
min: 245
priority: 66
Battery< 25%
max: 768
Min: 245
priority: 60
charging/full
max: 1516
min: 245
priority: 50
charging ac/full
max: 1516
min: 245
priority: 50
charging usb/full
max: 1516
min: 245
priority: 50
Anyone notice any possible issues with these profiles?

KCRic said:
What gov. are you using? I know some need profiles but ones like the interactive governor don't and actually perform worse with profiles. I'd always set a temp profile though - you don't want to go iPhone on something and set it on fire.
Click to expand...
Click to collapse
I'm on cm6.1.1 now...
sent from my htc desire z using tapatalk.

[LIST] My "CPU tuner" recommandations

So many people on these forums ask about the best CPU tuner profiles to set on their Desire Z that I thought i'll make a thread here to refer to.
Note: I've been using and experimenting with CPU tuner for 5 months now, and i faced all the known issues before i came to these settings. Also, I have been listening to everyone's remarks. So i think it works the best. Now don't blame me if your phone turns into a fireball after you applied these settings (well, it's rare though...).
If you don't have it, you can download "cpu tuner" from the market. I'm using the 2.1.2 version.
Tips first:
You need a ROOTED phone to operate CPU tuner properly.
You'd better get a good kernel which allows a wide frequency range and the basic governors.
Read the help that's included with the program (Menu -> Help).
Unless you really need it, do not run the Check System Capabilities.
Not all phones can handle high CPU speed, just experiment. It's mostly a matter of luck.
The purpose of CPU tuner is to allow you to save battery life while getting the best of your phone when you need it. It allows you to change two important things in your phone, defined in "profiles":
Governor: the "brain" that decides when to lower or raise frequency, depending on what you do
Frequencies: the min/max frequencies the governor can choose between.
These profiles are applied depending on your battery status. Battery remaining life is the variable for "triggers", which fire the profile changes.
Usually, you want your phone to give you the best of its power, as long as possible, so i defined only two triggers: one for "Battery is fine, thanks" and one for "Battery is at agony, stop it now!" (below 20%).
Here we go:
Before you start, go to settings, and turn profiles off.
Virtual governors
In the virtual governors tab, we define the 3 ones we need:
VG: Screen Off: "interactive" governor
VG: Normal: "ondemand" governor, with threshold up at 95
VG: Powersave: "conservative" governor with thresholds up at 97 and down at 90
Profiles
Now, let's set 3 profiles for the different cases:
Screen off: Governor "VG: Screen Off", frequencies 691-806Mhz
Normal: Governor "VG: Normal", frequencies 806-1210Mhz
Powersave: Governor "VG: Powersave", frequencies 599-806Mhz
In all cases, let all services on "unchanged" unless you want some specific behavior.
Triggers
Ok, now that we have everything we need, let's say what to trigger, and when:
Let 2 triggers:
1.Battery Good
Level: 100
On Battery: Normal
Screen Locked: Screen off
On Power: Normal
(optional but advised) Call in progress: Normal
(optional) Battery hot: Powersave
2.Battery Low
Level: 20
On Battery: Powersave
Screen Locked: Screen off
On Power: Normal
(optional but advised) Call in progress: Normal (this is important for call stability)
(optional) Battery hot: Powersave
You're ready to go now! But we can check some options if you'd like to:
User interface:
Be sure not to enable the Calculate power usage.
Also, here you can remove the (annoying) notifications, just let the status bar icon.
Profiles and triggers
Remember this optional "Call in progress" option? Here you cna enable it.
Service Switches
It's a good idea to check the "Manual service change" box, not to be bothered when you manually turn some connection on and it goes because you run low on battery.
Buy me a beer
Honestly, you can buy him two ones...
And to thank me, just click on the "Thank" button on this forum
When you're done, turn profiles on again.
Tell me how you do with these settings!

hi. i have a desire z running virtuous 1.0.2 with advanced kernel 2.2.0.
i follow you settings and after 2 days of use i've got the screen wake up issue on incoming call.
there's something i missed?

Are you using the Call in progress settingon every trigger ?

yes, i've set both to the normal profile as in your guide.
now i've disabled the option in settings and hope that works...

Yeah, try without this setting.
If you keep having the issue, try to raise the min frequency of screenoff.

ok! now i've found a good config!
i've increased screen off min freq to 691 and enabled again the call in progress option.
if the call in progress option is disable, the phone locks during a call and the proximity sensor won't work anymore (for example if you wish to end a call).
i hope this will help some other users!
thank you for help and guide!

