I am starting to believe that the ICS kernel scales properly although some people may claim it only scales from min to max.
I noticed on the stock GB kernel, the exact same thing happens when trying to use CPU controlling apps such as setcpu. However, for BOTH GB and ICS without using CPU controlling app, I can see the in between frequencies being used. When I try adjusting the slider THEN it starts the freaking out in terms of min/max. (Rom toolbox)
I even notice the battery life worsen tremendously when trying to use setcpu, antutu, etc on STOCK frequencies. Perhaps it has to do with people trying to use CPU apps on a kernel with the perflock enabled?
With the absence of a CPU controlling app on ICS , my battery can last the SAME (not worse, for sure) as it on GB.
Perhaps this can help those who complain about bad battery life on ICS
Sent from my ADR6425LVW using XDA
You don't need to wonder anymore! Its a function built into HTC kernels called "perflock" and its function is to continually reset the values for the min and max frequencies in order to prevent other applications such as setCPU from taking control over the CPU frequencies.
I've been using SEbastianFM's ICS OC kernel with setCPU. You are correct, that it does scale properly even though the min/max frequencies hop around. If you take notice of the current frequency, its usually appropriate for the current load level.
Furthermore, if use setCPU profiles to control the CPU speed, I've noticed it prevents the kernel from periodically reverting back to its default speed and governor settings. setCPU occasionally crashes (FC's) about once a day on me, but since I have the widget on my homescreen I notice it starts right back up again within a second or two and starts controlling the CPU speed again.
Related
its a paid app so therefore i will not post any links. but there is some info about using it on the galaxy s devices and how we should avoid some settings and use others to dodge the bugs...
copy/pasted
Description:
SetCPU is a tool for changing the CPU settings (capable of overclock and underclock) on a rooted Motorola Droid, Nexus One, G1, G2, Samsung Galaxy S, or one of many other devices to improve performance or save battery.
SetCPU also allows you to set up profiles to change the CPU speed under certain conditions, such as when the phone is asleep or charging, when the battery level drops below a certain point, or when the phone's temperature is too high. See the screenshots for examples of how you might set up profiles.
SetCPU's wide feature set make it useful to beginners and enthusiasts alike. Accelerate your processor to unleash your phone's multitasking potential, or dial your CPU's speed down to save battery.
Have an HTC Sense device with a stock ROM or kernel? If you are having trouble getting your settings to "stick," press Menu > Disable Perflock. You still have to be rooted.
Galaxy S devices: ondemand scaling is recommended. There are issues with Galaxy S kernels that may result in crashes if conservative scaling governor is used, or if the sleep profile "max" value is set too low. Please do not set the sleep profile too low, and avoid using conservative scaling.
Requirements:
all Android versions
Recent changes:
2.1.0
- Significant UI and user experience revamp, including a new background for the widget, and new notification icons
- Added a quick priority swap button to the profile lists
- Significantly improved the reliability of autodetect on certain kernels
- Numerous bug fixes and crash fixes
Click to expand...
Click to collapse
I understand it's a paid app in the market. But if you're an XDA member you just go here:
http://forum.xda-developers.com/showthread.php?t=505419
It's not a secret...
Funny, the previous version of SetCPU specifically told Galaxy S users to use conservative scaling and that ondemand would cause crashes.
Now they're saying the reverse.
Edit: Well, I switched it to ondemand as the app dev suggested and the phone turned itself off a few minutes later...
Are we suppose to flash it thru cwr?
Edit: nm I got it.
Sent from my SGH-T959 using XDA App
Argh, ever since I installed this (even after uninstalling it) my phone keeps freezing randomly while asleep!
synaesthetic said:
Argh, ever since I installed this (even after uninstalling it) my phone keeps freezing randomly while asleep!
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Click to collapse
Do you have a profile for screen turn off? If you do disable it because the phone itself lowers the cpu while at sleep.
Sent from my SGH-T959 using XDA App
I have no profiles set. I tried doing the sleep profile but it caused some annoying lag when the phone was waking from sleep.
On demand profile settings do not work, my phone has crashed 2 times. SetCpu just doesn't work I guess.
Using Nero V 3 and set CPU isn't doing anything...max setting is set to 1000.
