Related
http://forum.xda-developers.com/showthread.php?t=1297619
Has anyone tried this?
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akira02rex said:
http://forum.xda-developers.com/showthread.php?t=1297619
Has anyone tried this?
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
Completely different architecture, and our device has no problems hotplugging in the second core when needed. If anything, it fires up the second core TOO soon and eats battery. Which is why airghi has a ton of patches that affect when CPU1 gets onlined... I've been working on cherry-picking some of them already.
Actually, those tweaks won't even work when the kernel is handling hotplugging of the second core.
I monitored the cores with system panel and noticed the second core comes alive just by touching the screen.
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akira02rex said:
I monitored the cores with system panel and noticed the second core comes alive just by touching the screen.
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Click to expand...
Click to collapse
Yup, as I said - it tends to fire up a little too rapidly.
The second core being enabled actually saves battery life. Differences between voltage and frequency (clock speed) are not linear, so by using two cores at 250mhz it uses less power than one at 500mhz. Using two cores is a good thing.
What's the most battery friendly kernel?
I'm using nymphetamine.. what about you?
Sent from my GT-I9300 using XDA
In order to determine this one must flash all kernels and test each of them with the same ROM for a minimum period of 24 hours and then when they have finished that post their results.
For the record im using Franco kernel.
No doubt. Insecure kernel
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I'm using postinthewrongsection kernel.
It's the ****.
Smh...
Seriously, nobody can answer this question and yet it is still asked 20 times a week, best rom, best kernel, best modem, whatever.
It's completely subjective!!
What is good for you might be **** for someone else.
As jonny68 said already, try them out.
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nodstuff said:
I'm using postinthewrongsection kernel.
It's the ****.
Smh...
Seriously, nobody can answer this question and yet it is still asked 20 times a week, best rom, best kernel, best modem, whatever.
It's completely subjective!!
What is good for you might be **** for someone else.
As jonny68 said already, try them out.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
I haven't seen that, where can I download the postinthewrongsection kernel?
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Thread closed.
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brian6685 said:
I haven't seen that, where can I download the postinthewrongsection kernel?
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Click to expand...
Click to collapse
LOL!!!
Sent from my GT-I9300 using XDA
Tbh i would recommend any custom kernel that allows you to undervolt, i.e Siyah
i currently have my phone running 100mv below stock and my battery life is better than it was stock
Uv is useless in s3 seriouzly. How much can u save.
Sent from my GT-I9300 using xda premium
Well think about it, 4 cores consuming 1400 millivolts each.
Undervolt by 100 millivolts and you have saved the equivalent current of 400 millivolts (100 per core).
Thats close to a third of the total consumption of one stock core.
Sent from my GT-I9300 using xda premium
Undervolting is pointless unless you are planning on overclocking and want to reduce heat.
Battery savings from Undervolting are about 2-3%
This is insignificant and isn't worth the potential instabilities.
Plus it's not even a big consumer of power, The power the cpu uses is dwarfed by everything else in the phone.
Sent from my GT-I9300 using xda premium
wong section. please ask Q in Q&A subforum
nodstuff said:
Undervolting is pointless unless you are planning on overclocking and want to reduce heat.
Battery savings from Undervolting are about 2-3%
This is insignificant and isn't worth the potential instabilities.
Plus it's not even a big consumer of power, The power the cpu uses is dwarfed by everything else in the phone.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
The CPU is still the largest consumer of power unless you have extremely bright colours showing on the screen. Plus the phone can be undervolted very far below stock settings as it is, so savings should be more than what you quoted. For gaming I'd say my mali patch would bring quite some advantage in terms of power, since the CPU lock is gone and ASV scaling on the GPU can actually take place now, Netarchy already included that into Ninphetamin.
woshiahboi said:
Thread closed.
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Click to collapse
lol.. how'd that work out for ya
AndreiLux said:
The CPU is still the largest consumer of power unless you have extremely bright colours showing on the screen. Plus the phone can be undervolted very far below stock settings as it is, so savings should be more than what you quoted. For gaming I'd say my mali patch would bring quite some advantage in terms of power, since the CPU lock is gone and ASV scaling on the GPU can actually take place now, Netarchy already included that into Ninphetamin.
Click to expand...
Click to collapse
Somewhere on XDA I've been reading about some1 testing high (nearly max) voltages against as low as possible voltages (but if I remember correctly it has been a single core CPU). His result of this test was that even with such extreme voltage differences he was not able to save one percent of battery.
