yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] Dorkington:
I think the smoothness is there when whatever is taking up CPU cycles lets go of the system. Its inconsistent for me... sometimes it's buttery smooth, seriously, wonderful. But then I'll get 30 minute chunks where I have to wait 5 seconds for every tap and swipe to register.
[Nexus 7 General] Po1soNNN:
Don't even talk about ios. ios has so many problems of its own. The more apps you load the slower it gets. That's because you have no control over what runs in the background, every app does. On Android we have ways to control auto starts and background processes. You obviously have a runaway app on your system. You should download watchdog and check what's hogging the cpu.
[Nexus 7 General] Captpt:
I'm curious, which N7 so you guys have the 16gb or 8?

It has been noted in tests the 16 it's faster due to a faster reader... pretty much why I went for the 16gb version..

No lag here...
[Nexus 7 General] sgill74:
had a bit of lag using paranoid android Rom, but XenonHD seems fine

You tube on stock Rom was a bit unresponsive too.....

16gb here
[Nexus 7 General] androidkid311:
Had 16GB. Sent it back. Looking to get another one soon as they have fixed the quality control issues. :)
[Nexus 7 General] mmaestro:
That was one of the first things I did when I started seeing lag. Nothing. It's the storage write speed. Seriously.

16GB

Clearing out storage helped for me, but it didn't help the whole way. I've been wondering if there's a problem with garbage collection or something where storage that's had its contents deleted doesn't work as well as it should. I deleted some movies I had on using ASTRO, and it was interesting that the system didn't display the space as having been cleared until after a reboot. I wonder if maybe that was part of the problem?
[Nexus 7 General] larzy:
I'm having the same problem..very, very slow IO speeds in quadrant but after reading this thread I've realized its because I only have about 1gb free of hard disk and it clicked to me that this lag began once I synched all my music to my device. Ironically, I had the exact same problem with my HTC One X when I filled the storage. The apps that lag the most are Chrome, Facebook and music player. It seems most games don't have any problems once they run.

I'll try and delete all my music and see if that helps...it must be a fragmentation issue of some sort. My nexus becomes practically unusable and gives me "process has stopped responding" error. Funny that this happens for about half an hour but then for the next few hours its back to silky smooth
[Nexus 7 General] Semantics:
I'm rooted and running bugless beast. I have a 16gb with 8gb free space. Like I said, I am used to Android lag so it really doesn't bother me. Its not so bad its unusable.
[Nexus 7 General] Jay Aristide:
I've got an 8gb with just under 2gb free and it's pure butter :) Turn off fsync and setup a zRam and see if life gets better for you

I can't speak to the 'stock' experience, as this is a nexus device and I was under the hood as soon as I unboxed it :)
[Nexus 7 General] bso44:
What's fsync and zRam?
[Nexus 7 General] bso44:
Wow...that's a lot for a semi-noob like me :laugh:. I might have to give it a shot though. What's the downside to disabling fsync?
[Nexus 7 General] Jay Aristide:
You could potentially have data integrity issues... I've been disabling fsync and remounting /data with noauto_da_alloc on my devices for ages with no issues, though
[Nexus 7 General] tamshiwen:
Auto syncing apps in the background were the biggest problems for me. Turning off background data sync in google currents got rid of most of the lag for me.

In the data usage settings, you can drag a pair of sliders on the graph at the top so that it can show you data usage for any app for a range of time, or narrow it right down to any given day.
[Nexus 7 General] bso44:
Gotcha...thanks!
[Nexus 7 General] Captpt:
I guess I should have noted that 8th of my 16th is still free which may be a reason why I'm not seeing the lag others are but honestly it shouldn't make that much of a difference..

My guess is some app or settings is causing some to have lag issues.. I dumped my iPad just for that reason, with each new ios update it got slower and slower to the point I put it on eBay and bought this little beauty!!
[Nexus 7 General] mmaestro:
So my lag returned a little over 24 hours after I did a reset. Not as badly, but it was there. Facebook's background push service really seems to cause problems, at least for me: that was what had started and was causing issues in this case. I'm really hoping this gets fixed in an update. It seems like it must be software and how the OS is dealing with background writes/data transfer, but it's odd that it's not so widespread.
[Nexus 7 General] fmf.post:
I'm onboard

Hi, I've been having lag for the last couples of weeks.

Randomly, different applications, different conditions, gaming, browsing etc.

