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First I am aware that overclocking is not "safe" and all that kind of stuff
However for some reason I am unable to OC my SGS2 and run the phone on a steady way.
I have tried several ROMs (stock and custom) with different kernels and OCing apps with no avail.
I am not even able to run at 1.4Ghz or 1.6Ghz without having my phone reboot or hard lock on me.
Is there a particular or recommended setting (most successful combination) that anyone out there can suggest me trying?
Sometimes it will hang under heavy gaming but sometimes even browsing app and regular stuff will cause the phone to reboot or lock. If I work with no OCing at all then everything is fine and dandy.
Thanks, you can see my current configuration @ my signature.
Sounds like a very temperamental cpu. Currently I have the same setup you do and have never had issue with 1400mhz or 1600mhz. Though I usually leave mine at 1200mhz. What app are you running when it hangs?
And just as important, do you have alot running in the background? The modified touchwiz launcher unnamed comes with can be enabled to show a red dot next to the apps that have been opened and are in the background.
If you could list the apps with the red dots.
Sent from my páhhōniē
gr8hairy1 said:
The modified touchwiz launcher unnamed comes with can be enabled to show a red dot next to the apps that have been opened and are in the background.
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It does? That sounds more like one of the themes that includes TW4.5.
Not all CPUs can overclock - there's a reason it was sold as a 1.2 GHz chip.
Well as I've mentioned before, it could even hand when browsing through my apps menu, browsing the gallery, playing a game (non in particular) and the funny part is that the phone is not even hot to touch.
What I know for sure if that if no OC = no hangs, no reboots.
I do have the App monitor widget that comes with the stock ROM and currently using it on UnNamed 1.3.1 and I only have Widget Locker App. However I have try closing it and still will happen.
Not sure if maybe this CPU is somehow having an issue that makes it unstable as soon as I OC it.
Entropy512 said:
Not all CPUs can overclock - there's a reason it was sold as a 1.2 GHz chip.
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Now that is new to me, I thought that all of them were OCable. Is there anyway to identify which can be or not OCed?
nope.. just by testing. it does have to do a little bit with the kernel and rom. the roms didnt originally have stable OC. i would assume that all of them do now. one thing you might try is giving them a little more voltage (just a little) at the higher clocks, but be careful. if you increase the voltage that means that you will sink more enery through the cpu and it will get hot quick. make sure you watch the temp.
i find that setcpu is less stable than the built in cm7 oc menu but cm7 doesnt have a voltage menu.
but on the same token... why OC? i can and i did but i dont need to... everything is like butter and i didnt see that huge a gain by OCing it anyways
tmckenn2 said:
nope.. just by testing. it does have to do a little bit with the kernel and rom. the roms didnt originally have stable OC. i would assume that all of them do now. one thing you might try is giving them a little more voltage (just a little) at the higher clocks, but be careful. if you increase the voltage that means that you will sink more enery through the cpu and it will get hot quick. make sure you watch the temp.
i find that setcpu is less stable than the built in cm7 oc menu but cm7 doesnt have a voltage menu.
but on the same token... why OC? i can and i did but i dont need to... everything is like butter and i didnt see that huge a gain by OCing it anyways
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I know, this Exynos processor is the best out there right now, forget about Qualcomm's Snapdragon on the Skyrocket. I am just trying to OC for the fun of it
Guti1977 said:
I know, this Exynos processor is the best out there right now, forget about Qualcomm's Snapdragon on the Skyrocket. I am just trying to OC for the fun of it
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Although it makes me wonder if the CPU could be having an issue, since it hard locks when attempting to.
Guti1977 said:
Although it makes me wonder if the CPU could be having an issue, since it hard locks when attempting to.
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have you ever overclocked PC CPUs? if you have spent much time doing that, then you would know that not every chip, even within the same model/family, will clock the same. take 2 CPUs, from the same batch, same model, with identical hardware tied to them. you will probably find that one clocks higher stable speeds than the other.
its very likely the proc in your phone just cannot handle the overclocks that the next person's could.
Like pirate said, no two pieces of hardware are identical. Sort of shows how much variance there can be in a manufacturing process. Id guess theres a few chips that come off the same line that arent stable at 1.2 ghz, but they dont make it to the devices, whereas one that can handle a higher clock will. (No sense tossing one that exceeds minimum requirements, thatd just be throwing good hardware away)
You could try nudgin the voltage up and seeing how it behaves, just use caution.
