Re: Random file I/O regressions in 2.6 [patch+results]

Alexey Kopytov
2004-05-21T19:32:38Z

On Thursday 20 May 2004 05:31, Ram Pai wrote:
>On Wed, 2004-05-19 18:06, Alexey Kopytov wrote:
>> Ram, can you clarify the status of this patch please?
>>
>> I ran the same sysbench test on my hardware with patched 2.6.6 and got
>> 122.2348s execution time, i.e. almost the same results as in the original
>> tests. Is this patch an intermediate step to improve the sysbench workload
>> on 2.6, or it just addresses another problem?
>
>this patch by itself does not address your problem. Your problem is
>better addressed by Andrew's 'readahead-private' patch.
>
>However; this patch applied on top of Andrew's 'readahead-private' patch
>may get you some extra performance.
>
>Can you confirm this please?

Yes.

2.6.6-rc3 + Andrew's patch:

Time spent for test: 86.5459s

2.6.6-bk:

Time spent for test: 83.1929s

Thanks for clarifying!

--
Alexey Kopytov, Software Developer
MySQL AB, www.mysql.com

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