Hi guys,
I was looking on Nexus forums and i've found many interesting threads thta can be useful for every android device. Here we go:
Battery Drain Benchmarks
http://forum.xda-developers.com/showthread.php?t=1478406
CPU governors and i/o schedulers
http://forum.xda-developers.com/showthread.php?t=1478418
Battery Saving Governor Benchmarks
http://forum.xda-developers.com/showthread.php?t=1507204
All credits to xda member bedalus
Related
Hi,
Since we can add the smartass module developped for the X8, I wonder what are the pros/cons of smartass vs. ondemand, as regards energy consumption and performance.
If there's already information about that, feel free to point me to the source. But don't hesitate to give me your opinnion based on your experience.
SebbyNC
sebbync said:
Hi,
Since we can add the smartass module developped for the X8, I wonder what are the pros/cons of smartass vs. ondemand, as regards energy consumption and performance.
If there's already information about that, feel free to point me to the source. But don't hesitate to give me your opinnion based on your experience.
SebbyNC
Click to expand...
Click to collapse
Rudimentary comparisons:
Generally:
Performance: Smartass < Ondemand
Battery life: Smartass > Ondemand
Cheers
SpyderX
Remember to set correct settings for smartass.
Thanks SpyderX, in your comparison is there any way to have an idea about how much one is better than the other (5% or 25% advantage or disadvantage....) ?
sebbync said:
Thanks SpyderX, in your comparison is there any way to have an idea about how much one is better than the other (5% or 25% advantage or disadvantage....) ?
Click to expand...
Click to collapse
No. But battery life can last a whole day more using smartass and moderate use. As for performance smartass governor will cause minor lag on opening apps etc.
Can somebody please explain the SetCPU governors to me? Normally I would use Smartass V2, but we only have the stock kernel.
The main governors I am curious about are mot_hotplug and hotplug. My phone seems to use a lot of battery when these are enabled, even with underclocked minimum scaling values.
Last night I ran my phone on ondemand at 300 min -300max (screen off profile) and it didn't drop 10%, first increment on battery reading stock ROM). Today while in school, it dropped from about 80% - 20% (using the same profile but with mot_hotplug).
Do all of the other governors manage both processors and hotplug can not?
You might as well use hotplug m8
MattyOnXperiaX10 said:
You might as well use hotplug m8
Click to expand...
Click to collapse
Why? That doesn't make any sense based from the findings I posted.
I'm using mot-hotplug in a week I'll know
Was using ondemand but I read an article where it shows the descriptions. Apparently hotplug behaves very similarly to ondemand but has the capability to turn off the 2nd core if there isn't a lot of workload. I switched to hotplug and so far its shown a significant difference in battery life. However, it may be a placebo as well so i'll stick to it for a week or so and then compare.
*edit
heres a link with better explaination
http://icrontic.com/discussion/95140/android-cpu-governors-and-you-setcpu-system-tuner-tegrak
evonc said:
Was using ondemand but I read an article where it shows the descriptions. Apparently hotplug behaves very similarly to ondemand but has the capability to turn off the 2nd core if there isn't a lot of workload. I switched to hotplug and so far its shown a significant difference in battery life. However, it may be a placebo as well so i'll stick to it for a week or so and then compare.
*edit
heres a link with better explaination
http://icrontic.com/discussion/95140/android-cpu-governors-and-you-setcpu-system-tuner-tegrak
Click to expand...
Click to collapse
I use kholks custom CPU governor it seems to be a lot snappier and battery use is good.
There is info in the development forum on here about it and using it.
Sent from my XT910 using XDA
Hi all, now i'm using vr- lulzactive with 100-1200 and stock voltages can somowone teach me what is the best governor and i/o for this rom?
cfq/ondemand are usually paired with siyah kernel
AleDB said:
Hi all, now i'm using vr- lulzactive with 100-1200 and stock voltages can somowone teach me what is the best governor and i/o for this rom?
Click to expand...
Click to collapse
This is difficult to say, as it depends on your hardware, apps, settings, region, carrier and usage ... and what is "best" for you (best performance or best battery life).
So, you may have to check out the available governors and schedulers yourself.
Here is a very good thread about io schedulers and governors => http://forum.xda-developers.com/showthread.php?t=1369817
If you don't read it already and want to know more.
To the experts, could you please provide us good combinations of CPU governors and I/O schedulers for every need, like for saving battery consumption or for good performance for lww and other same devices?btw im using CM10 wiht LuPus kernel in my LWW. thanks in advance!
Governor - I/O Scheduler
ironhide3.2 said:
To the experts, could you please provide us good combinations of CPU governors and I/O schedulers for every need, like for saving battery consumption or for good performance for lww and other same devices?btw im using CM10 wiht LuPus kernel in my LWW. thanks in advance!
Governor - I/O Scheduler
Click to expand...
Click to collapse
You should have checked this first - http://forum.xda-developers.com/showthread.php?t=1989824
It has a detailed description for many governors and i/o schedulers.
What's the best CPU governor for GT-i9300?
Following are the CPU governors available:
1) ondemand
2) userspace
3) powersave
4) pegasusq
5) performance
Im looking for fast speed (ie no lag) and good battery life. Thanks!
sahil9797 said:
What's the best CPU governor for GT-i9300?
Following are the CPU governors available:
1) ondemand
2) userspace
3) powersave
4) pegasusq
5) performance
Im looking for fast speed (ie no lag) and good battery life. Thanks!
Click to expand...
Click to collapse
What is good for your needs might not be good for someone else's needs. Try them and work it out which is best for you.
We're all looking for speed and battery life; it's always a fine balance!
sahil9797 said:
What's the best CPU governor for GT-i9300?
Following are the CPU governors available:
1) ondemand
2) userspace
3) powersave
4) pegasusq
5) performance
Im looking for fast speed (ie no lag) and good battery life. Thanks!
Click to expand...
Click to collapse
Please bother to read the faqs and guides .
Basics read first.
http://forum.xda-developers.com/showthread.php?t=2344125
Critical you read the first two posts .
Quick tip, do your research... just search for "CPU governors information xda" into Google and read one or more of the information threads that come up. These explain the various merits and shortcomings of each governor so you can decide for yourself which is best.
Thread closed.