Hi,
Had the same issue as everyone else is experiencing and can confirm the instructions on the Jays buttery goodness thread work to resolve the issue. You need root though...

It's in the development forum

Sent from my Nexus 7 using xda app-developers app

I have not fully verified that this resolved the 'lag' issue but here's what i did...

I got a Nexus 7 16gb, running stock, rooted, running Franco Kernel R6.....

got about 2.6gb free...what i did is i turned off fsync(). screenshot as below

with fsync() on:



with fsync() off:

Turning off fsync which is done in Franco kernel or some other receipts for buttery smoothness is no real solution as it may cause data corruption. Device should be able to show acceptable IO performance without this tweak.

Sent from my Nexus 7 using xda app-developers app

Originally Posted by ChrisM001

Turning off fsync which is done in Franco kernel or some other receipts for buttery smoothness is no real solution as it may cause data corruption. Device should be able to show acceptable IO performance without this tweak.

Sent from my Nexus 7 using xda app-developers app

i agree but in this case, i think the 'problem' is not due to android OS itself (since my Galaxy Nexus yield no such problem) but more of a hardware 'defect'.....now i put quotes on the word defect because technically, the hardware in question, which is the flash storage in itself, is working and not really 'breaking down'. However granted that Asus uses cheaper flash memory with pretty bad IO speed, i think it's pretty much that there's not much we can do about it. I don't think RMA from google will help too. For now, all we can do is apply all these minor hacks and tweaks and hope that their component quality selection will be much better in future nexus devices.

Originally Posted by ChrisM001

Turning off fsync which is done in Franco kernel or some other receipts for buttery smoothness is no real solution as it may cause data corruption. Device should be able to show acceptable IO performance without this tweak.

Sent from my Nexus 7 using xda app-developers app

While I agree it should be able to show decent I/o out of the box, I will say I've been turning off fsync and remounting /data noauto_da_alloc for years and never had a problem. If it works to alleviate the problem then it works to alleviate the problem. While I accept and acknowledge there is a hardware defect somewhere in the nand on a lot of n7s, if this fix works for someone and they're happy, you've no business discounting it.

I'm thinking this is a launch-era hardware issue due to a dodgy memory controller or something (or Asus cutting corners to meet demand). If people would be so kind as to post their build date/ serial from the inside of the back plate I'd appreciate it, maybe we can narrow it down to a release hardware problem and know we could replace it with newer units.

Mine:
Build date 2012/05/26
14007-00530400
3DC

I have to admit, I loved my N7 since day 1 and would sing to its glory, but the lag is getting a little annoying. For example, this thing simply cannot download an app in the background and install it without hanging the whole system. I mean seriously, my G1 was able to do that and the Fascinate I have laying around the house that's what, 3-4 years old now...no problem. I can't sync email while browsing the web, etc. So even though I have no other issues at all, I might be calling Asus today. This is simply getting too bad and there is zero evidence that Asus or Google is addressing the issue.

Sent from my Nexus 7 using Tapatalk 2

Hey all, I have come to the conclusion that if I have a root and cwm my device becomes laggy after some heavy gaming or useage. I relocked and went unrooted and no lag appears at all.
Not sure if it's a particular root app doing it or what. I just got my second n7 and will test both and report back

Sent from either Galaxy S3 intl or Nexus 7
both on stock at the moment!!

---------- Post added at 03:50 PM ---------- Previous post was at 03:49 PM ----------

Originally Posted by ExploreMN

I have to admit, I loved my N7 since day 1 and would sing to its glory, but the lag is getting a little annoying. For example, this thing simply cannot download an app in the background and install it without hanging the whole system. I mean seriously, my G1 was able to do that and the Fascinate I have laying around the house that's what, 3-4 years old now...no problem. I can't sync email while browsing the web, etc. So even though I have no other issues at all, I might be calling Asus today. This is simply getting too bad and there is zero evidence that Asus or Google is addressing the issue.

Sent from my Nexus 7 using Tapatalk 2

Mine downloads and works fine. But even then, I don't usually do much when downloading.

Sent from either Galaxy S3 intl or Nexus 7
both on stock at the moment!!

Originally Posted by JNeail

So from what I can read here we're not yet clear on whats causing the slowdown/lag issue but with many thoughts linking this to free space?

My Nexus is:
- 16GB UK Version
- 1.8gb of free space (having deleted lots of stuff now now I've forced Google play/music to work in the UK)
- stock ROM
- not rooted
- has nothing odd loaded (twitter/facebook/onenote/a few other bits etc) and all from the official play.Google.com store except flash and BBC iPlayer (sourced from this forum)

Seems there may be other theories other than ram and io speed issues, but (and having called/mailed for support), both Google and Asus don't acknowledge these issues, yet the internet is rife with tails of woe like ours here!

So my question is - what are we able to do about it? Is here a way to en-mass register a complaint, surely there is a is patch that can fix this that Google can issue. I can't believe h/w is at fault here as the device isn't that unusual I.e same components in many other manufactured devices. Yet something is wrong, perhaps a petition, any takers?


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Have spoken again to Asus UK Support today - and they have passed my issue to 2nd-line support but at this stage are still claiming to be unaware of any issues! Advise from support agent was to ensure I always ensure adequate free space, otherwise, just like a PC the device is likely to go slow....!! I did remind him of th 13.2GB I get to play with that means I only get around 10 before I run in to trouble - he didn't flinch!

Experienced unusable laggy after storage space dropped to under 5Gb. After did the backup, unlock, root, factory reset, back to lighting speed.

Hopefully Google or Asus can release the fix soon.

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