RE: OT: high WIO on Linux

  • To: <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 15 Mar 2006 16:14:20 -0800

 >>>>>>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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