From: Tom Lane <tgl@sss.pgh.pa.us>
To: Michel SALAIS <msalais@msym.fr>
Cc: 'Julien Rouhaud' <rjuju123@gmail.com>
Cc: 'postgres performance list' <pgsql-performance@postgresql.org>
Subject: Re: sql execution time in pg_stat_statements
Date: Fri, 10 Sep 2021 13:42:08 -0400
Message-ID: <4078764.1631295728@sss.pgh.pa.us> (raw)
In-Reply-To: <007201d7a667$1516d860$3f448920$@msym.fr>
References: <005f01d7a5a6$67784b50$3668e1f0$@msym.fr>
<006601d7a5ab$6e01c780$4a055680$@msym.fr>
<CAOBaU_Zn5V7vsFaTZKjJgFCb5hQPAQNqV1ro-Kw-VE9n5zBzVQ@mail.gmail.com>
<007201d7a667$1516d860$3f448920$@msym.fr>
"Michel SALAIS" <msalais@msym.fr> writes:
> I thaught that total_time (total_exec_time + total_plan_time) included I/O but when we have blk_read_time + blk_write_time equals several times total_time it is difficult to continue to think that...
That's an interesting report, but on the whole I'd be more inclined
to disbelieve the I/O timings than the overall time. Can you create
a reproducible test case where this happens? Also, exactly what
PG version and pg_stat_statements version are you using?
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, msalais@msym.fr, rjuju123@gmail.com
Subject: Re: sql execution time in pg_stat_statements
In-Reply-To: <4078764.1631295728@sss.pgh.pa.us>
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