While I'm not too much into CPU voltages and undervolting I can't say anything about it for sure. But I'll be looking for that article...
swent said:
Somewhere on XDA I've been reading about some1 testing high (nearly max) voltages against as low as possible voltages (but if I remember correctly it has been a single core CPU). His result of this test was that even with such extreme voltage differences he was not able to save one percent of battery.
While I'm not too much into CPU voltages and undervolting I can't say anything about it for sure. But I'll be looking for that article...
Click to expand...
Click to collapse
I think I know what thread you are talking about and I completely disagree with those findings, at least on the S2 I did proper measurements myself with -100mV on various frequencies and the power advantage was almost equal to the CMOS power formula f*V² on full load applications. I advise people to stop comparing such articles from different architectures as the Snapdragons or the OMAPs as they have different types of power saving states which influence the measurements greatly. The Exynos is relatively "stupid" in terms of lower power states and relies heavily on DVFS scaling so voltage brings a greater effect on the dissipation.
hefonthefjords said:
Well think about it, 4 cores consuming 1400 millivolts each.
Undervolt by 100 millivolts and you have saved the equivalent current of 400 millivolts (100 per core).
Thats close to a third of the total consumption of one stock core.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
If you're so concerned with volts per core. Buy the North American version and run it on 2g lol
Sent from my GT-I9300 using Tapatalk 2
Yeah well, I'm sorry if I complicated things. Just thought it's worth pointing out.
For anyone still interested: here
Probably you're right, as I said... can't argue with any of it and hopefully no1 takes my dangerous semi-knowledge as reference.
AndreiLux said:
I think I know what thread you are talking about and I completely disagree with those findings, at least on the S2 I did proper measurements myself with -100mV on various frequencies and the power advantage was almost equal to the CMOS power formula f*V² on full load applications. I advise people to stop comparing such articles from different architectures as the Snapdragons or the OMAPs as they have different types of power saving states which influence the measurements greatly. The Exynos is relatively "stupid" in terms of lower power states and relies heavily on DVFS scaling so voltage brings a greater effect on the dissipation.
Click to expand...
Click to collapse
Well you learn something new every day! Thanks Andreilux :thumbup:
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swent said:
Yeah well, I'm sorry if I complicated things. Just thought it's worth pointing out.
For anyone still interested: here
Probably you're right, as I said... can't argue with any of it and hopefully no1 takes my dangerous semi-knowledge as reference.
Click to expand...
Click to collapse
This is the same study I saw while I was using nexus s.
Tbh I completely ignored the fact that it was single core and different architecture when applying that info here. Oops.
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Is there any app that can turn off cores manually on the S3? 2nd core doesn't work and Cpu sleep seems very useless because I can't turn off cores while actually using my phone. An app like 2nd core for a quad core cpu would be greatly appreciated.
Thanks.
Sent from my GT-I9300 using xda app-developers app
pegasusq (the scheduler) doesn't turn cores on and off based on whether the phone's screen is on, but based on the CPU usage.
So it actually does everything you need by itself; if it's sitting idle it will turn off cores, whenever you need the horsepower it turns them back on.
Siyahkernel with Extweaks allows you to force it down to 2 or 3 cores, however I wouldn't do it. Rather play with ExTweaks to have it turn the other cores on when the load is higher.
If you don't want to use the extra cores, why didn't you just buy a galaxy s2 instead?
d4fseeker said:
pegasusq (the scheduler) doesn't turn cores on and off based on whether the phone's screen is on, but based on the CPU usage.
So it actually does everything you need by itself; if it's sitting idle it will turn off cores, whenever you need the horsepower it turns them back on.
Siyahkernel with Extweaks allows you to force it down to 2 or 3 cores, however I wouldn't do it. Rather play with ExTweaks to have it turn the other cores on when the load is higher.
Click to expand...
Click to collapse
Yeah but on my S2 I found that using 2nd core and turning it to single core usage it would give almost the same performance if I just boosted cpu by 200mhz. So do I need the siyahkernel or is there a core turn-off app for ninphettamin kernel?
Sorry for late reply I was abroad.
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krico said:
If you don't want to use the extra cores, why didn't you just buy a galaxy s2 instead?
Click to expand...
Click to collapse
I had the s2 but it feel in the toilet so GTFO?
Cheers.
