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.

[Q] [CyanogenMod7 RC4] Overclock and Performance Settings

Hi,
I've just noticed the Performance settings menu under the CyanogenMod Settings menu and I wanted to give overclock and other features a try...safely.
I'm looking for increasing my Wildfire's performance in a remarkable way but without harming or causing any trouble to the phone. So I'd like to start in a quite conservative way.
What governor should I choose? (default: smartass)
What max and min CPU frequency? (default 518 and 352 Mhz)
What about the VM heap size? (default 24m)
What do you guys use as your settings?
Thanks a lot!

Governor : Smartass
CPU Speeds : 264 Min, 652 Max
VM Heap Size : 32 M
Remember, don't expect miracles by OC'ing your CPU. You'll probably be disappointed.

Thanks for answering!
In the meanwhile I set up 264 as min and 691 as max...is that too much and potentially dangerous?
No miracles indeed but the phone felt a bit more snappy when playing games for example.
Do you know where I can find some info about the different governors?
Also, what is exactly the VM heap size?
Thank you!

No, wont harm it. Only if you experience instability, reduce it to the next (Or rather, Previous) level.
CPU Governors:
* ondemand – Available in most kernels, and the default governor in most kernels. When the CPU load reaches a certain point (see “up threshold” in Advanced Settings), ondemand will rapidly scale the CPU up to meet demand, then gradually scale the CPU down when it isn't needed.
* conservative – Available in some kernels. It is similar to the ondemand governor, but will scale the CPU up more gradually to better fit demand. Conservative provides a less responsive experience than ondemand, but can save battery.
* performance – Available in most kernels. It will keep the CPU running at the “max” set value at all times. This is a bit more efficient than simply setting “max” and “min” to the same value and using ondemand because the system will not waste resources scanning for CPU load.
* powersave – Available in some kernels. It will keep the CPU running at the “min” set value at all times.
* userspace – A method for controlling the CPU speed that isn't currently used by SetCPU. For best results, do not use the userspace governor.
(The above wall of text is lifted from SetCPU's site)
In addition to that , Smartass is really the smart one. When your screen is on, the minimum frequency will automatically be set to 518 MHz, making your phone seem it is flying, and, when the screen is off, then, it reverts back to the minimum set value, and saves battery - Best of both worlds!
As for VM Heap Size, it is the maximum amount of heap space (i.e. memory) a single instance of the Dalvik VM (application) can obtain. Technical concept, but, you can read it up more if you like.

Thanks a lot for the insigthful reply, everything's clearer now!

i put everything on max. but thats just me. phone works fine though :L

Hi,
What's the best setting for my battery? It drains so fast.
Mine is as following:
Min.: 245 Mhz
Max.: 537 Mhz
INTERACTIVE
I have to charge the Phone every evening, thats a bit annoying.
Thank you in advance

When using the cyanogenmod settings for the cpu speed,setcpu isn't required anymore right?
Sent from my HTC Wildfire using XDA App

FrydaeXIII said:
When using the cyanogenmod settings for the cpu speed,setcpu isn't required anymore right?
Sent from my HTC Wildfire using XDA App
Click to expand...
Click to collapse
Yes, you are right. Conflicting apps are never recommended.

thanks for the tip...

[Q]Did any of you use SETCPU/ CPU tuner on Play? what is the best setting

I bet there are some of you use either the setCPU or CPU tuner on your play..
I heard it will help save some valuable juice...
I tried setCPU/CPU tuner and i think the default setting have reduce the performance when batt go before 50% or temp over certain temperature, I get annoy when i trying to fight on a 3d game...
so I really hope any expert here can advise which is the best setCPu you have used on play, for a reference for me...
beside setCPU, i like CPU tuner for the ability to toggle 3g/2g when batt is low.. so if anyone using CPU tuner instead, please share your setting for your PLAY...

heres the profiles i have on mine, in order (setcpu)gives me tripple the battery life.
ScreenOff - max 368640, min 122880
Charging - max 1024000, min 122880
Battery <10% max 368640, min 122880
Battery <35% max 768000, min 122880
scaling is OnDemand for all of them!

looks simple... but just wonder, when it move to 368... on screen off, will it automatically switch back to 1024... when we turn on the screen?

yeah. unless its below 35% or 10%

been trying out for 1 day, havnt see much improvement, but does see the batt last longer in 20% below...
i think I will try to mimic this setting to CPU tuner, which can turn off 3G somemore on extreme batt save setting, it might help more tho..

Any new tests given to improve battery life? My xperia play is rooted and am hoping that someone out there has found the best settings\profiles to use.
Please post it here. Many thanks

Anyone else use this or a similar program, if so do you get good results ?.

mug2k said:
Anyone else use this or a similar program, if so do you get good results ?.
Click to expand...
Click to collapse
I noticed an improved battery usage after using 245 max/122 min (Powersave scaling) on Screen Off and then 1024 max/122 min (Ondemand scaling) as normal.
That combined with stopping all unnecessary services seems to work great so far (although I'm still looking for alternatives to improve things).

lagfree governor on main, min 122Mhz and 1.6Ghz on max
powersave governor, 122mhz min and max, screen off profile
performance governor, 600mhz max, 122 mhz min, on call profile
all priorities set on 100, using SETCPU

