Re: aio-stress throughput regressions from 2.6.11 to 2.6.12

[Benjamin LaHaise]

On Fri, Jul 01, 2005 at 01:26:00PM +0530, Suparna Bhattacharya wrote:
> On one test system I see a degradation from around 17+ MB/s to 11MB/s
> for random O_DIRECT AIO (aio-stress -o3 testext3/rwfile5) from 2.6.11
> to 2.6.12. It doesn't seem filesystem specific. Not good :(

What sort of io subsystem does it have?  Also, does changing the 
elevator make any difference?  I'm away for the long weekend, but will 
help look into this next week.

		-ben
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