yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Yeah, I'll add it in soon. I might have to PM you though, I have been off school for 8 weeks so my maths are a bit rusty.
[Nexus 7 General] VenomTheCat:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Uff... Man 8 weeks you probably don't remember anything by now! J/k you probably mean 8 years right?
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Hahaha, na 8 weeks. Aussie school holidays are weird. I'm forgetful hah
[Nexus 7 General] piupiu piu:
You didn't understood while bench is running i'm scoring 2400 then instead of adding scores they take 200 and next number is 2200 an again suming to about 5330 i can add screen shots
[Nexus 7 General] bennettg:
Is there a similar analysis for those of us still on 4.1?

Thanks in advance
[Nexus 7 General] brakke97:
The 'M-Kernel' is the best kernel for me! Just one thing: Please increase the game performance!!! :silly:
[Nexus 7 General] zarac:
After updating kernel to M-kernel a36 yesterday, in TricksterMod app I noticed "max active CPU cores" is set to 2.

I haven't noticed any performace issues as a result.

This is what Metallice says about that (http://xdaforums.com/showpost.php?p=37617199&postcount=3617):
[Nexus 7 General] Gen00:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

I need some help please.. I got a canon rebel camera n I've been trying to get DSLR controller to work with my N7 I've read that its compatible with my camera.. The app stats that if I'm rooted that my kernel shld have OTG support was reading this kernel has it so why is it not working? Is there something I need to activate for OTG to work? Please help I really want this to work I need it for my photography..

N7 info

SmoothROM 4.4

Motley latest
[Nexus 7 General] gorillajuice:
You may need an additional app like stick mount or something from Play store. I'm not 100 percent sure but I think your kernel and rom both have to support usb otg. I'm running Revolt Rom now and I don't need stickmount but some older roms I ran I needed it
[Nexus 7 General] ghost02:
Can anyone comment on which other Kernels do this?
[Nexus 7 General] CARUPANBOW:
Greetings

At first I want to thank all the guys who are working so hard to optimize the kernels in terms of battery life/performance.

I need to ask if anyone can tell me which kernel includes support for ad hoc wifi. I have tried a couple of kernels but no luck so far, and I need to add to my N7 ad hoc wifi support, I've been doing some research but im no android expert, and my guess is that I need to modify the kernel to support it, if anyone could help me at least showing me how to do it I would really appreciate it.
[Nexus 7 General] fluxthesky:
How much minutes are you guys getting per % while browsing on chrome? I'm getting only 3, which really suck considering I used to get 4 on all stock.
[Nexus 7 General] TheLawIX:
Franco for life!! Best kernels out there.
[Nexus 7 General] TardyKilla:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Lean Kernel for smoothness. Pairs really well with PrimeDirective's Prime ROM.
[Nexus 7 General] Daxmaxwale:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

M-Kernel work good with PA3 ? Any advice?
[Nexus 7 General] SWOLEGASM:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

It's working very nicely with my n7 on their PA nightly of 4.2.2
[Nexus 7 General] bcvictory:
No. Your right man. Just takes time ;)
[Nexus 7 General] bcvictory:
Even newer battery tests are up
[Nexus 7 General] ÜBER™:
Lol thank you. People really/should only over clock for benchmarks. There is no real need for it otherwise.

Sent From My Toro+ via White Tapatalk
[Nexus 7 General] simms22:
when benchmarking you need to set it at highest cpu/highest cpu, otherwise it scales and you dont know what frequency its actually benchmarking. it could be benchmarking a different cpu speed for each kernel, and could be benchmarking a different cpu speed for the same kernel every time you run a benchmark. the device decides, and it wont decide to use the top speed every time if anytime.
[Nexus 7 General] gallahad2000:
Can you test the clemsyn UV kernel? I'd love to see if the UV yields any bonus battery life. TIA.
[Nexus 7 General] krazeecracker:
Stock everything for best battery lol didn't see that coming.
[Nexus 7 General] bcvictory:
I did that for the benchmarks.
[Nexus 7 General] noneabove:
I have two N7s atm until I send the other back (rma) can someone direct me to where I can download the stock kernel for testing ? Thanks :)
[Nexus 7 General] bcvictory:
http://xdaforums.com/attachment.php?attachmentid=1214328&d=1342961396

Should do it.

