my phone is sensation XE and now with Ordroid 1.8.3 ROM.
I heard that setcpu can help extend battery power life, but when I tested the setCPU on my sensation XE, I did not see that the battery life was extended at all. If you set underclock for the CPU when screen off, it became a little laggy when you get the screen on...in a word, I don't think it is useful for our daily use of the phone...
What you think and could you let me know your experience of using the setCPU?
Yes you are right if we underclock unlocking the phone become laggy.its because the max clock cycle will reduce to very low..i am using CPU tuner in which i increase the max clock rate while screen off little more..do one thing..increase underclock Max clock frequency little bit more..so that it will not slow during unlocking.....try it ..
Xperian using xda app
shyamjptpm said:
Yes you are right if we underclock unlocking the phone become laggy.its because the max clock cycle will reduce to very low..i am using CPU tuner in which i increase the max clock rate while screen off little more..do one thing..increase underclock Max clock frequency little bit more..so that it will not slow during unlocking.....try it ..
Xperian using xda app
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That's a good advice. Thanks, I will try it for sure...
BTW, is it really power saving to underclock the CPU when screen off?
yes it saves but when somebody calls then the alert will be late,probably vibrate first and after 3s backlight will be on and finally it rings!!!!
hit thanks if it helps!!
Related
I think Transformer suck on standby time. How do increase standby time?
ixus75 said:
I think Transformer suck on standby time. How do increase standby time?
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Not sure why yours is bad. My standby time has been excellent.
you can install setcpu and set up a screen off profile where you underclock the cpu when the screen is off. By default it's 216 min 1ghz max. so when my screen is off I have setcpu scale it down to 216/216 min max. You dont need much processing power when the screen is off
graffixnyc said:
you can install setcpu and set up a screen off profile where you underclock the cpu when the screen is off. By default it's 216 min 1ghz max. so when my screen is off I have setcpu scale it down to 216/216 min max. You dont need much processing power when the screen is off
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Thanks for posting your results. Are you on the stock kernel or a custom ROM/kernel?
How has your battery life been since you changed it to 216/216?
As the thread states, I obviously have a question about SetCPU and processor settings.
Is it better to have the processor underclocked and almost always using 100% to use programs, or it better off to overclock and have more processing power without using 100% or close to that mark.
And what would be more beneficial for battery life.
Edit: And if mods could move this to Q&A. Clicked the wrong forum.
Thanks,
Cyanide
Cyanidex00 said:
As the thread states, I obviously have a question about SetCPU and processor settings.
Is it better to have the processor underclocked and almost always using 100% to use programs, or it better off to overclock and have more processing power without using 100% or close to that mark.
And what would be more beneficial for battery life.
Edit: And if mods could move this to Q&A. Clicked the wrong forum.
Thanks,
Cyanide
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Actually we could use some hard evidence regarding this. Theories are theories, but actual experience is golden. Maybe you could try some various processor settings are report back?
Well, before I posted this I was using 245/886 underclocked with 245/245 screen off profile. At the end of the day I had an average about 75-80% percent battery life with pretty moderate to heavy usage.
I'm current using 245/1574 overclocked and will report back, with same screen off profile.
And yes, I did wipe battery stats before I started this.
Cyanidex00 said:
Well, before I posted this I was using 245/886 underclocked with 245/245 screen off profile. At the end of the day I had an average about 75-80% percent battery life with pretty moderate to heavy usage.
I'm current using 245/1574 overclocked and will report back, with same screen off profile.
And yes, I did wipe battery stats before I started this.
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Cool, thanks for that info. Are you finding that forcing a 245 mhz screen off speed is impacting any apps running while your screen is off (e.g. music playing apps)? A couple of weeks ago I tried forcing the screen off at 122 mhz to see if that would help battery life, but I had big problems with music apps stuttering. I didn't play around with the speeds to see if raising the forced minimum to 245 would have fixed the problem. Some kernels advertise as a feature "Max speed - screen off 576MHz" or some other speed, but I don't know if it needs to be that high or not, for app stability.
I personally haven't tried any music or apps running while screen is off, I'll give it a whirl when I get home from work.
I know this obviously will vary from phone to phone, and how the user uses the phone. I'm pretty moderate to heavy usage daily. Hopefully maybe we can compile some data on what works for people.
I have my screen off profile set at 245 and have no problem streaming music from my SD card with the screen off. When streaming from the cloud, I sometimes get a very long pause between songs that isn't there with the screen on. I will try raising my screen off speed to see if that changes anything.
Sent from my Desire HD using XDA Premium App
henrybravo said:
Cool, thanks for that info. Are you finding that forcing a 245 mhz screen off speed is impacting any apps running while your screen is off (e.g. music playing apps)? A couple of weeks ago I tried forcing the screen off at 122 mhz to see if that would help battery life, but I had big problems with music apps stuttering. I didn't play around with the speeds to see if raising the forced minimum to 245 would have fixed the problem. Some kernels advertise as a feature "Max speed - screen off 576MHz" or some other speed, but I don't know if it needs to be that high or not, for app stability.
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I noticed this yesterday. My screen off is also 245. My music stuttered, but only once (and it was fairly brief).
I raised the screen off speed to 368 and have not had any sputtering or long pauses between songs, even when streaming from the cloud.
Sent from my Inspire 4G using the power of the dark side.
biglittlegato said:
I raised the screen off speed to 368 and have not had any sputtering or long pauses between songs, even when streaming from the cloud.
Sent from my Inspire 4G using the power of the dark side.
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Good to know, thanks!