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gjunki said:
I had the s2 but it feel in the toilet so GTFO?
Cheers.
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Click to expand...
Click to collapse
it was a legitimate question mate, no need to snap. On topic, the phone really should do that on its own and handles all the processes just fine. I don't think youd even WANT to have to manually change there core usage, that's a hassle. I'm sure there are plenty of great custom kernel s as the previous posts have mentioned that improve off of stock greatly though
Sent from my SPH-D710 using xda app-developers app
There is no need for installing anything that enables or disables cores, let android take care of that. Not all cores will be initiated when mailing, texting or calling. Only when they have to. It`s like using these stupid task managers that mess up android task management. Let it go unless you know what you are doing. No disrespect but only noobs come up with these ideas.
Pegasusq does all the work, users need not apply. (Seriously)
If you need to ask this question then you need to leave the system alone.
Stick to playing games
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Bumping here, but wow. Since when did XDA disencourage modding and developing?
MaXmeOliver said:
Bumping here, but wow. Since when did XDA disencourage modding and developing?
Click to expand...
Click to collapse
Custom Kernel. Limit cores and problem solved.
I use Perseus and Siyah with STweaks.
gjunki said:
Is there any app that can turn off cores manually on the S3? 2nd core doesn't work and Cpu sleep seems very useless because I can't turn off cores while actually using my phone. An app like 2nd core for a quad core cpu would be greatly appreciated.
Thanks.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
If you use a kernel with init.d suport you can flash this zip in the recovery.
It disable 3 core's when the screen is off.
Only for JB rom's!!!!
This application works for me https://play.google.com/store/apps/details?id=com.iamaner.CoreDisabler
STweaks - Siyah Kernel
Siyah Kernel will do the job with STweaks.
The last update for SGS3 GT-I9300:
http://forum.xda-developers.com/showthread.php?t=1709686
I bought the game. Btw
When I play the game, my device heats up and just wondering if there is a app for showing the CPU temp. And what is the safe zone for the CPU? But I really need that app its not only mc4 but that my main question. I played for 2 hours straight, ended up with 12% battery and the phone felt very hot.
EDIT: for anyone wishing to find out their CPU temp, buy SET CPU and place the widget on your homescreen.
Sent from my GT-I9300 using xda app-developers app
These games are really GPU intensive so my bet is you slow down your gaming. I mean take breaks from time to time. App, I don't know any but you may find it and it may need root. Plus do you have a case on? If yes then it is one of the reasons why your phone is heating up so much. Can you also specify the position where the Phone feels the hottest.
Hit Thanks if I helped you.
Taimur Akmal said:
These games are really GPU intensive so my bet is you slow down your gaming. I mean take breaks from time to time. App, I don't know any but you may find it and it may need root. Plus do you have a case on? If yes then it is one of the reasons why your phone is heating up so much. Can you also specify the position where the Phone feels the hottest.
Hit Thanks if I helped you.
Click to expand...
Click to collapse
mine heats up from bottom
Taimur Akmal said:
These games are really GPU intensive so my bet is you slow down your gaming. I mean take breaks from time to time. App, I don't know any but you may find it and it may need root. Plus do you have a case on? If yes then it is one of the reasons why your phone is heating up so much. Can you also specify the position where the Phone feels the hottest.
Hit Thanks if I helped you.
Click to expand...
Click to collapse
my phone heats up in the bottom right. I don't use a case, i am fully rooted and have a custom rom. i don't have any way to read what temperature my phone is heating up to but at a guess, i would say around 50 C or something i don't know My old s1 actually plays the game smoother than my s3!!!! i think the heat is throttling it. i haven't overclocked my phone.
The processor is at the bottom so it will definitely heat up there.
The best thing you can do is to take a break when playing for a long time. Don't charge when playing, turn power saving off when playing (works for me).
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kofiaa said:
The processor is at the bottom so it will definitely heat up there.
The best thing you can do is to take a break when playing for a long time. Don't charge when playing, turn power saving off when playing (works for me).
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Click to expand...
Click to collapse
never have power saving on! and never charge my phone while playing.
paintball23456 said:
never have power saving on! and never charge my phone while playing.
Click to expand...
Click to collapse
Knowing gameloft, the game is probably not optimized.