In gaming is becoming very annoying... like dead trigger while selecting a different weapon of an exploding barrel.

Not very happy...
[Nexus 7 General] mparack:
Can someone please post a video of this supposed lag? I'm yet to see it.

Or we could rename the thread to "The sLag Thread" ;)
[Nexus 7 General] Dragooon123:
Looks like you're good.
[Nexus 7 General] ChrisM001:
With 2,5 I get no lag as well. Reduce free space to 1,5 GB!
[Nexus 7 General] yalouf:
I have just installed Horn from the market

Here are my results :

and 4gb free.

I start noticing system a little bit less responsive but not as bad as when i had 2gb left last time.

Before installing Horn, i had around 6gb left for several weeks and system was silky smooth :

I have to wait 15minutes to uninstall it...and see if the results change.

So descending below 6gb left is really the problem...

---------- Post added at 12:15 PM ---------- Previous post was at 11:43 AM ----------

6.3gb free again, and i am unable to get the previous SQlite results, Random Writes or Macro benchmarks.
[Nexus 7 General] Dragooon123:
Did a flash on latest CM10 nightly a couple of days ago and filled it up to 2GB free, and my performance is crap again. Doesn't look like JRO03R fixed this.
[Nexus 7 General] 4ktvs:
This is how the iphone 5 lags: http://www.youtube.com/watch?v=pgnkWjGvkYo
[Nexus 7 General] sauceboy25:
AOKP 4

I flashed AOKP build 4 last night. It wrecked my google apps until I reflashed gapps. Haven't reflashed JRO03R binaries yet.

In any case, the Androbench marks are interesting, to put it mildly -

SEQ RD - 16.2

SEQ WR - 175.05

RND RD - 8.06

RND WR - 172.09

SQL marks 408, 586, 767, respectively.

I'm not sure what that all means. Free storage at 2.31GB.

EDIT:

Reflashed the binaries - benches are a little higher - 20 for SEQ RD and over 200 for both WR scores. Let's just say it gets through the bench test pretty quickly.
[Nexus 7 General] Dragooon123:
And? What does the lag on a different unrelated device have to do anything with anything?

Your fsync is off.
[Nexus 7 General] Jay Aristide:
That's odd. PA 2.16 is built from CM10 nightlies, and fixes the issue.

Also, the binaries should have no impact on this issue.
[Nexus 7 General] ChrisM001:
Please fill up your free space until 1,5 GB is reached. Still no lag?
[Nexus 7 General] Metallice:
Weirdness... PA 2.16 seemed to initially fix it... but now my scores are bad again... like 0.5MB/s bad... but there's no lag to speak of whatsoever.... fast as it was when I last wiped it. Ill have to rerun androbench a few more times.
[Nexus 7 General] Richieboy67:
I have had mine almost full with no lag or issues at all.. I am using CleanRom 1.1 though.. Love my Nexus..

Perhaps your lag is being caused by background programs..
[Nexus 7 General] Dragooon123:
Can you benchmark with fsync on?
[Nexus 7 General] ChrisM001:
What does "always full" mean. Statements like this are not very helpful.
[Nexus 7 General] Jay Aristide:
Yeah, lemme turn it on and reboot. SS to follow
[Nexus 7 General] sauceboy25:
No lag, with 1GB free.

SEQ RD 19.31

SEQ WR 254.54

RND RD 7.22

RND WR 134.86

As for fsync being off, I'm not aware of how or where in this kernel (faux) to switch that.
[Nexus 7 General] Jay Aristide:
Here's fsync on, /data remounted noauto_da_alloc

Here's fsync on, /data not remounted

Here's fsync off, /data remounted no auto_da_alloc

Even with fsync on and /data not remounted, user experience was smooth and fluid, despite the low sequential write score.
[Nexus 7 General] Beggars1923:
Warranty Exchange?

Is this something Google is willing to concede is worthy of a warranty exchange? Would like to hear from someone who has contacted Google. I bought my 16gb through the Play Store in August and am experiencing lag. Already restored once and still have issues loading apps.

I am wondering if an exchange is even worth it if all 16gb devices are subject to this issue.

