yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Android Development] R3dbeaver:
I installed the apk and placebo or not, less stuttering in TDKR and ShadowGun. Fps doesn't change but it doesn't choke as much when suddenly 10 people jump on my screen.

Just my 2c.
[Nexus 7 Android Development] bcvictory:
Just did a quick random test on a28. Bit different to what I normally do.

Wanted to squeeze out as much battery as I could.

I set it to 1.2 GHz, ondemand default.

I played a video in MX Player Hardware decoding on lowest brightness.

I only did it from 100 to 50% then doubled but I got:

10 hours 24 minutes.

I think that's pretty good. It's not laggy either.
[Nexus 7 Android Development] ace-user:
10 hours? that's amazing :eek:

Sent from both my sexy galaxy nexus and nexus 7 X)
[Nexus 7 Android Development] Metallice:
Yes.

You could also do this

su

mv /dev/random /dev/random_ori; ln -s /dev/urandom /dev/random

Much better way to do it but much less secure

Although it is still just confirmation bias. 99% sure. It is obvious based on the variability of effect for people.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] Allosaur:
Wish it was magic smoke - that would be much more battery friendly. My own experience is that randomness is still abundant. :D
[Nexus 7 Android Development] ace-user:
metallice, is GPU 3D scalling ON by default?

Sent from both my sexy galaxy nexus and nexus 7 X)
[Nexus 7 Android Development] Keitaro:
According to TricksterMod, GPU 3D scaling is on by default in both a27 and a28. I didn't check it in a25 or a26 when I had those installed.
[Nexus 7 Android Development] bervin:
does a28 work with cm10.1? seems like you reworked the kernel hence i'm asking if you regressed on making your kernel compatible with cm10.1
[Nexus 7 Android Development] Metallice:
It should work fine.
[Nexus 7 Android Development] adstraylight:
It does work fine.
[Nexus 7 Android Development] nextelbuddy:
im on a27 (updated from a24) and with setCPU have a max of 1.6 and a min of 340mhz.

i continually get sleep of deaths.

is anyone else getting these?

never had them on a22.

always having to hold power button to reset my tablet.
[Nexus 7 Android Development] Metallice:
Someone else said they were having problems with 1.6GHz. Try raising the voltage for that slot or lowering your maximum to 1.5GHz.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] Metallice:
Alright what's going on here? Currently a28 has just as many downloads as a27, but 1/10 as many impressions and comments.

I need your help people! I'm clueless until I can get a new Nexus 7! (Darn shipping fee!)
[Nexus 7 Android Development] adstraylight:
I'm currently running 28, and I have to say I'm not seeing much of a performance decrease in general use from my beloved 26, a bit early to comment on battery drain, but it's all good so far :good:

I was the one having sods at 1.6 btw, sadly raising the voltage didn't seem to help, I did post a last kmsg a few pages ago: http://xdaforums.com/showpost.php?p=36181411&postcount=2258
[Nexus 7 Android Development] berkos:
no probs for me so far, flashed since release, stock settings,just undervolted, rasbeanjelly ROM, can't tell you about the battery because girlfriend occupied my n7 for the whole afternoon, but stability wise it's solid as always.
[Nexus 7 Android Development] Metallice:
There was nothing to suggest anything wrong. Similar to a lock up from too little voltage or too high of an overclock.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] DemosZevasa:
Getting great battery life from a28 and can't complain about the performance. Love it. (I'm not one of those users that would burn there GPU just to get an extra frame per second lol)
[Nexus 7 Android Development] Stuphologist:
Um, it works fine? I'm running it with the A25 settings. Battery is hanging in quite well and no lag or hitches or anything. Quiet means nobody has found anything to complain about, right?

Dave
[Nexus 7 Android Development] knitler:
I am running a28 with almost a25 on demand settings, and I removed .05v from all my voltages, 1.4GHz and 520GPU everything feels smooth and perfect as ever.
[Nexus 7 Android Development] FReaKRaNT:
-=O-M-G=-

Cheers, FReaKRaNT
[Nexus 7 Android Development] volcom000:
Everything great so far.. ! Thanks a lot !