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I'm having no trouble playing MC4 for many hours.. Charging just makes a little warmer than it normally would be. Something happened one time when it went really hot, but cooling it down and reboot, and nothing happened ever since. I'm pretty sure there's a monitoring widget app on play store, but there's a menu in SetCPU that shows current battery level and temperature.
Omega v34 with Siyah 1.8 kernel. CPU OC 1.6GHz and UV around 100~150mv for each frequency. GPU OC to 600MHz no UV.
kofiaa said:
Knowing gameloft, the game is probably not optimized.
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Click to expand...
Click to collapse
No sh!t, gayloft basically hate android Nova 3 has better graphics then mc4 and that runs buttery smooth and doesn't make me heat up. Gayloft are simply apple fanboys. Even though android has more downloads a hour for mc4
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xcly said:
I'm having no trouble playing MC4 for many hours.. Charging just makes a little warmer than it normally would be. Something happened one time when it went really hot, but cooling it down and reboot, and nothing happened ever since. I'm pretty sure there's a monitoring widget app on play store, but there's a menu in SetCPU that shows current battery level and temperature.
Omega v34 with Siyah 1.8 kernel. CPU OC 1.6GHz and UV around 100~150mv for each frequency. GPU OC to 600MHz no UV.
Click to expand...
Click to collapse
o can you please post your UV settings?
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Hope this shows. I used setcpu to set this. Stweaks to oc gpu up to 600mhz
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xcly said:
Hope this shows. I used setcpu to set this. Stweaks to oc gpu up to 600mhz
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Click to collapse
thanks! i just got set CPU and i set them in and BAM! phone won't get hot! also the widget has cpu temp! YAY! thanks mate!
Glad everything's sorted
Add [SOLVED] in the title so people know.
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xcly said:
Glad everything's sorted
Add [SOLVED] in the title so people know.
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Click to expand...
Click to collapse
yep will do, just a few last things, i modified the UV a bit. My phone started to crash alot so i changed them a bit. for 3 hours of gaming my CPU went up to 50C still kinda warm but hey, it quadcore. to keep it at 30C or 24C idle you would need a water cooler. LOL
Ah yeah. My settings are a bit low.. Stable enough but hey every device is different. Rarely felt my battery warm to the extent I go oh it's hot. Good luck with mc4.
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Is it possible that force gpu rendering,in developers settings, may heat up a device faster while playing, rather than keeping it disabled?
I just wanted to ask people because many kernels force 1.15 GHZ frequency and I wanted to ask people what do you think about it,is it safe or not and did anyone do stress test with SetCPU and is phone overheating with it.
Thanks,XperianPro.
It can do damage after a certain time. If you have it set for a long time on that frequency it will overheat! It is safe but as long as you don't use always use it. You should use it only to speed up some tasks! There is a reason why they have chosen not to set it as max frequency on stock rom.
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Andrewasth said:
It can do damage after a certain time. If you have it set for a long time on that frequency it will overheat! It is safe but as long as you don't use always use it. You should use it only to speed up some tasks! There is a reason why they have chosen not to set it as max frequency on stock rom.
Sent from my ST25i using xda app-developers app
Click to expand...
Click to collapse
the same ideal with u, i dont think it wll be safe for a long -time using.
I think Your CPU will be damaged when u used 1.15Ghz for a long time day to day
if the voltage used for getting 1.15ghz is the same as 1.0ghz then there is no difference...any heating up will be a minimal increase over the stock, if any
if voltage is higher...then i would imagine it would have an affect after some time as others stated
15% overclock is a joke, my Galaxy Mini was overclocked over 40% (from 600MHz to 864MHz, but i used 800MHz almost all the time), was hot like hell and still works fine now after almost 2 years and shows no signs of stopping
Unless you want your phone to last 20 years, YES, 1.15GHz is perfectly fine by me.
domcale said:
15% overclock is a joke, my Galaxy Mini was overclocked over 40% (from 600MHz to 864MHz, but i used 800MHz almost all the time), was hot like hell and still works fine now after almost 2 years and shows no signs of stopping
Unless you want your phone to last 20 years, YES, 1.15GHz is perfectly fine by me.
Click to expand...
Click to collapse
thats because Galaxy mini was Downclocked by samsung
other samsung devices wich have exactly the same cpu gpu are 800mhz at stock
and they can be ocd to 970MHz
galaxy mini can run those 800 mhz freqs easily because they downclocked the device
Sent from my S500 using xda app-developers app
SpaceCaker said:
thats because Galaxy mini was Downclocked by samsung
other samsung devices wich have exactly the same cpu gpu are 800mhz at stock
and they can be ocd to 970MHz
galaxy mini can run those 800 mhz freqs easily because they downclocked the device
Sent from my S500 using xda app-developers app
Click to expand...