EDIT: Not sure if this has been posted here, but it appears Google is working on the issue:

http://productforums.google.com/forum/#!topic/mobile/loqbCbKVMWE
[Nexus 7 General] ExploreMN:
Earlier in this thread I posted my experience in contacting Asus about this (I know you said Google, but they will direct you to Asus if you are past the return date). Asus was...well...less than competent or helpful. They eventually would allow me to send the tablet in on my dime if I wanted to, but that wasn't acceptable to me. Luckily Staples customer service has been amazing and they helped me out.
[Nexus 7 General] Dragooon123:
Even then, the bug is not fixed in 4.1.1_r6, those I/O rates are nowhere near to what I was getting in 4.1.
[Nexus 7 General] Metallice:
How do you know that means it is worse? There's no more lag whatsoever (at least for me). It's possible that the scores are lower because TRIM is doing a better job at reporting free space or the storage is being better allocated and redistributed or magical storage fairies are clogging up the tubes while they make things faster. I'm making stuff up, but such a scenario is possible (yes even the last one :) ).

Heck I think it might be better even with the non-optimal I/O scores as I don't have any more lag while downloading from the play store in the background. (But truthfully that could be from another change)

All in all, why should you worry about lower I/O scores when they don't affect performance in any discernable way?
[Nexus 7 General] ÜBER™:
I guess its safe to say I don't have the bug.

Sent From My N7 via White Tapatalk
[Nexus 7 General] nakedninja42:
I thought I didn't either with less than 1GB free of the 16GB. Then I rebooted for first time in days and it the bug hit me hard. Removed Bard's Tale since I am playing Horn and few other games giving me 4.5GB free and rebooted, my tab is back to normal.
[Nexus 7 General] slixzen:
Are you running a custom rom Uber? What kind?
[Nexus 7 General] Jay Aristide:
I have no lag at all, regardless of what I'm doing, and regardless of the low I/O scores. I'd call that fixed, but like I said at the beginning of the thread, I don't have a stock experience to compare to. As soon as both the n7's in the house came in, they were rooted and tweaked
[Nexus 7 General] Captpt:
Well the dreaded lag has hit me. :(

Just have to note;

1:16 gig version

2: still completely stock(never rooted)

3: over 9 gig free and that's without ever uninstalling apps files or anything.
[Nexus 7 General] ÜBER™:
I've rebooted since no lag for me.

Yes im running Slim Bean with Franco Kernel
[Nexus 7 General] drpepe:
I had a look at the Google Groups page detailing the lag problems, seems google have known about it for several weeks at least. Any expectation of an official solution to these issues?

In related news, despite clearing more than 6gb of space my Random Write speed is now down to a new low of 0.01 and I have to wait 10 minutes after startup til my tablet becomes anywhere near usable :-$ ridiculous
[Nexus 7 General] yococs:
Guide

Sir jay can you post links or guide to your fix,im currently running on stock and still unrooted but im currently experiencing lag especially on the chrome browser and other apps... im on 3gb and lag suddenly hits
[Nexus 7 General] satek:
It's in his signature :)

I just used it on my lagging nexus, after following the steps my nexus has stopped chugging ridiculously when loading chrome or the play store!
[Nexus 7 General] Metallice:
No it's not... but I guess it can be confusing given his presence in the thread.

The "fix" we are talking about is JRO03R or 4.1.1r6... not zRam or data remounting or whatever is in his signature. This fix is available in the latest CM10/PA, rasbean, and others. It fixes the lag with low space issue (for most).
[Nexus 7 General] sg3707:
I have used motley kernel as suggested from jay thread and there is no lag. Have been testing it for the past 2 weeks. So I have done enough testing to confirm this. Now also using with 1gb storage remaining.
[Nexus 7 General] nakedninja42:
Interesting, the only time I have seen the lag is when I flashed CM10 update two days ago. Cleared data to be more than 3GB and rebooted and I was fine.
[Nexus 7 General] satek:
Ah, sorry! It's a strange feeling being forced to root and flash different fixes to get the smoothness of jellybean back. Nexus 7 is the first android device I've had that I didn't feel the immediate need to flash a custom firmware (after finding a simple screen rotate fix) because it just ran so perfectly... till the butter ran out.
[Nexus 7 General] joshtb86:
just installed AOKP r4, still have the lag issue except my #s are thee same but iot feels worse (random writes .03 or .01). anyone have any insight? i installed it with 3.5 gb available. can anyone comment on their performance with it

thanks.
[Nexus 7 General] Jay Aristide:
Don't fret too much, I'm sure there will be an official OTA update soon enough that fixes the issue.