I tried it and it gave me bootloops though.

I had to use the CNET Review tests results for the stock results.

Is the CM10 kernel close enough to the stock kernel for me to test myself?
[Nexus 7 General] simms22:
cm10 kernel is pretty far from stock.
[Nexus 7 General] bcvictory:
Elite Extreme Underclock & Faux Enhanced Stock added.
[Nexus 7 General] tntgdh:
well i tried trinity for a while. now in installed motley and will leave for a week.
[Nexus 7 General] noneabove:
If my knowledge of kernels and fast boot is at all correct, could I not download the stock rooted ROM and then extract the boot.IMG and flash that through fast boot?
[Nexus 7 General] Ronaldo Forenucci:
'Real Use' battery stats for Trinity TSVZ-111 with RasBean Jelly:

I wiped batterystats.bin, so had to run my N7 to zero. I used it as normal - messing with programs, transferring files, YouTube, browsing... a lot of time was spent installing and uninstalling UPnP and DLNA programs to get a good music browser for network shared music.

51/1200 ondemand/deadline -25mV under default Trinity voltages -

9.5 Hours with 87% Screen On time. Brightness was at it's lowest.

RF
[Nexus 7 General] timfimjim:
Wow that's very impressive. Is that rasbean v0?
[Nexus 7 General] Ronaldo Forenucci:
Whatever the 9/19 release was...I think it's v1.

RF
[Nexus 7 General] ÜBER™:
You wiped battery stats... so you had to run it to 0%??:confused: charging to 100% is the sane as wiping battery stats... means nothing.

Sent From My Toro+ via White Tapatalk
[Nexus 7 General] Ronaldo Forenucci:
Thanks for the info...even if a little condescending. What does that have to do with how long my device lasted on RBJ with Trinity?

RF
[Nexus 7 General] krazeecracker:
I don't think it matters tbh. Its real world use either way. Which is what the op should have done. Most people use it for more then just movies. None the less. This is a great topic. Much needed lol
[Nexus 7 General] noneabove:
Just a quick testing of my own, I've been running a video (I attached it if you want to get an idea of how much black there is, I'd say over the whole video about a third of it is blackness) on 50% brightness.

Did it for 10% of battery life without wifi, took 1 hour and 10 minutes to drop.

I'll update when the next 10% has dropped with wifi turned on.

Running franco9 kernel btw, with fsync set to safer, wifi set to battery, 1300 max, 100 min, ondemand. After this 10% gonna set it to 1200/1200 performance for the next 10%.

Next 10% with wifi on same settings as last time went 56 minutes

Next 10% running 1300 mhz 10% took 40 minutes, wifi was on for this too btw.

Seems to be pretty good battery life overall!

To sum up even with screen on 50% brightness, playing the video i have attached, battery is at 70% with 2 hours and 46 minutes of screen on time. I think that's pretty good.
[Nexus 7 General] FitAmp:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Just showing you my battery backup. For people wondering about 4.2.2, this is it completely stock.

I've got very great battery usage, always had WiFi on
[Nexus 7 General] azoller1:
Very nice job of doing this, I might start a thread like this for the best TCP congestion mode
[Nexus 7 General] ynksbsbll2:
I just can't seem to get such great battery life. I'm almost 13 hours on battery with only 1 hour and 18 minutes of screen time and my battery is down to 68%. For some reason Android OS is using 40% (the screen is using 40% as well). I'm in the same boat as you in terms of wi-fi always being on, but I'm on M-Kernel and a custom ROM rather than stock. I really should give the stock kernel a go and see how that manages.
[Nexus 7 General] FitAmp:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Other things can have a negative impact on battery life, I do have tons of apps, but I always manage which ones are running. Also clean installing a ROM is always safer and will probably give you some better battery life due to everything being clean. Many apps do have instances of running in background so it is helpful to check every now and than.