Sent from my SAMSUNG-SGH-I777 using XDA App
garyd9 said:
It does? That sounds more like one of the themes that includes TW4.5.
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My bad. You are correct.
Sent from my páhhōniē
To get mine to overclock to 1.4 and 1.6Ghz I had to actually INCREASE the voltage settings via Voltage control app. So my settings are: 1.6Ghz= 1475mV and 1.4Ghz=1325mV
Try those out and see if is better for you. I tried undervolting the higher voltages and would either lockup or reboot instantly until I tried adding voltages. So you may need to play with your settings to get it to work for you.
Sent From My KickAss ATT SGS2 SPORTING CM7
twiggums said:
Like pirate said, no two pieces of hardware are identical. Sort of shows how much variance there can be in a manufacturing process. Id guess theres a few chips that come off the same line that arent stable at 1.2 ghz, but they dont make it to the devices, whereas one that can handle a higher clock will. (No sense tossing one that exceeds minimum requirements, thatd just be throwing good hardware away)
You could try nudgin the voltage up and seeing how it behaves, just use caution.
Sent from my SAMSUNG-SGH-I777 using XDA App
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Yup, or if they want to sell a "premium" device with a higher clock rate, they will take the parts that test well at 1.4 and sell them as such - meaning parts rated 1.2 will be LESS likely to be overclockable if a device comes out with CPUs rated at 1.4 - like the Galaxy Note did.
Before, anything that could meet the requirements of stable at 1.2 was sold to any Galaxy S II - but now, the premium parts are going into the Note.
RockRatt said:
To get mine to overclock to 1.4 and 1.6Ghz I had to actually INCREASE the voltage settings via Voltage control app. So my settings are: 1.6Ghz= 1475mV and 1.4Ghz=1325mV
Try those out and see if is better for you. I tried undervolting the higher voltages and would either lockup or reboot instantly until I tried adding voltages. So you may need to play with your settings to get it to work for you.
Sent From My KickAss ATT SGS2 SPORTING CM7
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I am having the same issue as the original poster on my new GS2. I will have to try the settings you mention but would it be possible to do this and also apply /UV to the remaining lower (1000ghz to 200ghz) processor speeds and maintain stability?
Basically, i got this phone(GS2 i9100M) a week ago and found way too many problems that i cannot fix. So, why exactly does so many people like about this phone compared to other variant, e.g. GS2 T989 with snapdragon processor? I mean, my brother has the T989 and i also had it before too until i sold it to get this. It seems like i've been experiencing a lot of problem from this phone that does not really occur on the T989. The default music player is faulty which causes auto reboot, and the phone constantly heats up; even when viewing photos from the gallery! What attracted me to get this phone was people's opinion about the CPU and GPU also the gorilla glass, but i dont really notice a big differences in speed between the two phones. The T989 also doesn't heat up this much or this often. Feel free to share your experience people, and would appreciate if someone can offer me some advices on how to fix the heating up issues.
First, its better to talk n read at 9100 forum section but since im a 9100 user, ill share it here
Yes, on day one i got my 9100, it gets really warm even when not charging and got a lot worse when on charge. Its mostly the media scanning process which seems unstoppable on the earlier build when the SGS2 was released
I first noticed that its solved when using XXKG3 firmware and above. And also, undervolting to around 50mv reduces the heat too. A normal 9100 is capable of undervolting up to 175-200mv but it depends on phones are some silicones are made better and its not a constant result. What samsung made is setting the voltage at all the same safe level to avoid reboots. U have the option to undervolt it to reduce heat or even underclock to 1Ghz since 1.2ghz is quite overpowered and u want to conserve the battery and make it last longer.
Try Siyah kernel and learn to tweak using voltage controller and extweaks. There r guides given in SGS2 section here on XDA and it is well compiled.
Cheers
Sent from my GT-I9100 using xda premium
bershote Legiflature;
Thanks for your reply. I've posted in the wrong section by mistake. Someday I'd consider rooting the phone, but at the moment I don't want to take the risk because I'm still kind of new to smartphones and don't know much about it. What's your opinions on ICS? Do you think ICS OS release will solve most of these problems?
Hi,
Hope this is posted in the correct place :fingers-crossed:
I own a Sammy Galaxy Nexus and have had a play with various kernels. The two that I have had the most success are Franco and Trinity. I have always been able to run the higher GPU speed with Franco's kernels(512) but don't have the same results with Trinity's 537MHz speeds. I can over clock with Trinity's 384 kernels, but when I try with the higher GPU speed, I can't go over 1190MHz.
