Here we got something special.When we turn on the force gpu rending we will get a fluctuation on game fps.If we turn it off it will be more smooth.Just try this on your phone.__my bad English__
It's known from long time now that force gpu rendering can cause problems in some games/applications.
yes needless thread. Mods please close it
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Just wondering if someone could give me the final word on this as I've done some searches and have heard mixed things. Should this be ticked? Is the number of apps left out there that might malfunction with it enabled so low as to make it worthwhile to keep it on?
And does it really make a difference on a phone that's already so powerful?
Thanks.
I can't say definitively that Force GPU Rendering option on will improve things.
I would say it would but there where be some apps that may crash because of this option
Also if your phone is not on 1.29...then Force GPU Rendering will not stay on (my One X is still on 1.28 and when I tick Force GPU Rendering, when I leave the Developer Options screen the option is unticked)
Ice cream sandwhich phones should run gpu rendering.
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Any more comments about force gpu rendering? And what about disable hw overlays? Does anyone about this? Someone somewhere said that it improved performance on his HOX.
In developer options, what does enabling force gpu rendering do? Id like to know pros and cons.
I'm trying it right now cause I read this post, I think it makes things look better/smoother when using apps. Not too sure tho
Edit: just give it a google I just read a pretty good explanation of it I'll probably just leave it on now unless something gets weird but sounds like everything will be better with it on less lag smoother
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I believe it forces the GPU (Graphics Processing Unit) to render things like transitions between menus, and what not.
Now I'm not sure if that's more power hungry, or bad for the device. But in my opinion, I believe this would be better than having the CPU render the transitions, because the GPU is designed for graphical rendering -- of course, there's the question of if the GPU sleeps while the phone isn't doing anything intense (gaming generally).
I hope that explains it!
ok. Figured out why perseus kernel ran like poo on my device. I noticed on all my 3d games and sometimes on my browser, there would be be occasional stutter or a slighr but noticeable fps drop leading to a jerky stutter performance. even on the tw launcher I would see it here and there. luckily this awesome device has split screen. So I was able to observe the cpu LIVE as it scales. I ran tons of benchmarks and observed the culprit. While the phone is pushing polygons the cpu down scales to fast and way to much. it would bounce from 1.8ghz to 600mhz constantly. When this aggressive down scale happens then you see the stutter. At least I do. So... Here's the fix. Open Stweaks and on CPU SCALING scroll down to FREQUENCY FOR RESPONSIVENESS. Set that to 1.2ghz or above. Done. enjoy your stuttering free performance. Will this impact your battery? Not much. It just keeps the cpu fast when it needs the power. Once you let go of touching the screen then it scale down to below 1.4ghz.
I think your "fix" may work but I don't think it is optimal. See Andrielux's original N7100 thread and you will see that he recommends keeping this parameter no higher than 600mhz because it causes issues above that. I think there are more direct parameters that can be changed regarding down scaling to fix your issue. You should post this on his thread to get his input as he is quite wise.
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yup. I kept an eye on it all day yesterday and with cpuspy I noticed my device was hanging allot of time at 1.2. makes sense. I'll play with it more today.
found a better setting change on stweak! You can leave everything on stweak at default and may change........
under CPU SCALING go to UP THRESHOLD AT FAST-DOWN and set that to 25%. Default is 95. Now using cpuspy I see all the clocks being used healthier compared to before where 1.2ghz was hogging up more. And the studder is gone. This makes the cpu hold 1.8. steady and not down scale when using 3d . try it and you will thank me.
Okay I can confirm it now. This is a good fix for the stuttering. my battery has not taken a hit at all. And it runs smooth. And to boot I'm getting a quadrant score on the 7600. this is the change.
under cpu scaling I changed UP THRESHOLD to 70%. UP THRESHOLD AT FAST DOWN to 20%. Under GPU I changed GPU MAX FREQUENCY to 800mhz. And it's UP THRESHOLD to 80%. Everything else is at stock. Now play with the voltage of the cpu to the lowest possible voltages. And you will be thankful.
Does anyone know the safe temperature envelope for the Tab S?
CPUTemp is the app I use to monitor mine.
https://play.google.com/store/apps/details?id=com.yanyan.cputemp
In the past I have disabled DVFS using Xposed to reduce CPU throttling without issue. However this morning my 10.5 started getting very warm and sluggish. I checked and the DVFS module was spiking temps to 90C. Eek, not good. I re-enabled DVFS and temps dropped to high 60s low 70s. Don't know why the DVFS thing suddenly started causing problems but 90C is way way too hot.
I believe the main culprit here may be the latest release of Dolphin Browser 11.2. All other browsers are running at about 65C but Dolphin spikes to 85C. Not good. Will report this.
So may not be DVFS at all but Dolphin.
Running one run of antutu benchmark and the cpu temp peaked at 86c. That's without disabled DVFS.
win81-64 said:
Running one run of antutu benchmark and the cpu temp peaked at 86c. That's without disabled DVFS.
Click to expand...
Click to collapse
Yep Dolphin is messed up. Huge temp spikes.
My SkyHigh kernel commit will answer your question
https://github.com/UpInTheAir/SM-T700-T705-Kernel/commit/ce1efd33185a5dcd2ad3d1cc989b23ee0153492b
CPU scaling decreased at 95 degC is normal and safe. Critical CPU temp at 110 degC
Not sure if this is the right thread to talk about it, but recently I flashed the 5.4 version of this kernel http://forum.xda-developers.com/showthread.php?t=2775998 and so far so good, it fixed the 4.4.2 S Pen problem. However, I've noticed that, when I use multitask mode (2 apps open at the same time stacked on top of each other), there is some light stuttering(?). Not laggy, but when I scroll it kinda stutters a bit. Strangely enough, this only happens during multitask mode, not if I have a lot of apps open in the background. This isn't the real problem though, the real problem is that the kernel seems to cause the S Note app to lag so much that it's almost unusable. Another problem i've found was that SOMETIMES when listening to music when the screen is off, the music lags so much that it's inaudible. Not often, though, and I dorn know what specifically causes it, other than the low GPU speed. The kernel specifically states this:
"GPU settings are:
Step0 54MHz = new Idle step = when in browser mode and no gaming this low GPU speed will help save power
Step1 266MHz
Step2 350MHz
Step3 533MHz = new speed foe step3 for better performance in drawing
Step4 700MHz = New OC speed for the better gaming performance
GPU settings are not editable and hard set in the kernel"
I'm taking a guess here but I think that the low, non editable GPU settings are causing the slowdowns.
Is there any way to somehow increase the GPU, even though it says that it's uneditable? Has anyone used this kernel before and found out how to fix it? Would downgrading to a lower version of the kernel fix the slowdowns? This is the only kernel I found that fixed the slowdown for my device, I can't really install a different one, but I can downgrade this specific kernel, which I think could fix it but I'm not sure. Are there any other fixes?