Also disabling GPS will give you some extra time per charge. I always disable it. And I keep WiFi location enabled.
[Nexus 7 General] ynksbsbll2:
Yea, I already do most of those things. I think my current ROM/kernel setup is just particularly bad as I drained 23% overnight whereas I normally only drain maybe 4 or 5%.
[Nexus 7 General] FitAmp:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Sounds like a bad setup. I can get about 1-2% battery drain overnight (on average)
[Nexus 7 General] ynksbsbll2:
Definitely. Thanks to your pictures I might even just go back to complete stock android and see how that fares for battery life.
[Nexus 7 General] FitAmp:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Didn't really state it before, but yes I am rooted.
[Nexus 7 General] ynksbsbll2:
Well, after a little trial and error I've finally got this thing pinned down. I'm already at about 8 hours of screen on time (device on about 17 hours) and still have 24%. At this rate I should be able to get 10 hours of screen time no problem. Unfortunately I had to reboot at one point and it stopped logging screen on time so I can't really back it up with pictures
[Nexus 7 General] FitAmp:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Don't worry bro, I believe you. Depending on many variables, it is a realistic amount of screen on time :)
[Nexus 7 General] ynksbsbll2:
Final tally:

19 hours 45 minutes on, 10 hours 40 minutes screen time.

This is with stock kernel, ondemand governor (min freq at 100MHz, max at 1000MHz). I don't do much gaming or CPU intensive activities so 1000MHz is more than enough for me.
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Wow. That's huge battery life. What rom?
[Nexus 7 General] ynksbsbll2:
Prime/Vanir: http://droid-hive.com/index.php?/topic/536-rom-422-prime-d02-13-vanir-happy-vd-skanks/page-1
[Nexus 7 General] piupiu piu:
You should apdate this thred.

Please
[Nexus 7 General] Deivi_Z:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Yeah we need to update this thread. I might do my own tests. But basicly I'm gonna test for max battery life. Will go for 1000mhz and max stream time with max video only time.
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Need is a big word. But I was thinking about it today. I'm getting horrible battery life. 4 hours screen on time a cycle. Trying to work out how it could be that bad
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Quick informal update:

Franco r47

Default settings.

WiFi on, brightness max, playing 720p video on loop. Software decoded

1.3GHz: 5 hours 50 minutes.

Compared to previous result (7 hours 10 minutes)

That's an hour and 20 minutes of battery gone.

Might just be my setup.

I did a clean install of PA 2 days ago.
[Nexus 7 General] Deivi_Z:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

I get 7 - 7.5 hrs but I want to push it to 9 - 9.5 hrs
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Same here. What ROM are you using?
[Nexus 7 General] Searz:
M-Kernel has reached milestone 1 now.

It's amazing for me so far.

I'd love to see a comparison with Franco.

Thanks for the thread.
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Coming very soon ;)
[Nexus 7 General] Lowes48:
Will M-Kernel -mr1 work with the non 3G versions of the Nexus 7?
[Nexus 7 General] VenomTheCat:
Yes it works with Wifi and 3g versions
[Nexus 7 General] ynksbsbll2:
How much does the ROM itself affect battery life? I was always under the impression the kernel was the main driver, but it seems like my idle drain on this particular ROM is double what I got on stock 4.2.2, despite the same kernel (and kernel settings).
[Nexus 7 General] slybunda:
kernel will effect battery life the most, unless you got a rom that has a ton of processes running in the background. although since stock rom is a nexus rom its fairly stripped down compared to other devices e.g samsungs which run touchwiz etc.
[Nexus 7 General] piupiu piu:
Update this topic
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Make me. No please or anything, wow.
[Nexus 7 General] NicoGa:
sudo make me a coffee

In french we say:

ca ne coute pas une merde d'ètre poli
[Nexus 7 General] halrulez:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

I want a pony!
[Nexus 7 General] BESS667:
For me Franco, because doen't mess up the Flash player like the others.
[Nexus 7 General] xfrancis14:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

The latest mkernel a38 fixes flash
[Nexus 7 General] inscythe:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Yup, i just switched from franco to motley then to M-kernel after the flash fix was announced.
[Nexus 7 General] zaclimon:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Normally for me it was ça ne coûte rien but you added a bit of spice in it.
[Nexus 7 General] NicoGa:
Yes, it is a bit trashier but generally people remember it better :)
[Nexus 7 General] zaclimon:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Yeah well its always like this anyways. :p
[Nexus 7 General] VenomTheCat:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

I always get 4 hours of screen time no mater what I tried every ROM and kernel

Right now I am using a clean install of PA 3.1 and m-kernel under clocked to 1.1 ghz and 2 cores and I only have installed facebook , xda app, and subway surfers and I only get 4 hours.