Please give again a feedback in some days, and then i'll add your findings in the 1st post.
Thanks

after 3 days of usage i can say that this is the right config.
no more wake up / in call locking / end call wake issues!

Alright and you're using interactive for screenoff, right? I'll edit my first post

You guys minimum frequencies look a bit too high, I have mine set to 245 minimum and it gets me much better battery life. I would also suggest using SetCpu (it's free for registered xda members). Just a thought though.
Edit: CPUTuner can also cause issues with any rom that isn't CM7; and also on CM7 under the right circumstances.
Sent from my HTC Vision using XDA App

@Ninj: yes, that's right!
@PaganAng3l: any suggestion is welcome! why don't you post an example of your settings?

Great little write up. I look forward to setting it up after work!

My profiles in SetCPU are pretty basic, but I get great preformance and around 30 hours of battery with moderate/heavy usage. Here are my profiles:
Temp > 42.0 C = 806 max / 245 min
Governor = Conservative Priority = 95
Charging = 1209 max / 245 min
Governor = On Demand Priority = 90
Battery < 25% = 806 max / 245 min
Governor = Powersave Priority = 85
Battery < 50% = 1017 max / 245 min
Governor = On Demand Priority = 80
Battery < 101% = 1209 max / 245 min
Governor = On Demand Priority = 75
That's it! I don't personally experience "wake lag" or a blank screen with incoming calls with these settings, but if you do simply bump up your minimum frequencies to above 300 mhz.
Sent from my HTC Vision using XDA App

PaganAng3l said:
[...]
Battery < 25% = 806 max / 245 min
Governor = Powersave Priority = 85
[...]
Click to expand...
Click to collapse
powersave? i can't find that governor...
i've set it on conservative.
i'm trying your settings but i still have the wake up issue.
now i'm going create a screen off profile.
if even this won't help, i'll try to increase the minimum freq to 300mhz.
however i have to say that this setup really help to increase battery life.
after 2 day of moderate usage i'm still at 66%!!

eFFeRaTuM said:
powersave? i can't find that governor...
i've set it on conservative.
i'm trying your settings but i still have the wake up issue.
now i'm going create a screen off profile.
if even this won't help, i'll try to increase the minimum freq to 300mhz.
however i have to say that this setup really help to increase battery life.
after 2 day of moderate usage i'm still at 66%!!
Click to expand...
Click to collapse
Your kernel may not support a "powersave" governor. I just flashed pershoot's kernel and I no longer have it. Try bringing all of your max frequencies to 1171mhz or lower. This helps solve the waking issue too.
Edit: having a screen off profile caused me no end of trouble. It may not be an issue for you but I thought I would share.
Sent from my shiny metal G2 w/ meXdroid V2

PaganAng3l said:
My profiles in SetCPU are pretty basic, but I get great preformance and around 30 hours of battery with moderate/heavy usage. Here are my profiles:
Temp > 42.0 C = 806 max / 245 min
Governor = Conservative Priority = 95
Charging = 1209 max / 245 min
Governor = On Demand Priority = 90
Battery < 25% = 806 max / 245 min
Governor = Powersave Priority = 85
Battery < 50% = 1017 max / 245 min
Governor = On Demand Priority = 80
Battery < 101% = 1209 max / 245 min
Governor = On Demand Priority = 75
That's it! I don't personally experience "wake lag" or a blank screen with incoming calls with these settings, but if you do simply bump up your minimum frequencies to above 300 mhz.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Going to give this a try. Hope I see an increase in battery life.

Why not just get the pyromod kernal and watch it do its magic?? but cool find
Sent from my HTC G2 PyroMod 2.0

Is it normal for CPU Tuner to give a "has been granted Superuser permission" message everytime the phone comes back from standby?
Sent from my T-Mobile G2 using XDA App

jankypr said:
Is it normal for CPU Tuner to give a "has been granted Superuser permission" message everytime the phone comes back from standby?
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
Yes that is normal. However since you're an xda member you can get the app SetCPU for free and I believe it's superior to cpu tuner. Just search the forum for "setcpu download" and it should turn up.
Sent from my shiny G2 w/ meXdroid V3

Performance profiles with C.M.

guys i have a doubt with profiles perfromance.
In my M8, CyanogenMod profiles are these:
powersave:
min 300mhz
max 2200MHz
conservative
balanced:
min 1190mHz
max 2200 mhz
interactive
performance:
min 300mhz
max 2200mhz
performance
There is a way to change them? From Settings -> Performance I do not keep the data that I post but in the end it always return to the default settings.
Can you show me your profiles?
And then, there is a way to decide how many processors to use and which to turn off?
thank you