CPU Governors? - Xoom Q&A, Help & Troubleshooting

Who knows the difference and can explain what the lagfree, interactive, ondemand and userspace CPU Governors are? Please, no guessing, I can do that too. If you know what some of these are, share the info, please. Thanks.

Google or read set CPU readme ....
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Governors and Schedulers:
http://forum.xda-developers.com/showthread.php?t=1242323

This link describes lagfree. Only God knows why I didn't have the sense to confer with professor Google.
http://wiki.rootzwiki.com/CPU_Frequency_Scaling

Related

Set CPU question

Can anyone elaborate on the scaling settings in set CPU?
Some are obvious......powersave etc
Conservative
Userspace
Ondemand
Powersave
Interactive
Performance
I think its clear performance scales the CPU to highest speed. Powersave to lowest. But all the others seem to be the same. Is conservative a step up from powersave?
I can't find a thread that does a good job at breaking this down by the numbers.
Thanks to who ever points me in the right direction!!!!
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Rtfm, jason.
Always wanted to say that
It's been a while since I checked but iirc the main difference between them is how quickly and aggressively the speed goes up and down. I read it on the help or about link in the app itself.
I did a simple Google search last night and found my ans.
Conservative vs ondemand is the answer for me.
Conservative scales up incramentaly as neded
On demand scales to max from min when needed
For best life with minimal performance hit, it seems conservative is the best scaling setting in set CPU.
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Setcpu settings?

Hi all
Just purchased set CPU for nexus s.
Was wondering what would be the best settings for my NS?
Thanks
Heeter
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There is no "best settings"
It varies with your setup. Personally when I was using setcpu (using cm7 now so i dont need it). I had it setup w/ stock clocks (1000/100) with smartass governor. That was it. From what I read with smartass governor you don't need additional profiles
Thanks NYYfan,
For your response,
Heeter
I don't have smartass in the available governors...
Only : interactive, conservative, userspace, powersave, ondemand and performance.
Which one correspond to smartass?
Where can i found the governors description?
EDIT : Governors description are here http://forum.xda-developers.com/showthread.php?t=843406
anremi said:
I don't have smartass in the available governors...
Only : interactive, conservative, userspace, powersave, ondemand and performance.
Which one correspond to smartass?
Where can i found the governors description?
EDIT : Governors description are here http://forum.xda-developers.com/showthread.php?t=843406
Click to expand...
Click to collapse
Smartass governor is available when you flash a compatible kernel that supports that governor.
Most people (including myself) use Netarchy's 1.3.4 which features the smartass governor. You can google about that governor to find out what its about.