I'm running a28 : 1100Ghz, deadline, -50mV ... And it's smooth !
[Nexus 7 Android Development] EvanA:
So far I'm liking a28. I think it is a good balance performance-wise between a26 and a27. Can't comment on battery life right now, but I'll report usage once I've used all the battery. Running at 1.6 CPU/690 GPU. So far no sleep of death issue. I'm also using sio with v6 supercharger and KAK.

EDIT: Actually running 1.5 CPU, didn't realize that I had changed it.
[Nexus 7 Android Development] adstraylight:
Play Some Sound on your N7 - it will go to 102, this is the default anyway, there is just a routine in the kernel that steps it up to 340 for audio playback, for some reason it doesn't start to operate until the first sound is played after boot. Before anyone says "but it uses the 102 slot regardless" , I can assure you that it doesn't - checked with trickster and cpuspy...
[Nexus 7 Android Development] Metallice:
Thanks. Good to hear. ...but I wouldn't recommend using SIO. It's vastly inferior to an optimized deadline. It's just slower. The defaults on the kernel are the defaults for a reason :) (well except for the default max freq)

I'm going to do some housekeeping before MR1. SIO will probably get the axe.

You could also try the new ones ROW and BFQ.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] Metallice:
Um, thanks?

I kinda need to know more than "it works and nothing to complain about." Especially when i can't play around myself. If that were all I needed then we'd all might as well be running the stock kernel as it, for the most part, fits that criteria :)

Sent from my Galaxy Nexus
[Nexus 7 Android Development] Metallice:
Well i did for me. I had all touch sounds and lock sounds off and it still went down to 102 before playing a sound.

Sent from my Galaxy Nexus
[Nexus 7 Android Development] zachf714:
To me a28 is as fast as 26 but better battery on PA did you change anything with the GPU to get the same speed but better battery ?

No SOD or RR yet which is great at the stock clock speeds .. This has the best battery balance been running for 2 days with 2hrs of screen on time and processes in the background and still at 57% i would have better battery stats but school is in the way of use :)

Sent from my Nexus 7 using Xparent ICS Tapatalk 2
[Nexus 7 Android Development] Metallice:
Nope.

Hotplugging delays like a27, except for down delay decreased from 2000ms to 1000ms (turns off cores quicker). Ondemand parameters like a25 except a bit more performance friendly, but way more battery friendly than a27.

All of those would result in better battery, but decreased performance.

The performance boost comes from the first part of the a28 changelog. That's exactly why I added that feature. I thought LP scaling down too quickly between scrolls and UI interaction might have been a source of lag. Looks like I was right. (Wasn't easy... I had to make sure the freq lock still allowed scaling up too) (showp's original implementation wouldn't allow it.)
[Nexus 7 Android Development] adstraylight:
The thing I never got to the bottom of the last time this came up, was if this was only happening to those of us running CM10.1. This would account for the scarcity of complaints as it would only be noticed by CM users with no touch sounds.
[Nexus 7 Android Development] zachf714:
I figured something with the gpu or CPU ... Is there a way to OC ram on the nexus 7 because on the tf101 and on custom computers you can ?
[Nexus 7 Android Development] _DrG_:
A28 stable for me but quite noticeably not as fluid as a26, tweaking governor settings to find my own mid point, a26 was a battery eater but it did fly, i ended up changing a few governor settings to get a good balance, thanks for such a stable configurable up to date kernel, even my missus asked what i had done to it when she had a little play with a26 running in all its glory lol
[Nexus 7 Android Development] Metallice:
No. EMC frequency depends on a timing that is hard coded on the chip as part of the bootrom. So it's not possible unless I figure out a way to change it after boot... if that is even possible... which is doesn't seem to be.
[Nexus 7 Android Development] _DrG_:
Have noticed on a28 the down differential ondemand governor param is stuck on 5, you can change it but the change does not stick.
[Nexus 7 Android Development] zachf714:
I think after looking at some stuff and thinking the only way would be to have a kexec boot process with modified boot rom chip which is more dangerous than flashing the bios on a computer :)
[Nexus 7 Android Development] EvanA:
Alright, thanks for the suggestion. I'm testing out BFQ right now.