In my opinion, though, you never realize the full potential of your device until you get a custom ROM, a custom kernel, and a good set of tweaks on it. Google does a GREAT job of giving Joe AverageUser an acceptable-for-the-masses/on-par-with-ios experience, but it's just a starting point for anyone technically-inclined enough to read and follow a few simple instructions. What makes the Android platform so amazing is what the community has done with it. I know plenty of people who don't have a clue technically who hand their devices over to me *as soon as they get them* just because they know when they get it back tomorrow, 'great' will have become 'EFFING AMAZING. zOMG HOW DID YOU DO THIS?!?'

They made it open source specifically so people would muck around with it and make it better :)
[Nexus 7 General] Beggars1923:
FYI - Google just offerred me a warranty replacement for this issue (purchased my device throught he Play Store). Problem is I don't want to exchange if the majority of the devices suffer from this and/or it will be fixed through an update.
[Nexus 7 General] sark666:
Hmm, I was of the thought that this did impact all devices and others just have not done the 'right' things to expose it yet. Maybe you should reply to gleam some info out of them, like ask them, what's the use of a replacement if all devices are impacted?
[Nexus 7 General] Beggars1923:
Your wish is my command and here is their response via email:

"Also, not all 16GB Nexus 7 tablets are experiencing this issue. This is a known issue, and we are working to resolve this."

I inquired into whether it was a hardware or software issue and the tech and there was no response.
[Nexus 7 General] ridearoundsolo:
Well I went back to stock rooted and everything just seems faster, I don't get why the custom Roms are actually slower than stock, but I guess that's good that Google is getting better at keeping us from using custom Roms because I feel they got it this time around, does the ROM being odexed also add some extra butter too?
[Nexus 7 General] Jay Aristide:
Yes, it does. Being odexed means that part of each system app gets preloaded, so that they load faster and give you a smoother experience.

I wholeheartedly disagree with several things you've said, though. Custom ROMs and custom ROM development are the whole reason Google 'got it right' this time. The Android development community is one of the best and biggest open source development communities in the world, and it's the input and work of this community that pushes the envelope and makes Android as great as it is. If it weren't for custom ROMs and ROM developers, Android wouldn't be a quarter of what it is, today.

Also, the nexus 7 is a *nexus* device. That means you get a pure aosp experience out of the box. On *most* devices, you get Android with whatever user-interface/setup the manufacturer thinks is best for you slathered on top of it with whatever bloatware the carrier touts as 'must have, must never delete' crammed into it, resulting in a less-than-awesome, definitely not what Google intended experience. In cases like this, if it weren't for custom ROMs and developers, people would be stuck on the crapware provided by carrier and manufacturers. There are over 150 devices with fully-functioning ICS or JellyBean ROMs right now that would be stuck on Honeycomb, Gingerbread, or even in a few cases, Froyo were it not for custom ROMs and developers.

I, for one, came to Android from iOS specifically because of these reasons, and thank the gods for the Android development community on a daily basis :)
[Nexus 7 General] ridearoundsolo:
Oh trust me I love flashing custom Roms another reason I chose android, its just this device that seems to do better IMO without custom Roms, but u are right the community is what keeps it lit, but what I really meant is I like that the stock experience is good enough to stay because my girlfriend for example would like a user experience that doesnt require anything custom but rather works right out of the box, which is upsetting at times because my HTC one s outperforms this tablet even with sense on top, also companies like Gameloft are making this device wack for gaming, its very upsetting knowing its a nexus device with a GAMING quad core chip but the gaming is lacking compared to stupid simple iOS
[Nexus 7 General] sark666:
Thanks! But now I'm curious as to why only some are impacted. Inferior memory in some?
[Nexus 7 General] kisrita:
My otherwise perfect Nexus 7 just got hit with this bug. I had less than 2gb space left when it started. Nothing I did helped till I did a factory reset. Thank God for this thread, I might have given up on Android if I thought that was the best Android can get. I saved a screenshot of the benchmarks I got after the bug in case it is helpful at all. Also, I had apps FC constantly after the bug hit, and I sent the bug report with each occurrence, so I hope that helps Google figure out what's wrong.
[Nexus 7 General] Jay Aristide:
Can't really fault Google because Gameloft is lazy, though. I know what you mean, though
[Nexus 7 General] TheScarecrow:
Look, there's not much to substantiate this but its been said that 4.1.6 is coming out on the 6th October to address this problem. Taken from productforums.google.com/ in case XDA won't let me post the link. Please don't shoot the messenger!