Click to collapse
That CPU on that board was designed to run at 600MHz, so you can't call it a downclocked CPU. Galaxy Ace and Mini had the same chipset, but the CPU itself wasn't completely the same. Not all Galaxy Minis where able to go 800MHz+
Same could be said for our Xperia U, Galaxy S2 has a dual-core Cortex A9 CPU running at 1.2GHz, so does that make our CPU downclocked? Ofcourse it doesn't, because the SoC is completely different, although the cores might be the same.
SpaceCaker said:
thats because Galaxy mini was Downclocked by samsung
other samsung devices wich have exactly the same cpu gpu are 800mhz at stock
and they can be ocd to 970MHz
galaxy mini can run those 800 mhz freqs easily because they downclocked the device
Sent from my S500 using xda app-developers app
Click to expand...
Click to collapse
I have some Questions
How can u call it a downclock when it supposed to be 600 mhz as I know
And why could Samsung downclock the phone it is better to make it 800MHZ then
I think overclock is different between all chipset
Just like snabdragon and and our ****tyThor cpu
And sorry for my English
Mtakween said:
I have some Questions
How can u call it a downclock when it supposed to be 600 mhz as I know
And why could Samsung downclock the phone it is better to make it 800MHZ then
I think overclock is different between all chipset
Just like snabdragon and and our ****tyThor cpu
And sorry for my English
Click to expand...
Click to collapse
the phones with same cpu are all running 800mhz at default but because mini and fit where low end phones they downclocked the cpus
so the people who wanted faster phone buyes phone with more mhz
Sent from my S500 using xda app-developers app
SpaceCaker said:
the phones with same cpu are all running 800mhz at default but because mini and fit where low end phones they downclocked the cpus
so the people who wanted faster phone buyes phone with more mhz
Sent from my S500 using xda app-developers app
Click to expand...
Click to collapse
That's how you make money! :sly:
Sent from my ST25i using xda app-developers app
domcale said:
15% overclock is a joke, my Galaxy Mini was overclocked over 40% (from 600MHz to 864MHz, but i used 800MHz almost all the time), was hot like hell and still works fine now after almost 2 years and shows no signs of stopping
Unless you want your phone to last 20 years, YES, 1.15GHz is perfectly fine by me.
Click to expand...
Click to collapse
B**** please, my Galaxy 3 was overclocked from 667 MHz to 1400 MHz and it still works
Sent from my Xperia Sola using Tapatalk 4 Beta
it is safe enough, my old xperia play was running at 1.8 ghz all the time, and it just works fine, till the screen broke (dropped the phone)
that cpu was designed to run at 1,0 ghz.
nickholtus said:
it is safe enough, my old xperia play was running at 1.8 ghz all the time, and it just works fine, till the screen broke (dropped the phone)
that cpu was designed to run at 1,0 ghz.
Click to expand...
Click to collapse
Well my old live with walkman worked to on 2.0 GHz but I could feel overheat remember that this is Novathor not Qualcomm.
So anyone brave enough to test phone with stresstest on 1.15 GHz for about two hours?
Sent from my Xperia U using xda app-developers app
There are kernel that boost cpu to 1.3 ghz... so 1.15ghz is safe for me
I read somewhere, that max safe frequency for NovaThor U8500 is 1,2 Ghz. So 1,15 Ghz should be safe enough.
Xperia [email protected] 2
It's safe i'm using my phone for almost 2 weeks at 1,15 Ghz and not a signle problem, not even overheat! I say it's 99.9% safe.
I am using 1.15ghz from about 3 months and no problems at all
I have been using 1.15 ghz for months now and I play games quite frequently and it has been safe and stable for me
I Think that the Novathor U8500 in focus, can be easly OC to 1.15 GHz without having particular trouble in fact of stability or hw issues, as it is capable of a theorical max of 1.2 GHZ ( as seen in some websites on fast google search "NovaThor U8500 max freq" )
.Hoping this is real, remember that this may affect nor the voltage but the steps that the governor has to do before reach the 1.15 GHz. Some good kernel, as most of the JB Designed kernel are set by default to max 1.15GHz.