On a side note, which linaro release are you using to compile?
[Nexus 7 Android Development] Metallice:
Cpuspy will show you everything you could want to know about the toolchain. Right at the bottom of the app.
[Nexus 7 Android Development] Stuphologist:
If it was performing only as well as stock, it wouldn't be fine! Still, I take your point. Right now, after a typical day including one long meeting I've still got 77% battery. I’m running A28 with the A25 on demand defaults, 204/1400 GPU 600.

Dave
[Nexus 7 Android Development] ezas:
I can assure you it does. (use 102) Maybe it doesn't for you but I have verified for myself many times.

Get Cool Tools from the market and watch it in real time.

<

Swyped from my N7

Current: PA 2.99 b9.5 & M-Kernel+ a28

---------- Post added at 05:20 PM ---------- Previous post was at 04:59 PM ----------

a28 running well for me with stock ondemand settings CPU at 1500 GPU 520. Fsync and Smart dimmer turned off.

I notice just a hair slow down from a26. I mean any less and I wouldn't be able to tell. Zen pinball is as smooth as smooth can be. I used to play a crap load off pinball and I would notice even the slightest degradation of the physics.

I don't really pay attention to battery but I'm not noticing any differences.

I saw that Imo had dropped 1.0 of his leankernel and flashed it and saw no difference in speed between it and a28 both running at only the settings baked in.

<

Swyped from my N7

Current: PA 2.99 b9.5 & M-Kernel+ a28

---------- Post added at 05:42 PM ---------- Previous post was at 05:20 PM ----------

So for giggles I reset a28 settings to default settings and started some music to play in the background and ran Zen Pinball again. Still ran smooth. And while maybe just a touch slower still very realistic game play.

<><><><><><><><><><><><><><><><><

Swyped from my N7

Current: PA 2.99 b9.5 & M-Kernel+ a28
[Nexus 7 Android Development] NicoGa:
a28 also run very smooth and battery friendly for me based on default governor settings (lots of map today, 50% battery with 3h30 of screen and 14h45 without plugin to charger :)

I do not have more comments for now, but it is because of satisfaction!

Thanks Metallice!

Envoyé depuis mon Nexus 7
[Nexus 7 Android Development] snarlytaz:
2 days 1 night sleep no charge on a27 and at 35%. Internet and light gaming use as well as music playing.

Put on a28 and maybe I just do something wrong. I think butter went away. Even home or drawer transitions the jitters came back. Zen pinball more jitters. 1.5/520 both ondemand and performance.

FYI for me while I didn't do the last couple days, I don't mind some butter loss. I like battery savings. I tend to run 1.3/416/on demand with additional UV settings for general use. I just like having the good option to have that butter performance when I want despite the battery. One of the reasons I really do like (said it before) M-kernel... Hehe I only jump to another kernel when I need flash. (Doh... Sorry. Wasn't supposed to say that. Really - just kidding.)
[Nexus 7 Android Development] ezas:
So I ran the same 'test' using Franco r38 and leankernel 1.1 both using what ever the stock tweaks that are baked in.

In all all three cases, running music in the background (with AC!D audio processing) and using Zen Pinball on standard settings.

My goal was not to find the best kernel, and I have zero idea what the design goals are for each of the kennels. This is very much a take from this what you will test, since except for using default settings and the same processing load I did not attempt to make it an apples to apples test.

I would say that in all three cases game responsiveness was the same. Virtual indistinguishable.