I have seen people here that get way more
[Nexus 7 General] ynksbsbll2:
I've found that using onDemand governor helped with that. It seemed that with Interactive (I'm assuming that's what you have set) the frequency would always be at it's max whenever the screen was on, whereas onDemand would dip to around your minimum.
[Nexus 7 General] VenomTheCat:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Actually I am using touchdemand as the governor

Also my screen is at 30% WiFi is on but everything else is off including GPS and g currents
[Nexus 7 General] JakeAnthraX:
I switched from Franco to M-Kernel after a few SoD bugs. Just refused to wake up too often. M-Kernel works the best right now using only 2 cores and limited clock rate down to 1.0 when just browsing.
[Nexus 7 General] ju1da:
I will stay using Franco kernel until a new comparison for 4.2.2 is updated by OP. Thanks for great guide anyway!
[Nexus 7 General] bcvictory:
Update Time

Sorry for not updating this for a while. My original N7 cable broke and that charges a lot quicker than the generic cable I have to use to charge now. I have a new N7 coming in the next few days but I also have a 3 day weekend so I might be able to do some tests then.

Also my battery life has been sucking. With Franco I could get about 4 hours screen on with default settings and with M-Kernel I could get maybe a little more but not much.

I'm starting to wonder what I'm doing wrong. Maybe PA is the problem? Any ideas to help me?
[Nexus 7 General] ncguy68:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

I would think the constant repetitive deep draining of the battery to do the tests will cause the battery to fail faster than it normally would. It may be the reason for the shorter battery life.

---------- Post added at 06:37 PM ---------- Previous post was at 06:35 PM ----------

I am getting about 9.5 hours screen on time using m-kernel and stock rom with 10% battery remaining.
[Nexus 7 General] bcvictory:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

I worked out what the problem was. Getting almost the normal amount now.

Done all the M-Kernel and Franco tests
[Nexus 7 General] extremetempz:
Mkernel or franco

which one got better battery results :D can you update thread today some time
[Nexus 7 General] VenomTheCat:
Re: [GUIDE] *27/1 UPDATE* 4.2.1 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

What was it cause I have the same issue!?!?!
[Nexus 7 General] bcvictory:
I did a factory reset. All good.
[Nexus 7 General] bcvictory:
4.2.2 RESULTS ARE OUT!!! I don't know the future of this guide after this update. It seems to do some harm to my Nexus's battery. Might need some help in the future!
[Nexus 7 General] Skyfall007:
the volume was at 30 level? Thanks!
[Nexus 7 General] bftb0:
If you are noticing significantly different battery life, it calls into question the battery test results - all else being equal, the kernels tested later will have worse scores than those tested earlier if the battery is progressively failing throughout the testing.

The fact that you are observing an early death of the battery probably can be squarely laid at the feet of the two battery benchmarks, especially with the Fmax condition & performance governor. By comparison to typical use-case patterns the battery benchmarks are extreme (both heat and sustained battery discharge rates). For about 10 kernels, that's 20 extreme discharge/recharge cycles every time you update this comparison - and so if you've updated this thread a couple of times, your talking ~100 extreme discharge/recharge cycles. That doesn't sound like too much if you expected a "normal" battery to last for two years of daily charging (~700 charges), but the fact that they happen at elevated temperatures probably means they take a higher toll on the battery over time.

I wouldn't blame you at all if you retire your device to a life of couch web surfing; it's been through a lot already ... and you'll probably be replacing the battery before you expect.

