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RE: OT: high WIO on Linux

From: <oracle-l-bounce_at_freelists.org>
Date: Wed, 15 Mar 2006 16:14:20 -0800
Message-ID: <5D2570CAFC98974F9B6A759D1C74BAD06FE4D3@ex2.ms.polyserve.com>

 >>>>>>Have you folks had any chance of trying out the different IO 

>>>>>>schedulers in 2.6? The anticipatory one seems to be the
>>>ticket for
>>>>>>FTS-oriented systems. RH has an article on some
>>>benchmarks they did
>>>>>>that seems to indicate the cfq is best overall for Oracle:

Oh, I forgot to mention that these algorithms usually no-op out on direct I/O, but we'll see. The whole bit about anticipatory is all about readahead which is useless with direct IO because it has not idea what to read.

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Received on Wed Mar 15 2006 - 18:14:20 CST

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