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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Greg Smith <greg@2ndquadrant.com>
Cc: André Volpato <andre.volpato@ecomtecnologia.com.br>
Cc: Brad Nicholson <bnichols@ca.afilias.info>
Cc: pgsql-performance@postgresql.org
Subject: Re: AIX slow buffer reads
Date: Wed, 27 Oct 2010 16:10:15 -0400
Message-ID: <26542.1288210215@sss.pgh.pa.us> (raw)
In-Reply-To: <4CC87C69.5070301@2ndquadrant.com>
References: <1141414014.10692.1288199109474.JavaMail.root@zimbra01a>
	<4CC87C69.5070301@2ndquadrant.com>

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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