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Before I return this unit as defective (slow I/O)

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By madelk, Junior Member on 1st August 2012, 02:28 PM
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Ever since I got my Nexus 7 I noticed it was a little on the slow side, when playing 3D games I experienced a lot of freezing and issues when it was loading in new textures but more recently I've noticed these issues get worse. Downloading an app is tremendously slow with it taking several minutes to download just a few meg while my phone completes the same task in seconds. From what I've been able to deduce it seems like an I/O issue as my Quadrant score is just barely over 700 when an average appears to be at least double that. It also took several attempts to download Quadrant as the package file kept coming back as invalid when downloading from the market.

Is there anything I'm missing here that I should try? I rooted the device a week or so ago but I don't see how that could of borked it (but I'm not a doctor). I've also tried searching for others having this issue, but trying to search for "Nexus 7 I/O" brings up mostly hits about the announcement

UPDATE: I've just finally got AndroBench installed, here are the horrific results.
MICRO
SEQ RD: 17.83 MB/s
SEQ WR: 0.56 MB/s
RND RD: 1548.85 IOPS(4K)
RND WR: 33.0 IPOS(4K)

SQLite
Insert: 1.36 TPS
Update: 3.29 TPS
Delete: 3.17 TPS

UPDATE2: After a full wipe I'm scoring this:
MICRO
SEQ RD: 12.29 MB/s
SEQ WR: 7.8 MB/s
RND RD: 753.66 IOPS(4K)
RND WR: 74.12 IPOS(4K)

SQLite
Insert: 27.74 TPS
Update: 26.15 TPS
Delete: 28.92 TPS
Last edited by madelk; 1st August 2012 at 03:26 PM. Reason: Added AndroBench(marks)
 
 
1st August 2012, 02:31 PM |#2  
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i would try flashing stock and starting over from fresh out of the box. The return process is bothersom and if for some reason this fixes it, you save yourself a lot of headache. Plus if you return it, you're gonna wanna be unrooted and locked anyways
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1st August 2012, 02:35 PM |#3  
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Quote:
Originally Posted by AuxiliaryPie

i would try flashing stock and starting over from fresh out of the box. The return process is bothersom and if for some reason this fixes it, you save yourself a lot of headache. Plus if you return it, you're gonna wanna be unrooted and locked anyways

I am running a stock ROM and I didn't install a bootloader. I figured that the device was cool enough that I really didn't want to mess with custom ROMs anyhow. But you're right, no reason not to wipe it if I'm going to return it anyhow.
1st August 2012, 03:28 PM |#4  
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After a full wipe some of my scores have improved and apps are installing faster, but these scores still seem a little lame.
Can any other Nexus 7 owners out there offer their own for comparison?
1st August 2012, 04:25 PM |#5  
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not a benchmark guy but will install this app and let you know my results

EDIT here they are

MICRO
SEQ RD: 28.76 MB/s
SEQ WR: 11.25 MB/s
RND RD: 1927.82 IOPS(4K)
RND WR: 133.32 IPOS(4K)

SQLite
Insert: 60.65 TPS
Update: 65.74 TPS
Delete: 68.82 TPS
Last edited by y2whisper; 1st August 2012 at 04:30 PM.
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10th September 2012, 03:10 AM |#6  
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I have opened a case with Asus about this. Please do the same if the i/o slowdown is happening to your Nexus 7.
If anyone knows how to open a case with Google, please post.
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10th September 2012, 10:55 AM |#7  
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Here is my results on a week old C80 model with only 500mb left

Sent from my Nexus 7 using Tapatalk 2
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10th September 2012, 11:23 AM |#8  
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Quote:
Originally Posted by E_Goldstein

Here is my results on a week old C80 model with only 500mb left

Sent from my Nexus 7 using Tapatalk 2

Your device is sloooow.. too much stuff installed im guessing

Sent from my Optimus 2X using Tapatalk 2
10th September 2012, 12:11 PM |#9  
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Quote:
Originally Posted by Mungulz

Your device is sloooow.. too much stuff installed im guessing

Sent from my Optimus 2X using Tapatalk 2

I guess it is but everything loads fine, and quick enough its just full of games waiting from my 64gig flash drive to arrive so i can play them all from that, but ive got no problems

Sent from my Nexus 7 using Tapatalk 2
12th September 2012, 06:12 AM |#10  
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I and maybe others have managed to get an article published on The Register.

http://www.theregister.co.uk/2012/09/11/nexus_7/

However the commentards have missed the issue and think that owners are bleating that they only have 13GB and not 16GB or that it runs slow when 99% full.

Please comment on the article that write performance is still a tenth of what it should be, even when the file system is cleared down so that lots of space is free.
So far the only solution is a factory reset.
12th September 2012, 06:40 AM |#11  
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It's well known Asus' tabs have poor I/O performance... its been discussed for awhile now, if you think its bad on the 7, you'd really hate the Prime or Transformer series..

http://www.androidpolice.com/2012/07...d-in-13-tests/
http://forum.xda-developers.com/show....php?t=1595531
http://forum.xda-developers.com/show....php?t=1757765
http://www.anandtech.com/show/6073/t...xus-7-review/6

Quote:

More recently users have been noticing very poor performance with ASUS Android tablets whenever there's substantial background IO going on, particularly multitasking while writes are taking place (e.g. downloading a torrent and browsing the web). The slowdowns range from multi-second long pauses to sluggish response time.

Last edited by NeoMagus; 12th September 2012 at 06:42 AM.

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