How did you guys get it to work and what are your settings?
Sent from my Galaxy S via XDA App
Those of us using SetCPU are using overclocking kernels. Some folks might be using DOW, but I am using JAC XMOD because I'm still on Eclair as all the 2.2 ROMs annoy me currently.
(At least until I get my Bionix Blackout for Nero v3 theme finished!)
Hello,
I am wondering what the best Setcpu profiles are for SGSII when you want performance while awake and save as much as possible in Idle.
Can I put it all the way down to 500mHz while screen off and still be able to run background processes properly?
I don't really see why this shouldn't work. I had it set like that, but I also have it set to 500MHz when active quite often, as this is enough for many applications. Still, that might not be necessary, as it resides in this state quite much of the time anyway.
Since I have undervolted my phone recently, I had to set the "screen off" profile to 800MHz so that the screen comes up (otherwise, it wouldn't). But in the end, it probably doesn't matter too much what you have set for that profile, as the phone should be sleeping most of the time anyway, shouldn't it?
jeo1996 said:
Hello,
I am wondering what the best Setcpu profiles are for SGSII when you want performance while awake and save as much as possible in Idle.
Can I put it all the way down to 500mHz while screen off and still be able to run background processes properly?
Click to expand...
Click to collapse
Profiles are useless, the ondemand governor should scale down your cpu by default when not in use, that' s the whole point of this governor!
Hi guys i have a tiny problem i need clarifying please.
Before anyone says anything i already asked this question and no one seemed to be able to answer it to me. So here it goes.
My question is can we combine the two. What i mean is use Voltage Control to set cpu Voltages and use No Frills to adjust Cpu clock speeds. Voltage Control on my latest rom that i am on Hyperdroid latest version does not save my overclocking and reverts back to stock frequencies 1200Mhz-200Mhz even after i save it on boot. I leave it to reboot for a few minutes till the phone settles and go to check it and governor and i/o schedulers are saved and my voltages also but the only thing that reverts back is the cpu clock frequencies. When using No -Frills though it saves my overclocking.
So my question can i use one app to overclock and the other to undervolt and use them both at the same time?
I know stupid question and i am pretty sure that i know the answer already but if i can get a few opinions regarding the matter i would appreciate it..Also why on the latest firmware it reverts back to stock frequencies even when we save it on Voltage Control is it a bug or something and does anyone if it will get fixed as i really like that app since it does everything i need it to.
Thanks again
you can use both, but I don't see why, VC has also CPU sliders so you can set both parameters from one app
maranello69 said:
you can use both, but I don't see why, VC has also CPU sliders so you can set both parameters from one app
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Yes i know that. But see the whole point of asking this question is that Voltage Control reverts my frequencies back to stock..So say i try to set my cpu clock frequencies to 1600max-200min and then save it and set on boot once i reboot my phone it reverts it back to stock frequencies...Hence why i am currently using only No frills at the moment till this issue is fixed...And hence why i was wondering if i can undervolt with one app and overclock with the other
I would like manually create settings for when my CPU is overclocked and underclocked and I was hoping to find some help with this. I want my phone to underclock to roughly 800mhz - 900mhz when the screen is off, battery is bellow 20% and when the phone is above a certain temperature and overclocked to 1.1ghz at all other times. How would I go about doing this? I am new to tasker and there doesn't seem to be an option for CPU controll. If someone could advise me how to do it, rather than just direct me somewhere I can download a profile, I would appreciate it.
I am using a HTC Desire with VJ's CM 10.1 rom (performance control is not in settings as of now, using daemon to overclock)
Hello! I have an a32 5g and when I run intensive apps like emulators such as dolphin mmj and aethersx2, I can clearly see a drastic increase in performance when my finger are on the touchscreen. How can I ensure that my phone is running this fast all the time?
It's caused by "input booster", likely forcing CPU Freq at max_freq.
Try to tune CPU governor, e.g. set lower value for up_threshold.
Or you can use performance governor, but this will use max_freq all the time, draining battery very fast, except in deep sleep state of course.
I found Franco Kernel Manager and already have per app profiles set up to change when aether or dolphin launches. Thanks again!
*Completely fixed the problem btw!