Could it simply be the 25MHz on the GPU is enough for my phone to get cranky and freeze when it feels like it? I just find it hard to believe that with that extra 25 my phone completely changes and can't run on even a little over clocking....
Thoughts?
Is it coz I have posted this in the wrong section that there are no replies?
Swiped on my Gnex
Yeah, you should post in the Gnex forums, where other people have the same device and have more knowledge on it.
Sent from my LG-C800 using xda premium
OK thanks!
Swiped on my Gnex
*********
I've read on several ROM forums that only certain apps utilize or dual cores. go to sys/devices/system/cpu/cpu1 there is a file there. When using one of the above said apps it populated cpu1 with freq folders etc, changes that one file from 0 to 1 enabling it. without one if these apps there is no freq tables for cpu1.
****my question: using Linux and cpu i ran speed tests. Over 70 tests in total. There is zero performance difference in using one app versus another versus cm performance cpu menu. I understand how it looks like two cores are only utilized from certain apps looking at the folders. However it does not change performance at all. Tests show same speed any way to control cpu. Also feels the same. Is there really a difference our is it monkey say????
Also in my tests i found using "VR" versus sio or noob or cfq to be the fastest. I didn't feel a difference however changing i/o setting.
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Their are claims that Intel’s internal handset testing has shown multi-core implementations running slower than single core, however they did not cite any particular chip. If you take a look a lot of handsets on the market, when you turn on the second core or having the second core there [on die], the [current] leakage is high enough and their power threshold is low enough because of the size of the case that it isn’t entirely clear you get much of a benefit to turning the second core on. In some of the use cases they cited, having a second core is actually a detriment, because of the way some of the software engineers have not implemented their thread scheduling properly.......
That being said, one could argue the concept that a single core chip, running a slight overclock, would produce a far better result, than a dual core application. But again, thread scheduling detracts from any governor efforts anyway...IMHO....g
Hum. I would have to agree then that in our case and in my tests dual core doesn't help nor hinder performance results but does appear to reduce battery life. Now these are my tests using two different programs to test performance and using combo of setcpu/system pro/Cm10 performance built in/Tasker to control cpu. I have done enough testing to know that on cm10 roms dual core, or so the sys files indicate, is of zero performance upgrade and appears to drain battery faster.
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Yes ...I agree with your findings.
I suppose it's safe too say then, when using the AOSP rom source, within it's normal configuration, that unless development is done beyond the current schedules, the stated performance is well ....overstated ??
Of course , CM is in a constant state of change, and I suppose that after they are finished with the functional repairs, they may focus more on the kernel.
I'd be very interested to see your same tests against another kernel, say flappjaxxx latest JB build.
I do know that he, and several other developers have made some great improvements to the source kernels, and although there will likely always be bugs present, after running my own evaluation of them, the governors are functional and do make at least a perceived difference.
But as you stated, albeit at the cost of battery life.
I choose not to overclock, as I feel that the marginal reward , as proven by your testing , and by testing from several reputable sources, is simply not worth the risk ...g
I agree Greg, i will test other kernels... Samsung ROM is probably the only one i won't test... I also don't overclock, i do under clock at work and screen off using Tasker for battery life. That does help greatly. I'll post back after testing different kernels tonight.
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troyolson92 said:
I agree Greg, i will test other kernels... Samsung ROM is probably the only one i won't test... I also don't overclock, i do under clock at work and screen off using Tasker for battery life. That does help greatly. I'll post back after testing different kernels tonight.
Sent from my SGH-I717 using xda premium
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Excellent....
And I suppose, since this is the Premier development site, that it would be of great value to the community if you could perhaps publish your results here ?
These aspects of the android OS have been of great interest to me for some time.
Without doubt, many other users would enjoy this information as well in forming their decision regarding roms, kernels etcetera.
Thanks to you, for your inspiring thread. I look forward to the forthcoming information ....g
Ok with out posting tons of pics i tested all available kernels (new). Results were the same. No real difference in single core versus dual core...
The following pics show how to know whether the second core is online or not and my results and how i tested this time around... I was more through the first time but results the same.
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troyolson92 said:
Ok with out posting tons of pics i tested all available kernels (new). Results were the same. No real difference in single core versus dual core...
The following pics show how to know whether the second core is online or not and my results and how i tested this time around... I was more through the first time but results the same.
Sent from my SGH-I717 using xda premium
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Click to collapse
I am posting pictures for first time hope this turns out.