Except when gaming, I have it set to 768 conservative governor, stock ROM.
Also, I have screen off set to 245 max 122 min with powersave governor.
Edit/update: for some weird reason my battery life actually decreased when using setcpu, no matter how it was set. I've now disabled it, and the battery life went back to how it was before. Weird.
Sent from Silent Earth 3

Setcpu and settings

Hi to all,
Yesterday I flashed a Bindroid Rom.. it seems to be very very optimal for battery consumption.
And then, to improve battery consumption, I would know:
1 - setCPU or similar: in wich way must I set to improve battery charge? (I don't interested in performance, velocity, reactivity, but ONLY on battery consumption on my DHD)
2 - setCPU or similar: what mean governor settings?
Thanks a lot

cubases said:
Hi to all,
Yesterday I flashed a Bindroid Rom.. it seems to be very very optimal for battery consumption.
And then, to improve battery consumption, I would know:
1 - setCPU or similar: in wich way must I set to improve battery charge? (I don't interested in performance, velocity, reactivity, but ONLY on battery consumption on my DHD)
2 - setCPU or similar: what mean governor settings?
Thanks a lot
Click to expand...
Click to collapse
Try ocbeater apk, seems to be simple..

To reduce battery consumption on your DHD, you might want to know exactly what each governor do. Usually it is set to ondemand in default. Ondemand raise the cpu speed gradually based on system workload. It is a balanced governor for speed and energy saving. You can adjust its threshold value and powersave bias to suit your needs.
For more energy saving, it is recommended to use conservative as your governor. It tends to reduce the cpu speed below the actual need. In other words, it sacrifices performance for more juice for your DHD.
Edit: Powersave governor is not recommended as it will force the cpu speed to the lowest speed available which mean super lag.

drpsyko said:
To reduce battery consumption on your DHD, you might want to know exactly what each governor do. Usually it is set to ondemand in default. Ondemand raise the cpu speed gradually based on system workload. It is a balanced governor for speed and energy saving. You can adjust its threshold value and powersave bias to suit your needs.
For more energy saving, it is recommended to use conservative as your governor. It tends to reduce the cpu speed below the actual need. In other words, it sacrifices performance for more juice for your DHD.
Edit: Powersave governor is not recommended as it will force the cpu speed to the lowest speed available which mean super lag.
Click to expand...
Click to collapse
Your infos are perfect. Any free app to set my cpu? Cputuner, ocuvbeater.. or?

cubases said:
Your infos are perfect. Any free app to set my cpu? Cputuner, ocuvbeater.. or?
Click to expand...
Click to collapse
As i mentioned, ocuvbeater is the easiest i've found..
Sent from my HTC Desire HD using xda premium

fshami said:
As i mentioned, ocuvbeater is the easiest i've found..
Sent from my HTC Desire HD using xda premium
Click to expand...
Click to collapse
Ok. Now I try ocuvbeater. I set to conservative but min and max freq? 245760 min and 768000 max now.. could be ok?
Sent from my HTC Desire HD

Yep, that would do just fine. Also, adding a sleep/wake profile can boost the battery life even more. Then observe and compare the battery life between now and then. Try to play with the app and fine tune the settings to suit your need.

To end this thread, please tell me if this settings are correct:
Set normal profile:
http://imageshack.us/photo/my-images/528/shot000001.png/
Set sleep profile:
http://imageshack.us/photo/my-images/51/shot000003b.png/
Set Charge profile:
http://imageshack.us/photo/my-images/822/shot000004.png/
And all my profiles apply:
http://imageshack.us/photo/my-images/225/shot000006.png/
I's correct?

cubases said:
To end this thread, please tell me if this settings are correct:
Set normal profile:
http://imageshack.us/photo/my-images/528/shot000001.png/
Set sleep profile:
http://imageshack.us/photo/my-images/51/shot000003b.png/
Set Charge profile:
http://imageshack.us/photo/my-images/822/shot000004.png/
And all my profiles apply:
http://imageshack.us/photo/my-images/225/shot000006.png/
I's correct?
Click to expand...
Click to collapse
Given that I have never use OC/UV Beater, I don't know exactly the setting is, but I could tell from the pictures that it has no sleep profile. All the other configs are all correct.

drpsyko said:
Given that I have never use OC/UV Beater, I don't know exactly the setting is, but I could tell from the pictures that it has no sleep profile. All the other configs are all correct.
Click to expand...
Click to collapse
This is the screenshot of sleep settings.. Could you see any mistake?
http://imageshack.us/photo/my-images...ot000003b.png/

The link is broken. What I meant earlier is your "sleep" profile is somewhat set on battery low trigger, not screen off.

cubases said:
To end this thread, please tell me if this settings are correct:
Set normal profile:
http://imageshack.us/photo/my-images/528/shot000001.png/
Set sleep profile:
http://imageshack.us/photo/my-images/51/shot000003b.png/
Set Charge profile:
http://imageshack.us/photo/my-images/822/shot000004.png/
And all my profiles apply:
http://imageshack.us/photo/my-images/225/shot000006.png/
I's correct?
Click to expand...
Click to collapse
Seems fine, but wake max seems to be bit less, u try increasing it to 99xxxx..

fshami said:
Seems fine, but wake max seems to be bit less, u try increasing it to 99xxxx..
Click to expand...
Click to collapse
At what profile do you refer?

cubases said:
At what profile do you refer?
Click to expand...
Click to collapse
normal profile