http://productforums.google.com/forum/#!topic/mobile/loqbCbKVMWE[176-200]
[Nexus 7 General] ridearoundsolo:
This is good news, hopefully that update will bring true speeds, still can't believe my HTC one s with sense smokes this tab, load up cm10 on the one s and its even more faster
[Nexus 7 General] ref1ux:
Good to hear there should be a fix out for this issue soon. My Nex7 is terribly, terribly slow. It feels like my parents 8 year old Windows PC most of the time, and my much less powerful GNex is far smoother. It's stupid... but if it gets fixed, all will be forgiven :)
[Nexus 7 General] Dorkington:
I'm keeping my fingers crossed, but that doesn't look too promising, since its not a real source.
[Nexus 7 General] ridearoundsolo:
I think its real, far too many complaints about this issue, google used this and the gnex to bring out jelly bean and well if the n7 is coming out as laggy as it is do u think that they want that to represent project butter? Only fix is a os update
[Nexus 7 General] yococs:
Anyone care to take a look at my results cant really make any of it just want to know anyones opinion,running on all stock none rooted with 4.1.1 update.....thanks

Sent from my Nexus 7
[Nexus 7 General] darkchazz:
You can't compare snapdragon S4 with the cheap Tegra3 trash.

......

I noticed my N7 UI is much much smoother when using a custom kernel w/ GPU OC.
[Nexus 7 General] Jay Aristide:
While the tegra3 is definitely less of a processor than the SD4, I surely wouldn't call it trash...
[Nexus 7 General] sark666:
I haven't read much about the S4 but this benchmark doesn't agree:

http://androidandme.com/2012/05/smartphones-2/htc-one-x-snapdragon-s4-vs-tegra-3-in-performance-gpu-battery-life-and-web-browsing/
[Nexus 7 General] ncvikingx97:
Kind of irrelevant, but how much storage do I need to download apps? I have 370 mob available but it won't let me download youtube
[Nexus 7 General] ridearoundsolo:
I'm only comparing because I own both devices and there was certainly more hype around the quad-core tegra 3 but I dont think its trash either its capable of producing great graphics I just believe it needs better optimization with the os but the s4 is amazing
[Nexus 7 General] irishrally:
... but you are missing a couple of GB. I have the same thing where the listed space available does not add up with the other numbers to make ~13GB and is different than the graphical space remaining in the bar at the top.

Mine says ~1.3GB available when the other numbers and the graphic up top says I should have around 5GB free.
[Nexus 7 General] Dukko:
It's the cache. The storage meter doesn't count it and install my case is pretty big (Google Music is all cache :P)
[Nexus 7 General] drpepe:
That makes sense as I had several big audio books pinned when I first noticed this 'missing storage' problem.

it doesn't excuse it though - how can the software possibly miss this ?
[Nexus 7 General] sark666:
If it is true that only some devices are affected, will it be easy to determine what this release (if it's coming on the 6th) is doing for only some devices? Like a memory type check and behave differently? This is another nice thing about open source to see what they are doing behind the scenes.
[Nexus 7 General] ExploreMN:
Perhaps, but it also has to do with the fact the storage meter doesn't count things outside of some specific directories. For example, I had a directory called EPPP that had about 8GB of MP3 files on the root of the storage area. My settings showed I was "missing" about 8.5GB. When I moved that directory in the "music" folder on the root, suddenly my storage measured correctly sans the half a GB there. So....
[Nexus 7 General] threi_:
Don't know how useful this info is, but with my tablet checking the benchmarks, the lag issue (write speed) disappears whenever you run the benchmark with the tablet plugged into the computer (android debugging on)
[Nexus 7 General] raggedstone:
Doesn't change anything for me.

I'm running completely stock, and noticed lag after I installed horn, which took down the free space. It's now showing 0.05 random writes on bench, and similarly poor other results. I think the degradation is probably gradual, but becomes unmistakable when space is low. It hasn't been improved by deleting stuff to free up space.

We browsing is basically unusable: constant notifications that the browser is not responsive. Even the launcher (nova) is delayed in loading.
[Nexus 7 General] danlo:
I've resorted to using Opera browser because either Android web browser or Chrome are both nearly unusable. What I did find though is that it's the javascript that's killing the performance. If you want to test out turning off javascript and see if your web browsing performance gets better. I know it's not a solution (it wasn't for me) but maybe just to confirm what I'm seeing as well?