[Nexus 7 General] hexxellor:
My Results

OK, so I went ahead and did a few tests to see if flashing and doing various things would help.

I can confirm that flashing helped SOME for me initially, because I was getting timeouts on network connections, applications were so slow they were not usable, and even the Android UI (such as the settings screen) would stop responding and ask if I wanted to close it. Flash back to stock DID help for that, however, as you'll see below my benchmark results are not encouraging. :(

EDIT: Before I did flash back to stock the first time I was getting results VERY close to what burnduck just reported. Notice how the browser and camcorder values are really high? Mine were like that too but then I wasn't able to do anything else without wanting to throw the Nexus through the wall because it was so slow. Even AndroBench crashed when it was trying to prepare for testing before I had initially flashed.

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Status: Rooted, Before any recent repair attempts. All apps I used installed except as noted.

NOTE: Since people had wondered about certain programs and if they were causing the problem I went ahead and ran the benchmark and then I froze Google Currents, Google Wallet, set my IO scheduler to deadline and uninstalled SwiftKey. The results were extremely similar to the ones I got before I did all of that. The following are my results after freezing those apps:

27.41MB/s READ

11.22MB/s WRITE

8.02MB/s, 2054.82 io/s READ

0.48MB/s, 123.18 io/s WRITE

56.0 SQL INSERT

56.6 SQL UPDATE

59.35 SQL DELETE

102.0 BROSWER

265.0 MARKET

357.75 CAMERA

745.5 CAMCORDER

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Status: Performed a factory reset via the Android Settings menu. Still rooted, but it erased almost everything else.

NOTE: I also rebooted to recovery (ClockworkMod) and tried to do the same thing, including all possible cache wiping but got nearly identical results so I didn't bother recording them.

26.2MB/s READ

10.59MB/s WRITE

7.91MB/s, 2027.5 io/s READ

0.49MB/s, 126.21 io/s WRITE

53.33 SQL INSERT

57.78 SQL UPDATE

60.38 SQL DELETE

102.75 BROSWER

269.5 MARKET

299.0 CAMERA

724.0 CAMCORDER

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Status: Finally, I grabbed the stock images from Google's developer site (v4.1.1) and erased EVERYTHING, flashing back to stock, wiping all data and then to put a damn cherry on top I even re-locked the bootloader. Now everything should be like when I got it, right? No more root, no nothing. Just installed AndroBench and tried again getting these results:

24.95MB/s READ

10.61MB/s WRITE

8.1MB/s, 2075.95 io/s READ

0.51MB/s, 131.01 io/s WRITE

57.7 SQL INSERT

65.7 SQL UPDATE

67.95 SQL DELETE

103.25 BROSWER

253.25 MARKET

271.0 CAMERA

643.0 CAMCORDER

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So there you go.... It still has terrible write performance, etc. Honestly it didn't "feel" horrible but it the part that kills me is going in to the comparison on the AndroBench shows other people are getting MUCH higher results on their Nexus 7. Of course they could be running custom stuff and skewing the results, but I have no good way to know that.

Is anyone getting much better results here with a stock rom?

I hope this helps!