I was looking at the setcpu governor and saw a list to choose from..
what are the difference in the way the kernel operate and which is the "better" governor for daily usage?
sorry if this qns has been asked before but the search result generated did not give me what i was looking for..
the only thread that was a bit useful was http://forum.xda-developers.com/showthread.php?t=793311
Bumps... anyone? Or any relevant thread for me to read up on?
Sent from my HTC HD2 using XDA App
From the setcpu website(found with a simple search of "setcpu" on google)
http://www.pokedev.com/setcpu/#7
CPU governors control exactly how the CPU scales between your "max" and "min" set frequencies. Most kernels have "ondemand" and "performance." The availability
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 the CPU load. This governor is recommended for stable benchmarking.
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.
Click to expand...
Click to collapse
socrated13 said:
From the setcpu website(found with a simple search of "setcpu" on google)
http://www.pokedev.com/setcpu/#7
Click to expand...
Click to collapse
thanks a lot.. just another question, u know whats the advantage of "interactive" vs ondemand?
bump, i'd also like to know the interactive vs ondemand
The SetCPU website explains some governors: http://www.pokedev.com/setcpu/#7
However it seems that some extra governors, not covered by the SetCPU site, have been added to some kernels; which I think should be documented so users know which one to pick.
I will add responses as to what each governor does to this post. If there are any governors not explained that you've come across, please post and we'll see if somebody can explain it.
Unexplained governors (somebody please tell me what they do)
smartass (Best explanation i've found paraphrases to: based on interactive, but better.)
----
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. - SetCPU website
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. - SetCPU website
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 the CPU load. This governor is recommended for stable benchmarking. - SetCPU website
powersave
Available in some kernels. It will keep the CPU running at the "min" set value at all times. - SetCPU website
userspace
A method for controlling the CPU speed that isn't currently used by SetCPU. For best results, do not use the userspace governor. - SetCPU website
Interactive
The 'interactive' governor has a different approach. Instead of sampling the cpu
at a specified rate, the governor will scale the cpu frequency up when coming
out of idle. When the cpu comes out of idle, a timer is configured to fire
within 1-2 ticks. If the cpu is 100% busy from exiting idle to when the timer
fires then we assume the cpu is underpowered and ramp to MAX speed.
If the cpu was not 100% busy, then the governor evaluates the cpu load over the
last 'min_sample_rate' (default 50000 uS) to determine the cpu speed to ramp down
to. - [Patches] For developers, interactive governor patch for leo kernel
Thanks,
RJackson
As explained by MDJ:
SMARTASS GOVERNOR - is based on the concept of the interactive governor.
I have always agreed that in theory the way interactive works - by taking over the idle loop - is very attractive. I have never managed to tweak it so it would behave decently in real life. Smartass is a complete rewrite of the code plus more. I think its a success. Performance is on par with the "old" minmax and I think smartass is a bit more responsive. Battery life is hard to quantify precisely but it does spend much more time at the lower frequencies.
Smartass will also cap the max frequency when sleeping to 245Mhz (or if your min frequency is higher than 245 - why?! - it will cap it to your min frequency). Lets take for example the 998/245 kernel, it will sleep at 245. No need for sleep profiles any more!
Click to expand...
Click to collapse
FerretAD said:
As explained by MDJ:
Click to expand...
Click to collapse
I saw that one but didn't use it because it didn't really explain what it does.
RJackson said:
smartass (Best explanation i've found paraphrases to: based on interactive, but better.)
Click to expand...
Click to collapse
Which Kernel support SmartAss? I use WildMonks with SetCPU 2.1.0 and I don't see the "smartass" governor in my list.
SalsaForte said:
Which Kernel support SmartAss? I use WildMonks with SetCPU 2.1.0 and I don't see the "smartass" governor in my list.
Click to expand...
Click to collapse
i have the "savage" kernal with smartass
LeeDroid's Kernals and ROMs support smartass as well
Leong428 said:
LeeDroid's Kernals and ROMs support smartass as well
Click to expand...
Click to collapse
Add Tiamat to the list.
add chad's incredikernel
SalsaForte said:
Which Kernel support SmartAss? I use WildMonks with SetCPU 2.1.0 and I don't see the "smartass" governor in my list.
Click to expand...