[Kernel] SGS2-Streamline

** Default Macnut R1 Kernel
~ SGS2-Streamline Kernel
~~ New Boot Logo
~~ Undervolted
~~ LPM is max at 1188
~ Default Min / Max
~~ 192 Mhz Min per cpu
~~ 1512 Ghz Max per cpu
~ BLN Supported ( Insert credit here, not sure who wrote the codec )
~ Supported I/O's
~~ Noop ( Default )
~~ Deadline
~~ CFQ ( Seems to be Problematic with slow downs )
~~ SIO
~~ BFQ
~~ VR
~ Supported Governors
~~ savagedzen
~~ brazilianwax
~~ intellidemand
~~ wheatley
~~ lagfree
~~ interactiveX
~~ lulzactivev2
~~ minmax
~~ lazy
~~ interactive
~~ conservative
~~ ondemand
~~ scary
~~ smartass
~~ smartassv2 ( Still needs tweaking, scaling fails at times )
~~ lionheart ( Default )
Download:
TMO SGS2
kernel_T989.zip
AT&T I727 SkyRocket
kernel_I727.zip
Mirror:
promiseofcake said:
Hey,
I decided to mirror your kernel:
http://www.promiseofcake.com/xda/macnut-r1-kernel_i727.zip
Download speed is pretty good.
Let me know if you'd like me to remove it.
Lucas
Click to expand...
Click to collapse
FINALLY A FIRST WOOOO YEAHH ALWAYS WANTED TO BE FIRST AT SOMETHING ..
wow we needed a new kernel .. gonna try this thank you..anything i should be aware of problems wise? otherwise listed..
shazbot!!!!
wali01x said:
FINALLY A FIRST WOOOO YEAHH ALWAYS WANTED TO BE FIRST AT SOMETHING ..
wow we needed a new kernel .. gonna try this thank you..anything i should be aware of problems wise? otherwise listed..
Click to expand...
Click to collapse
Not that I can think of, don't have much time to be posting but all I can think of is the bootanimation.zip needs to be named /system/media/sanim.zip
eugene373 said:
Not that I can think of, don't have much time to be posting but all I can think of is the bootanimation.zip needs to be named /system/media/sanim.zip
Click to expand...
Click to collapse
good job bud. your work is always amazing..keep it up and thank you for the time spent and spending to it..
and i saw you were going through some family stuff. i hope things get better.. i know i being 27 got too many responsibilities and sometimes it just hits me on my face but keep ya head up and keep going @ it.. things will get better ..
Great New Kernel!! Thnx a lot Man!!!!!!
Yessssss!!!!! Flashing
Sent from my SAMSUNG-SGH-I727 using Tapatalk
BaconStep said:
shazbot!!!!
Click to expand...
Click to collapse
I always wanted to hump Mindy.
nice... downloading now
Sweet, may have to try this, faux is sucking out for me.
Defaulted to SIO scheduler for me. Changed ala system tuner to NOOP. What is it undervolted by as the default?
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Gray job!
NexusMod 4 and faux123 version 10
eugene373 said:
~~ 1512 Ghz Max per cpu
Click to expand...
Click to collapse
Thanks for the new Kernel!
Just curious, but does it take a lot of work to add overclocking ability to kernels?
InstigatorX said:
Defaulted to SIO scheduler for me. Changed ala system tuner to NOOP. What is it undervolted by as the default?
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Click to expand...
Click to collapse
sio is better than noop
all I can say to this kernel.... is wow. I'm in love with the lionheart governor. Haven't got around to trying the rest but its sooo smoooth. Underclocked to 1.242 and its still running nice. I was also able to underclock and additional -50mV and running stable. Sorry faux, I've turned traitor
icenight89 said:
sio is better than noop
Click to expand...
Click to collapse
Why? I read about all of them, but can you explain? This is what i've found
SIO
Simple I/O scheduler aims to keep minimum overhead to achieve low latency to serve I/O requests. No priority quesues concepts, but only basic merging. Sio is a mix between noop & deadline. No reordering or sorting of requests.
Advantages:
Simple, so reliable.
Minimized starvation of requests.
Disadvantages:
Slow random-read speeds on flash drives, compared to other schedulers.
Sequential-read speeds on flash drives also not so good.
Cm7 compatible?
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hansmrtn said:
Cm7 compatible?
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Click to collapse
No, based on Samsung based roms.
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hansmrtn said:
Cm7 compatible?
Sent from my SGH-I727 using XDA
Click to expand...
Click to collapse
Nope.
xcrazydx said:
Why? I read about all of them, but can you explain? This is what i've found
SIO
Simple I/O scheduler aims to keep minimum overhead to achieve low latency to serve I/O requests. No priority quesues concepts, but only basic merging. Sio is a mix between noop & deadline. No reordering or sorting of requests.
Advantages:
Simple, so reliable.
Minimized starvation of requests.
Disadvantages:
Slow random-read speeds on flash drives, compared to other schedulers.
Sequential-read speeds on flash drives also not so good.
Click to expand...
Click to collapse
Because it has minimal overhead and doesn't do any requeueing, only processing in order, which most of the time is good in our case as we want to give the task in use priority, which sio does
This kernel is awesome! I love it.
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governors and i/0 schedulers

can anyone tell me that, what is the specific function of each governors and i/o scheduler??
because i got confused which governor and i/o sch to be set in no frills cpu control...as i dont know there use...
thank you..
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For first info, see here:
http://forum.xda-developers.com/showpost.php?p=23797796&postcount=2

Schedulers and governors

Are governor's and schedulers the samething.If not what are schedulers used for?and what are they?arn't governors pretty much built into all new kernels?are schedulers built into kernels as well?If someone could please explain I would appreciate it.
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Mesaman2012 said:
Are governor's and schedulers the samething.If not what are schedulers used for?and what are they?arn't governors pretty much built into all new kernels?are schedulers built into kernels as well?If someone could please explain I would appreciate it.
Sent from my HTC Sensation 4G using XDA
Click to expand...
Click to collapse
look here or here

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