If I HAD to rank one the fastest it would be leankernel. With Franco and a28 being as close as I could tell equal.

<

Swyped from my N7

Current: PA 2.99 b9.5 & M-Kernel+ a28
[Nexus 7 Android Development] bcvictory:
I'm releasing my kernel test results today. You can find my thread in my sig or in the N7 General forum.
[Nexus 7 Android Development] ace-user:
a28 is pretty good...it's not as fast as a26...but still everything is quite smooth(again, not as smooth as a26)..battery life wise seems good too..i hv 2hours 3mins on screen time with 72% left. ..no sod what so ever...very stable...

Sent from both my sexy galaxy nexus and nexus 7 X)
[Nexus 7 Android Development] jamesst20:
Hi :)

m28 is a bit slower then a26 but still faster then a25 :)

However, I'm unsure if I am the only one but since a28 (didn't try a27) I feel like it doesn't scroll as good in tapatalk

Thanks
[Nexus 7 Android Development] zachf714:
Is supposed top be slower than a26 it does not lag in tapatalk for me though

Sent from my Nexus 7 using Xparent ICS Tapatalk 2
[Nexus 7 Android Development] EvanA:
Battery results. One day of usage on a28 at 1.5 CPU/690 GPU. Light browsing and a few games.

I'm happy with that :D

Sent from my paranoid+m-kernel Nexus 7
[Nexus 7 Android Development] evilgenx:
Great kernel. Been running nice and smooth for me. Thanks!
[Nexus 7 Android Development] Metallice:
I'd say that's pretty darn good with those frequencies. Also if you want your GPU that high you should use 666 or 700. Not anything in-between. Complicated reason.
[Nexus 7 Android Development] EvanA:
I guess I'll have to down then because my device can't quite handle 700, at least from my testing. Running at 700 causes lockups when I try to shutdown or reboot.

Sent from my paranoid+m-kernel Nexus 7
[Nexus 7 Android Development] thisguy23:
Metallice,

I'm using 28. I can't report an accurate usage today bc I charged for a few minutes. But all day and I'm now just breaking 14% after being off the charger mainly since 7am. Also, any feedback on your thoughts on franco's kernel not using lp and using g cores only from 100 - 1300? He claims that the switch from lp to g uses more power than just using g all the time. Not to mention the speed difference. Thoughts?
[Nexus 7 Android Development] VenomTheCat:
I just sent you a little donation so you can finally get your N7!

Thanks for all your hard work!:good:
[Nexus 7 Android Development] TheDarkDefender:
Does this kernel support USB OTG ?
[Nexus 7 Android Development] VenomTheCat:
Yes it does.

if this helped please click thanks! lol...
[Nexus 7 Android Development] tobitronics:
Just had a random rebooy, running 513/520 a2 kernel

Beamed from my Paranoid Google Nexus 7
[Nexus 7 Android Development] Kearkan:
I would believe that, my N7 is a c70 so that could be an explanation, luckily I'm getting a 32gb ASAP!

Just to be clear you mean as in the core itself runs at -50mV which is different to the voltages we can set at particular frequencies?

Does that mean system tuner is not giving the actual values? So, for example if the default at 520MHz is 800mV and I go-50 then in reality at 520 its using 700mV? I need it working today but if this is what you mean then tonight I'll swap it back and not touch the voltages and see how it goes. On the a1 (and just about every every other kernel) I've been able to use -50mV with 0 issues when overclocking, -75 at stock speeds.
[Nexus 7 Android Development] Metallice:
Core = GPU, RAM, BUS, LP chip, and other stuff. Basically everything that's not the CPU.

Completely unrelated to CPU voltage which is user modifiable.
[Nexus 7 Android Development] msr4:
Getting speaker pops when unlocking tablet ever since I flashed this kernel. Not even overclocked, either. What's up?
[Nexus 7 Android Development] lambgx02:
Same here. Audio dies immediately after, and I noticed one of my speakers was getting warm (hope it's not triggering DC out!) :confused:
[Nexus 7 Android Development] sizanx:
The audio issue has something to do with LP clock as stated before, I've had the same issue and running the kernel from PA2.50 until a non overclock LP version is released (dno the normal LP clock, had the audio problem on 513Mhz also).
[Nexus 7 Android Development] Metallice:
a3 soon.

