I've tried looking on google but all I could find were explainations of the differences between various CPU governors, or more in depth guides for similar things or different devices. I'm currently rynning Cyanogenmod 11 with the 4.4.2 version of Android
I'm looking at the Smartass 2 governor,
because I like its idea of having ideal frequencies, and am currently using the PegasusQ governor, but I dont know a lot about my current governor. Is there a benefit i can get from swapping?
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Are you guys using setCPU with the new radio and Das Bamf 1.5 and 4.4.2 kernel. If so, what are your settings? Currently I'm not overclocking and have a profile set to 245 max when the screen is off, both with ondemand scaling. I'm down to 75% after a little over 3 hours since unplugging and am wondering if anyone's getting better results with different settings.
potcryan said:
Are you guys using setCPU with the new radio and Das Bamf 1.5 and 4.4.2 kernel. If so, what are your settings? Currently I'm not overclocking and have a profile set to 245 max when the screen is off, both with ondemand scaling. I'm down to 75% after a little over 3 hours since unplugging and am wondering if anyone's getting better results with different settings.
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I'm using smartass at 1036 Mhz. No screen off profiles or anything. Let smartass do it's thing.
I didn't mean to click thanks...was trying to click "quote". haha. But thanks anyway.
Sorry for my noobness but what exactly is the difference between smartass and ondemand? I think I recall Adryn recommending ondemand in the bamf thread but I could be wrong.
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potcryan said:
Sorry for my noobness but what exactly is the difference between smartass and ondemand? I think I recall Adryn recommending ondemand in the bamf thread but I could be wrong.
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I think he does recommend ondemand too. I tried it out for a day and found that smartass was better for my phone. Smartass will generally pick the lower clock speed more often than ondemand. I guess the best way to know is try out a couple different ones and find out what's best. That's why he makes different versions of his kernels too.
I'm running 4.4.2 at 1.2ghz and smartass gov. I haven't tried setting up profiles and using on demand with 4.4.2 and instead hoped smartass would do its thing better than I could. Seems to be working good so far.
FWIW, my phone seemed more laggy at 1.5ghz on this kernel. It is quite snappy at 1.2.
Smartass automatically uses the lowest voltage when the screen is off and your profile may conflict with that. I'm using Smartass and the only profile I use is for battery less than 20% = underclock.
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Ive searched and found zero answers ;-)
What I/O scheduler would provide the best results as far as speed, battery life, etc. on the fascinate?
I don't know which is the fastest, but SIO or NOOP are pretty fast.
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Ill give noop a shot.
I've read that combinations of schedulers and CPU governors matter, for example running CFQ and conservative together gets a very good performance ratio as opposed to noop and conservative. I use CFQ but I really have never noticed any major difference between them.
Im using smartass. What would be best combo of speed and battery life.
If you're on TW, stay with cfq which gives you a more stable camera. What are you running?
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im running vanilla gingerbread
davwman said:
im running vanilla gingerbread
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Running conservative on aosp kind of defeats your purpose, on demand and smart ass are always the way to go, cfq will always give you the best balance as far as output (and more stability.). Differences in battery life are marginal by changing your I o scheduler
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so smartass an cfq it is, thsnks.
violets are red
questions in general make choppa blue.
I learned a lesson today,
and I hope you did too.
If you're on VGB with the built-in kernel, CFQ's a great choice paired with ondemand or conservative. If you're using Glitch, try Deadline and ondemand with screenstate scaling set to conservative.
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Jazz848 said:
If you're on VGB with the built-in kernel, CFQ's a great choice paired with ondemand or conservative. If you're using Glitch, try Deadline and ondemand with screenstate scaling set to conservative.
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Thanks for the info!
I'm using the biffmod GB (CM7 based rom) with a built in glitch kernel and after reading about I/O schedulers I've gone with BFQ and smart ass... it's ran smooth so far.
Hi ~ everyone!
I am studying about android kernels. And there is two cpu schedule: cfs & bfs
I googled both and found that cfs is keeping the CPU utilization of each app about the same.
Using cfs kernel, when android runs more apps, each app can occupy less cpu resource.
Is that means performance will be slower?
Thanks!
See here: http://www.cs.unm.edu/~eschulte/data/bfs-v-cfs_groves-knockel-schulte.pdf.
This is quite interesting. I never know about slowing down or anything. I'd give it a try on bfs...
I'd prefer Cfs due to it has better signal and the signal won't drop easily.
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How come all the custom kernels for the photon only have the standard 2 cpu Governors- performance and powersave?
I was reading up on cpu Governors here - http://forum.xda-developers.com/showthread.php?t=1369817
There are so many nice ones which the photon kernels lack.. Even my old zte blade had options for different ones
Is the lack of governors in photon kernels because of lack of nvidia support or the just needs time and work which the devs (understandably) don't have..?
Someone explained this a while ago. I think it was joker or shabby, and I have no clue where the post is. If I remember right, the idea was that tegra 2 doesn't need or wouldn't benefit from governors. The chip itself handles that job just fine.
That's really all I remember about it.
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It would be great to be able to have a kernel w more governors and undervolt etc
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Anyone in here use SetCPU still for underclocking? I just set mine up again after taking the OTA for JB and I was wondering which CPU governor was the best? Is it 'hotplug'? The default is 'interactive' but I remember there was a better governor.
JDunc said:
Anyone in here use SetCPU still for underclocking? I just set mine up again after taking the OTA for JB and I was wondering which CPU governor was the best? Is it 'hotplug'? The default is 'interactive' but I remember that was a better governor.
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I use interactive on all my Android devices. It has the best balance between battery life and performance.
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