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Re: AIX slow buffer reads - Mailing list pgsql-performance

From Tom Lane
Subject Re: AIX slow buffer reads
Date
Msg-id 26542.1288210215@sss.pgh.pa.us
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In response to Re: AIX slow buffer reads  (Greg Smith <greg@2ndquadrant.com>)
Responses Re: AIX slow buffer reads  (Brad Nicholson <bnichols@ca.afilias.info>)
List pgsql-performance
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Greg Smith <greg@2ndquadrant.com> writes:
> André Volpato wrote:
>> I disabled effective_io_concurrency at AIX but it made no changes on bitmap index times.

> Brad's point is that it probably doesn't do anything at all on AIX, and
> is already disabled accordingly.

AFAICT from googling, AIX does have posix_fadvise, though maybe it
doesn't do anything useful ...

            regards, tom lane

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