Cyanidex00 said:
As the thread states, I obviously have a question about SetCPU and processor settings.
Is it better to have the processor underclocked and almost always using 100% to use programs, or it better off to overclock and have more processing power without using 100% or close to that mark.
And what would be more beneficial for battery life.
Edit: And if mods could move this to Q&A. Clicked the wrong forum.
Thanks,
Cyanide
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Click to collapse
I use SetCPU at 460/1152 brazilianwax, screen off 122/537 conservative and have good battery life and no issues when playing music w/ screenoff....
Overclocking is almost guaranteed to worsen battery life compared to say if it was at stock 1 ghz or a little less.
With a governor like on demand, its gonna scale from the lowest to to highest allowed as soon as it gets some load on it, eg from 245mhz to whatever Max is (1017, 1075, or 1920 etc), without stopping in between.
Even conservative with fast scaling will probably scale close to Max clock speed pretty quickly under load, so theoretically this should be a /little/ better for battery than on demand, but will not seem as fast and could possibly make the phone seem more laggy. Smartass is very similiar to conservative as it scales depending on a preset % of CPU load. If its set to 70%, when CPU reaches 70% load, it scales to next frequency, when that frequently hits 70% load, its scales again. The version of the on demand governor most of us have in out kernels is the fastest scaling option, which goes from min CPU - straight to max
Hey guys,
I was playing around with SetCPU last night and I was wondering - do the default kernels scale the frequencies based on need or do they always sit at 1.3 or 1.56 ghz, depending on whether it's the original or the XE?
just curious, i've always wondered this
thanks,
zuka
Generally CPUs will work on a scale process, if they did not, you would notice your phone would he consistently hot and overheating from the constant maxed out use of your CPU. the controllers will undervolt your CPU (essentially lowering the voltage passing through) to save battery life and some will even act as a governer to prevent your CPU from getting too hot or maxing out and overheating your phone.
Sent from my HTC Sensation XE with Beats Audio using XDA App
Right so my phone can get pretty hot some times and I was just wondering if I undervolt it will it reduce the heat of my phone?
Also how much difference does UV actually show
It can't, because you can undervoltage not much or your phone won't be stable anymore.I think the easier way is to downclock your cpu speed.
likuku said:
It can help in term of technical, but in actually at the rate you can see the different of it.I don't think your phone will still stable or functional.
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That's really hard to understand what you're trying to say...
Sent from my HTC Sensation 4G using XDA App
likuku said:
It can't, because you can undervoltage not much or your phone won't be stable anymore.I think the easier way is to downclock your cpu speed.
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Galaxa12 said:
That's really hard to understand what you're trying to say...
Sent from my HTC Sensation 4G using XDA App
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He means that you can use an app like SetCPU to underclock or lower the clock frequency of your phones CPU, this will leave you a slower but cooler phone.
yes, if you undervolt you reduce cpu "power consuption" as equally as how many volt you decrese.. but.. if you undervolt too much, you lose cpu stability, so, if you undervolt you have to underclock, the same for overclock, if you overclock you may overvolt
it's different for all peoples, some users could have a better cpu (with less impurity), it can be overcloccked better with less overvolt, some can have a bad cpu chip, it means they have to overvolt so much for a little overclock
i have a sensation normally with -75mV undervolt and stock clock, it's stabe, so, am i lucky?
Temperature is a function of voltage + clockspeed. It is recommended you stay at 1.2ghz for good balance b/w performance, temp, and battery consumption.
To easily find your optimal voltage threshold, globally undervolt in stages of 12.5mv until your phone because unstable. Then increase it by 1 stage and that is the optimal voltage your phone should be running at.
Of course you can even go as far as tweak voltages at different clock speeds. Usually there is much more room to UV the lower clocks (192 and 384mhz around 800 or 812.5mv) than the higher clocks.
Hope this helps
iba21 said:
yes, if you undervolt you reduce cpu "power consuption" as equally as how many volt you decrese.. but.. if you undervolt too much, you lose cpu stability, so, if you undervolt you have to underclock, the same for overclock, if you overclock you may overvolt
it's different for all peoples, some users could have a better cpu (with less impurity), it can be overcloccked better with less overvolt, some can have a bad cpu chip, it means they have to overvolt so much for a little overclock
i have a sensation normally with -75mV undervolt and stock clock, it's stabe, so, am i lucky?
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Getting a Poco x3 pro soon and thinking about undervolting could you add me on discord and help me? If so add Gokn#4488
i aleary set cpu to max 1.8ghz and min 1.6ghz how to st it?? i did try to set it too 1.8mina nd max but my phone hangs and powerd-off!!! how to set it?!
Hey. I wouldnt recommend your current srtup at all unless you want horrible battery life and massive amounts of heat however i sont have an answer for your predicament, try using another app with the same function?
Sent from my GT-I9100 using XDA
listen to me. set it like I say:
max frequency 1512
min frequency 384
governor interactive
go to profiles and create a new profile. set:
screen off
max 432
min 192
governor conservative
priority 100
this way you have a good performing phone and with screen off a power saving profile. with this configuration I have 15 hours battery (enough for a day) of mid use...with data activated and live wallpaper
Nice stats ! I'm going to try that!
Sent from my Sensation 4G using xda premium
Some phones can handle higher frequency then others if your phone can't go over 1.8 well there is nothing you can do..
Swyped From My Sensation.
I SET IT TO this But anyway i don't care battery life
Dont OC much
dude that's friggin gih frequency's. Dont push it too hard, it'll do no good to the processor. Besides, what do you need that kind of power for ? Runing Crysis ?