EDIT: as in now.
[Nexus 7 Android Development] MrDrift42:
Flashed 466/475. Will report back on audio.
[Nexus 7 Android Development] dSlice:
I'm trying the 446/620...
[Nexus 7 Android Development] MrDrift42:
That didn't take long, already popping away. Poop. Still the best kernel out there :D.
[Nexus 7 Android Development] dSlice:
So far no popping nor sound cut offs...
[Nexus 7 Android Development] kzakhar:
Thanks! So, basically the m-kernel already includes lower voltages: 1.3 GHz = 1075 mV, while stock is 1175?
[Nexus 7 Android Development] kzakhar:
I just flashed a3 446/475 kernel, and suddenly my device feels — well, I'm not sure how to explain it, — a bit sluggish. I realize Quadrant isn't a good indicator, but its scores are also consistently ~1.2k lower compared to a2 446/513.

Is anyone experiencing the same? Is this an expected behavior?
[Nexus 7 Android Development] Ricolein_Rico:
Stock voltage at 1.3 Ghz should be 1075 mV.

You can nicely see all cpu frequencies and corresponding voltages with system tuner.
[Nexus 7 Android Development] kzakhar:
Then I'm a bit lost: the table has more voltage setting than frequency setting entries.
[Nexus 7 Android Development] Ricolein_Rico:
I might be mistaken with stock=1075 mV since different kernels may use different voltages and I was referring to Motley's "stock" voltage.

To be sure you could reflash the 4.1.2 stock kernel and check the cpu voltage with system tuner.
[Nexus 7 Android Development] kzakhar:
The problem with stock 4.1.2 and stock PA kernels is that they don't show any voltages, the Voltage tab is missing from System Tuner. If it was that simple, I wouldn't be asking here :)
[Nexus 7 Android Development] Lim Wee Huat:
Was using a2 (446/513), flashed a3 (446/475). a3 did not eliminate the pop/sound cut off issue.
[Nexus 7 Android Development] Ricolein_Rico:
OK, didn't know that.

It's suprisingly difficult to find consistent information on nexus 7 stock kernel cpu voltage.

The undervolting guide from "Jayce Ooi's Paradise" shows a SetCPU screenshot with 1125 mV standard voltage at 1300 Mhz. But don't know if that is already biased since the custom kernel the site is referring to is Motley's kernel...
[Nexus 7 Android Development] sizanx:
a3 didn't help me either.
[Nexus 7 Android Development] TheDarkDefender:
Thanks. What about the stock kernel ?
[Nexus 7 Android Development] Keitaro:
Yes but only if you are rooted and use an app like...

https://play.google.com/store/apps/...wsMSwxLDMsImV1LmNoYWluZmlyZS5zdGlja21vdW50Il0.

...to actually mount your USB stick/drive.
[Nexus 7 Android Development] TheDarkDefender:
Rooted, running Aokp mr1 b1. Tried the stick mount app,doesn't recognize. Don't know why.
[Nexus 7 Android Development] NicoGa:
In fact, no app is needed but, your ROM just have to support it by including the following line in /system/etc/vold.fstab:

dev_mount usbdisk /storage/usbdisk auto /devices/platform/tegra-ehci

Also, It can be added manually in the stock ROM. That work just fine for me.

Envoyé depuis mon Nexus 7
[Nexus 7 Android Development] Metallice:
Thanks! I think that may actually do it! Thank you!

And thank you to everyone who had ever donated! You guys are amazing.

Sent from my Future Nexus 7
[Nexus 7 Android Development] Sveke:
Thank you sir for a great kernel. A28 is running great and I got 6% idle drain over 20 hrs with WiFi high speed on and connected the whole time. Excellent.