Thanks for the numbers.
[Nexus 7 General] bcvictory:
Re: [GUIDE] *11/3 UPDATE* 4.2.2 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

I'm pretty sure that the numbers are 99% accurate. Remember these numbers are what you would be getting if you were doing some intensive stuff. My device is getting replaced today!
[Nexus 7 General] ju1da:
Yes! THANKS for new comparison. I have been using franco k for weeks. For now, I believe more that my decision is correct.
[Nexus 7 General] thewebshark:
I apologize if this has been mentioned...I briefly looked, and didn't see anything....

But I was curious to know if there is an expanded breakdown of features for each kernel?

for example, which kernels support CIFS? I'm assuming all support NFS?

I've heard that some kernels handle audio and bluetooth differently?

like bluetooth may be more reliable or stable on one kernel versus another? and that audio sounds "cleaner" when using one kernel versus another?
[Nexus 7 General] bcvictory:
Re: [GUIDE] *11/3 UPDATE* 4.2.2 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Some Kernel OP's don't have that information. If you can help add to the breakdown go ahead.
[Nexus 7 General] spitswap:
thanks bcvictory

Appreciate all the work you put into this. Has anyone seen something similar for the Nexus 4? Not sure if the results would be directly comparable because of the different processors.
[Nexus 7 General] bcvictory:
Re: [GUIDE] *11/3 UPDATE* 4.2.2 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

This is the first time I've seen anyone do this. And the results would not compare at all.
[Nexus 7 General] brainvision:
Hi everybody..

thanks for your work here, I think it's really useful!

I'm trying to understand the Google Docs Excel file.. I noticed that some number are resulting from the sum of the 1.3 and total points.. but I don't understand the general sense..

could someone please explain me how to interpreter those results?

hank you very very much..
[Nexus 7 General] mkhtfld76:
Re: [GUIDE] *11/3 UPDATE* 4.2.2 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

?????

What does this ^ have to do with the topic???

---------- Post added at 04:40 PM ---------- Previous post was at 04:36 PM ----------

Sorry but I believe you are in the wrong thread.
[Nexus 7 General] Garridon:
Re: [GUIDE] *11/3 UPDATE* 4.2.2 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Do any of these support volume boost? I've tested many of them but haven't found it yet

Sent from my Nexus 7
[Nexus 7 General] bcvictory:
Re: [GUIDE] *11/3 UPDATE* 4.2.2 RESULTS! N7 'Best' Kernel? (Performance & Battery Tes

Basically its the 1.3 battery and performance results added together and the total is all 1.3 and MAX Tests added together.
[Nexus 7 General] Macmee:
Is the stock kernel really the absolute worst kernel available? If the good folks here at XDA can create better kernels then why didn't ASUS/Google ship the N7 with a better kernel in the first place?
[Nexus 7 General] bftb0:
Look at the raw scores more carefully.

After accounting for overclocking, all of the performance scores are within a 10% range of each other - some of the dev kernels are no better than stock, and probably far more likely to experience lockups or crashes.

You don't see stock users complaining of "Screen of Death", do you?
[Nexus 7 General] GedBlake:
Actually, looking at the numbers, stock kernel comes in at a

very

respectable second place... significantly after franco, and just slightly ahead of Motley. Stock and Motley are more or less, level pegging...

Unless you're reading different numbers than I am, then GLaDOS by Ezekeel comes right at bottom of the pile.

-----------

As of the date of this post,

903

have voted - I wonder what that is, as a percentage of those who have flashed custom ROMs; I suspect custom kernels aren't all that important for many.

Kernels are ethereal, vaguely mysterious entities in terms of what they actually do - THEY HAVE NO GUI... in the minds of most, they reside as quasi-mythological constructs that only nerds and developers understand... or care about.

Custom ROMs, on the other hand, confer very discernible and clearly demonstrable usable extended functionality over stock. THEY HAVE A GUI, and thus are tangible. Pragmatically, they mean something... they are 'quantifiable'..

-----------

Less than a thousand have voted here... out of how many Nexus 7 users ? (rhetorical question).

I suspect if every XDA member with a rooted/bootloader unlocked Nexus 7 was compelled to vote here, you would see the numbers for the stock kernel rise dramatically... and would push franco into second place.

-----------

Anyway... just my highly speculative ruminations.

Rgrds,

Ged.
[Nexus 7 General] Kotaless:
Thanks for test.