From: Bobby Mozumder <bmozumder@gmail.com>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Possible to find disk IOs for a Query?
Date: Wed, 31 Aug 2016 18:01:19 -0400
Message-ID: <EF9FCE30-FF02-41BE-A616-C099DF9DDE97@gmail.com> (raw)
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Is it possible to find the number of disk IOs performed for a query? EXPLAIN ANALYZE looks like it shows number of sequential rows scanned, but not number of IOs.
My database is on an NVMe SSD, and am trying to cut microseconds of disk IO per query by possibly denormalizing.
Thank you,
-bobby
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To: pgsql-performance@postgresql.org
Cc: bmozumder@gmail.com
Subject: Re: Possible to find disk IOs for a Query?
In-Reply-To: <EF9FCE30-FF02-41BE-A616-C099DF9DDE97@gmail.com>
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