Sent from my Nexus 7
[Nexus 7 Android Development] aalupatti:
I was on 28 for the last day... I agree that it fits right between 26 and 25 in terms of performance. No lags noticed but decided to go to 26 as its still smoother and faster. Don't mind even if there is increased battery usage.
[Nexus 7 Android Development] TheDarkDefender:
Thank you. Could you be more specific and tell me at which place I should add it ? A screenshot would be very helpful.
[Nexus 7 Android Development] getmoneygreen:
:confused: can i use this kernel for the 34gb wifi only version ?
[Nexus 7 Android Development] Linkmeup82:
3g+WiFi means 3g and WiFi only so your answer is yes you can :)
[Nexus 7 Android Development] Keitaro:
If you don't already have a root enabled file browser then install this free one...

https://play.google.com/store/apps/details?id=com.jrummy.root.browserfree

• Open the app

• Navigate to /system/etc

• Find the file "void.fstab" at the bottom of the above folder and press and hold

• Select "Open with..."

• Tap "Open as..."

• Tap "Text file"

• Select a text editor (hopefully you have one installed, here's a free one if you don't https://play.google.com/store/apps/details?id=jp.sblo.pandora.jota )

• Add the line "dev_mount usbdisk /storage/usbdisk auto /devices/platform/tegra-ehci" without the speech marks to the bottom of the file.

• Save the file

• Reboot your Nexus 7

• Plug in your usb stick

• Browser the contents of your usb stick at /storage/usbdisk to make sure it's mounted

Somewhere in those steps it should ask you to allow root privileges for the app you installed earlier and maybe also for the text editor you are using. You have to grant it access otherwise it won't save the changes you tried to make.
[Nexus 7 Android Development] Nico_60:
How to unmount with this method ?

Envoyé depuis mon Nexus 7 avec Tapatalk
[Nexus 7 Android Development] Metallice:
Anyone try out ROW? Designed for mobile devices in mainline linux kernel. Read over write.
[Nexus 7 Android Development] Allosaur:
Go to settings | storage and at the bottom of the screen you'll see an option to unmount.
[Nexus 7 Android Development] SkyboneNoya:
How much memory are you guys using with nothing open? Im on pa 9.5 with m a28 at around 245mb/937.4mb used. It was at 400 something but it looks good now on a28. I noticed the settings don't really stick,always reverting to 1500mhz on reboot. Anyway, love the kernel! Fix: (lol homework has my mind scrambled)

PS. I think i should adb n see if swap is working. Using trickster mod for info.

Thx

---------- Post added at 03:33 PM ---------- Previous post was at 03:28 PM ----------

I am using smartassv2 w/ ROW on my captivate, its kind of just sitting there though. Left hellybean for more updated development. Semaphore kernel seems promising.

Ill let you know how it goes. ATM its smooth!
[Nexus 7 Android Development] Sveke:
Been using row since it became available. Its great! Love it.

New fave.
[Nexus 7 Android Development] LINKSLOVESANDROID:
a26 with pa 2.99 beta 9.5 butter. updating to latest :p great job
[Nexus 7 Android Development] shongsa:
will there be no more 555mhz lp core release in the future?

I dont feel safe using the other one fearing it might shorten my nexus 7 lifespan. Is there a way to adjust the lp max frequency?

Anyways, great work :good:
[Nexus 7 Android Development] christianpeso:
Do u plan on adding any of the entropy tweaks? Imoseyon has just put out his kernel for the nexus 7 and galaxy nexus with a modified version of the entropy tweak that is supposed to be better.
[Nexus 7 Android Development] Metallice:
No. Never. I won't add anything that is 100% placebo.

I'll add things like zRAM because they at least actually do something. Entropy tweaks on the other hand do nothing.

Until there is a single piece of verifiable, reproducible evidence that it actually does something, I won't consider it.