What do you use to disable the second core? Read this with some interest. Would like to try this with ics Rom. With oc'ing fRom 1.56 to 1.72 i see a consistent jump of 300-400 in my antutu scores. Currently on flapjaxx ics b4.
I know it is just a score, but is your score indicative of the cm builds? It just seems really low.
Here is my 'stock 1.56 speed' with ondemand governor. Want to a get a single core sample.to compare with it.
How interesting ....
I can say that both of your posted results lead toward our initial assumptions, that indeed we are seeing a consistent draw against the systems cores with little or no improvement upon activation of the second core.
Some Time ago, shortly after my note arrived, I began some simple tests with low speed dual core activation. My thought process was simply this.
Slow speed dual core operation (both cores running in the 650mhz range ) would ideally produce a faster process response.
My initial results were favorable, as I had a noticeably quicker device during screen transitions, and even in several multitasking functions.
I even went so far as to create a small script to handle this function for me. I'm no developer, and ultimately I didn't possess the programming skills I needed to complete and implement my script into an actual, flash worthy modification. And based on what we are seeing here , the results provided would indicate that my attempt is flawed due to chip current leakage, if the cores are allowed to ramp to high, and perhaps even the use of improper source schedule interference.
I'm so busy these days, I simply haven't time to explore the low speed theory further at this point.
But perhaps with your test bench already set, a simple test using my concept could be carried out??
As we know, CPU [current] thresholds are plagued by voltage bleeding at maximum CPU frequencies, but the thought has just occurred to me that [current ] bleeding is highly controllable when the CPU is driven at lower voltage inputs. And too combine a reduced frequency with reduced voltage over a multiple core platform, could, or should balance the loss and equal the output levels.
Are you up for another test ??
If so ....I suggest the following parameters.
Core "0" at 600/700 MHz
Core "1" at 600/700 MHz
Governor at "interactive "
Voltage at "-24Mv"
Then we'll see if the theory holds water.
P.S. thanks gents, I'm enjoying the heck out of this thread ......g
Mad383max, look at your folders from my pics to tell if two cores are running. Typically on after market roms one core is running until you enable the second from other software like from my pics.
Will test at lunch. I like this lower voltage idea. If i were a betting man i would guess with speeds you proposed and two cores i would guess similar to higher results. Let's see....
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troyolson92 said:
Mad383max, look at your folders from my pics to tell if two cores are running. Typically on after market roms one core is running until you enable the second from other software like from my pics.
Will test at lunch. I like this lower voltage idea. If i were a betting man i would guess with speeds you proposed and two cores i would guess similar to higher results. Let's see....
Sent from my SGH-I717 using xda premium
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Agreed......
I'm excited to see the results....and thank you !!...g
I have to reflash ROM so pics might be a little awhile. I messed up some things and somehow lost my Google account. reflashing gapps and ROM didn't fix it.
Anyway results were 2600 something at 700 both cores underclocked 25... Slightly more than half of normal speed at slightly less than half clock speed... For kicks i tried 1.5 clock speed undervolted 75 (most my phone will go without lockups) and got 5k results. Best yet.
You are on to something. Less voltage = more speed. I now need to try single core undervolted. Give me couple hours for pics etc.. Got to get phone working with Google again and spend time with wife. She hates me on the phone.
Sent from my SAMSUNG-SGH-I717 using xda premium
No worries Troy. ...
Take all the time you need.....
I do appreciate the excellent testing you have undertaken. I know that the results are going to benefit the community.
And i am highly intrigued by your first run under the parameter set you've chosen...
It's leading down the exact path that i suspected. ..
I'll talk with you soon. ...g
A few additional items that I have failed to consider during my testing, could weigh heavily on our testing results and should be considered during testing.
They are, battery power levels, charger connection and type....(wall/PC), and rom power save levels.
I do know that the android OS will adjust itself during varying power levels, much like our setting the CPU to UC/UV settings, only on a much smaller scale.
I feel its important that we are able to control the input levels in the following way...
Battery to full charge, with no charger connection, and if the cable is needed we use a non powered port. Next would be controlling the rom power settings if the rom contains them, as found in most GB and ICS builds.
If these baselines are met, we should be able to greater rely on the mark scores we are seeing. These variables could explain why we continue to see so many peaks and valleys in scores when two users share the same builds, on like devices.....(speculation)..
Additionally, are we able to control the background processes to the extent, they will remain constant for testing?
Sorry for the rant.....Im just concerned about the ability to quantify our findings once testing is complete.