Click to collapse
On my evo shift the x99 kernel supports smartass for stockish froyo roms and cm7 roms
you have to have a kernel to add smartass to your list
RJackson said:
The SetCPU website explains some governors: http://www.pokedev.com/setcpu/#7
However it seems that some extra governors, not covered by the SetCPU site, have been added to some kernels; which I think should be documented so users know which one to pick.
I will add responses as to what each governor does to this post. If there are any governors not explained that you've come across, please post and we'll see if somebody can explain it.
Unexplained governors (somebody please tell me what they do)
smartass (Best explanation i've found paraphrases to: based on interactive, but better.)
----
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. - SetCPU website
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. - SetCPU website
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 the CPU load. This governor is recommended for stable benchmarking. - SetCPU website
powersave
Available in some kernels. It will keep the CPU running at the "min" set value at all times. - SetCPU website
userspace
A method for controlling the CPU speed that isn't currently used by SetCPU. For best results, do not use the userspace governor. - SetCPU website
Interactive
The 'interactive' governor has a different approach. Instead of sampling the cpu
at a specified rate, the governor will scale the cpu frequency up when coming
out of idle. When the cpu comes out of idle, a timer is configured to fire
within 1-2 ticks. If the cpu is 100% busy from exiting idle to when the timer
fires then we assume the cpu is underpowered and ramp to MAX speed.
If the cpu was not 100% busy, then the governor evaluates the cpu load over the
last 'min_sample_rate' (default 50000 uS) to determine the cpu speed to ramp down
to. - [Patches] For developers, interactive governor patch for leo kernel
Thanks,
RJackson
Click to expand...
Click to collapse
Thanks for the kind descriptions...
I've translated them to Korean for my fellow countrymen!
>,<
http://caleb1783.tistory.com/157
Thanks for this. Smartass has been a mystery to me.
When I installed SETCPU I selected auto-detect, now on my device (not a HD2, but this seemed like a good place to ask as it is directly related) now I have no way to select the governor at all (box is blank), how to I change the detection from automatic to a device type "Tegra 2" in my case, I see no option to allow me to do this?
Thanks,
ERIC
Powersave
I read on this forum that Power save SetCPU governor saves the best battery. I Hope this is true?
I am trying to get my hands on powersave
I can't find powersave in the "market" though.. What's up with that? Can anyone tell me which one it is? Maybe give the name of the developer so i can find it back easier?
thnks in advance
Im using galaxy s 2 with lite'ning rom 6.1 ninphetamine 2.0.5
ssienn said:
I read on this forum that Power save SetCPU governor saves the best battery. I Hope this is true?
I am trying to get my hands on powersave
I can't find powersave in the "market" though.. What's up with that? Can anyone tell me which one it is? Maybe give the name of the developer so i can find it back easier?
thnks in advance
Im using galaxy s 2 with lite'ning rom 6.1 ninphetamine 2.0.5
Click to expand...
Click to collapse
Yeah, that's not how it works. Governors are a part of the kernel. If you want features in your kernel that you don't have, you must flash a new kernel.
also, perhaps you should reread what 'powersave' is. It will keep your phone at the lowest cpu speed constantly. This will save battery, sure, but it will also completely destroy your phone's performance. Might as well go back to your old Moto Razr.
thx, actually, i set those gov randomly before i read this post
Ondemand vs. Smartass vs. Performance gov. - Test
The idea was, that maybe the display eats so much power,
that if it is on, the CPU setting does not make a big different.
Bottom line: it does.
Phone: HTC Sensation, Leedroid Sensational 3.1 (kernel 3.2)
Conditions: Simulating light cpu use like writing email:
Brightness 50% (no timeout), MP3 playing (Volume=1, headphone), a new document on the screen,
Wifi and 3G network off (these have fluctuation, so it is easier to compare if these are off)
Ondemand 192/1188 governor: 5 h 10 min
Performance governor: 4 h 20 min
SmartassV2 192/1188 governor: 5 h 2 min
Off course if the display is off, it is easy to choose, because there is no need for performance.
I set up Conservative 192/810, but any similar can work.
I choose Ondemand, and using "Tasker" to switch to Performance, if certain applications are active,
like Doodle Jump - which run a little smoother with the Performance, for as an example.
thanks for the info...
nice, thanks
Thanks, cleared my doubts.
completely noob question, how do u choose between governors? set cpu from the market its a paid app, and the one i downloades from the official post wont work
i have a galaxy s2 with Touch X-POWER+ 2.1 [XXKI3] rom
guys is there an explanation of how the new CPU governors work, on the latest kernels ..?
ie. smoothass, smartassV2, interactiveX etc... ?
regards
raz
raziel123 said:
guys is there an explanation of how the new CPU governors work, on the latest kernels ..?
ie. smoothass, smartassV2, interactiveX etc... ?
regards
raz
Click to expand...
