Re: track_io_timing default setting

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: track_io_timing default setting
Date: 2021-12-10 15:20:26
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Jeff Janes <jeff(dot)janes(at)gmail(dot)com> writes:
> Can we change the default setting of track_io_timing to on?

That adds a very significant amount of overhead on some platforms
(gettimeofday is not cheap if it requires a kernel call). And I
doubt the claim that the average Postgres user needs this, and
doubt even more that they need it on all the time.
So I'm -1 on the idea.

regards, tom lane

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