Ive started some tests on my end as well, and certainly do not want to give you the impression that I expect you to do all of the work.
After all, you did ask first....lol and I feel like Im dumping this effort into your lap.
And please forgive my pathetic punctuation in this post, as my keyboard of choice decided to fail tonight....g
Battery does effect performance greatly.... Also noticed none of the apps to test are very repeatable. Fluctuation seemed to be about 100.
Having issues up loading pics from phone, I'm away from laptop for a few days.
In the end i found -12 v single core to provide the best battery and performance that was equal to dual core. I tried over under voting many differences.... over voting did nothing, under voting a little made small preformance improvements. I believe some of fluctuations are related to app, battery, etc.... In the end it's too say dual core has no speed improvement. I would be cool to test an app that it's specifically for dual core. I am better off without the second core speed is same anyway, and battery is much better. There is definitely voltage leakage..
Let me know what y'all find in your tests....
Sent from my SAMSUNG-SGH-I717 using xda premium
Outstanding !!
I appreciate the hard work !!
So it seems we are better off using the note running a single core and about 12mv under volt.
And I'm of the belief that our second core is rather pointless...unless it can be proven that the second core is absolutely needed to perform a function.
And so far, I haven't found anything I use that requires activation of the second core.
I'll continue my tests, but the way it looks now, Intel is right, and Samsung pushed a dual core chip to this device for nothing more than a market share increase. As it is quite clear that the device does "not " need it to function well, and at a Very respectable speed.
Now we have a quad core version, and I highly question the motivation behind that move, beyond marketing as well.
These statements may offend some, and folks will certainly disagree, but if you want a great running device and great battery life, you need a single core chip ...IMHO ....g
Agreed Greg. Someone will get upset when they do thirty own tests and realize what we see, and what you said, good marketing by Samsung. Numbers don't lie and i did tests as controlled as possible. Even my battery shows in the picks... A true second useful core would have easily bested the single core results. Plus undervolting tella the bigger story...
I must say though. It had been very useful.. My battery life is so much better now!!!
For me the only true performance gain had been from v6 supercharger.
Sent from my SAMSUNG-SGH-I717 using xda premium
Fyi: same exact results using cm9 versus cm10. Neither ROM benchmarks faster than the other as of 9/16 cm9 and 9/15 cm10 builds. Dual core zero performance upgrade.
Tried quadrant again and result very up to 20% back to back so that app is useless to me.
Can someone try a Samsung based ROM. I'm curious add to a difference in roms. just use antutu benchmark and set cpu however you wish to whatever you wish just report cpu clock speed, type of test, and results
Sent from my SAMSUNG-SGH-I717 using xda premium
Out of town this week Troy, but i'm gonna bump it for ya...g
Hi guys,I have a question.how can I set my phone to dual core,so I can save my battery life? I'm on omega Aokp v4.2 and Syiah kernel.
I've tried to set it on Stweaks but when I get back in there it stays quad core by default..what I am doing wrong since I'm a noob?
Sent from something better than my pc
You missed section named "Galaxy S III Q&A", right? You must have.
Do you press Apply after you make a change in STweaks ?
BTW, it won't affect your battery life THAT much. Pegasusq knows how to manage the cores pretty good.
Actually Siyah Kernel doesn't work well with Stweaks at this moment. It's written on Siyah's website that most feature on Stweaks doesn't work.
So which would be the kernel that work with Stweaks? And yes, I've hit the button that says apply
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bcuraman said:
So which would be the kernel that work with Stweaks? And yes, I've hit the button that says apply
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I don't think any kernel works because Stweaks is Siyah's software. Since the new 4.1.2 lots of apps (kitchen) in many ROM doesn't work.
can you provide any link or article clearly confirming that dual core saves battery? i've read somewhere that it has a negative effect because the phone takes longer time to get to deep sleep
im not 100 % sure though, just learning
Hey just my two cents but on stock ROMs with stock kernel using the power save toggle really saves in the battery department.
Also I don't know what everyone is doing with their phones but my battery is great compared to previous phones, iPhone, one x, g2x etc....
sent from a galaxy far away
I don't have that for sure,that dual core saves battery,but in the stock rom,when you activate the power saving mode,it disables some cores or some features of it..so that's from where i get my thoughts... Besides that,I'm using a Aokp rom and despite the fact that it's blazing fast,it's an awesome experience.but the (dis)advantage of taking the most out of the phone,doesn't give us enough profit of the battery.. What would you suggest so I could keep the Aokp and have the most of the battery?
Sent from something better than my pc