Click to collapse
Here is Overclock 101
http://www.droidforums.net/forum/rescue-squad-guides/47871-overclocking-101-a.html
shankar10 said:
Here is Overclock 101
http://www.droidforums.net/forum/rescue-squad-guides/47871-overclocking-101-a.html
Click to expand...
Click to collapse
Thanks Shankar, but this does not answer my question,
I Specifically asked how the New Governors such as SmartassV2, InteractiveX, smoothass etc work, not the old ones you posted a link for.
regards
Raz
In short:
SmartassV2 - tweaked Smartass
InteractiveX - same as Interactive but has screen-off profile built in
OndemandX - same as Ondemand but has screen-off profile built in
Virtuous - tweaked SmartassV2
Smoothass - more aggressive smartass
Lagfree - based on conservative (fast downclocking)
There is also
wiki.rootzwiki.com/CPU_Frequency_Scaling
Hello
I recently installed the rom:
[5.0.2] SIXPERIENCE [V2.0]
http://forum.xda-developers.com/galaxy-s5/development/sixperience-beta-s6-rom-g900f-t3097002
now my phone is overheating - 75-80 degrees C.
and the battery is draining very fast.
can any one recomend me good setting for under volting and setting the right govonor and schedulers for the Linux 3.4.0 - KT-SGS5-LP5.0-TW-G900-05.02.2015
Thanks
Shlomi
mr-blue001 said:
Hello
I recently installed the rom:
[5.0.2] SIXPERIENCE [V2.0]
http://forum.xda-developers.com/galaxy-s5/development/sixperience-beta-s6-rom-g900f-t3097002
now my phone is overheating - 75-80 degrees C.
and the battery is draining very fast.
can any one recomend me good setting for under volting and setting the right govonor and schedulers for the Linux 3.4.0 - KT-SGS5-LP5.0-TW-G900-05.02.2015
Thanks
Shlomi
Click to expand...
Click to collapse
Your phone is baking itself not overheating... Something is really wrong with this ROM! You can download profiles in KTweaker shop and check some of them.
qubbus said:
Your phone is baking itself not overheating... Something is really wrong with this ROM! You can download profiles in KTweaker shop and check some of them.
Click to expand...
Click to collapse
can you recommend me on governor and scheduler ?
Governor powersave to stop bakery under the hood. Scheduler have nothing to hot temp. It is responsible for flash memory. Stock is cfq
qubbus said:
Governor powersave to stop bakery under the hood. Scheduler have nothing to hot temp. It is responsible for flash memory. Stock is cfq
Click to expand...
Click to collapse
Hi
I don't have powersave
I got these:
conservative
intelliactive
intellidemand
interactive
lionheart
nightmare
ondemand
pegasusq
performance
slim
smartmax
whealthy
zzmoove
which is the best for powersave?
which is the best for performance?
which is the best that give you good performance and using the multicore CPU and doesn't consume much battery ?
about the schedular
which one is better for read/write to SD card CFG or SIO ?
Many thanks
Shlomi
What kernel are you using?
linux version 3.4.0 (boeffla-kernel-1.1-beta2-samsung=g900f20150513
Ask creator then why this kernel is killing your phone. I have never seen such temperatures on my device
thanks
@mr-blue001 try different kernel, imo there is something with settings on this one. I had never tested kernel which you are using so I can't tell anything more. I believe that in the author's thread you can get more accurate answers for your issue.
Which CPU governor should I use? Ondemand or Interactive?
dancivuk said:
Which CPU governor should I use? Ondemand or Interactive?
Click to expand...
Click to collapse
Hi,
Please refer to this guide : http://forum.xda-developers.com/lg-g2/help/test-t3032171
If you take some time and give this a good read, you can tweak your kernel settings all by yourself.
dancivuk said:
Which CPU governor should I use? Ondemand or Interactive?
Click to expand...
Click to collapse
ondemand more responsive interactive responsive and better battery than ondemand..
ondemand - balanced
interactive - battery friendly
The choice is yours.