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From: Mathieu Othacehe <othacehe@gnu.org>
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: 43850@debbugs.gnu.org
Subject: bug#43850: cuirass: inconsistent SQL queries execution time.
Date: Sun, 01 Nov 2020 19:23:14 +0100	[thread overview]
Message-ID: <87v9epkkbx.fsf@gnu.org> (raw)
In-Reply-To: <87wnz7xbej.fsf@gmail.com> (Maxim Cournoyer's message of "Sat, 31 Oct 2020 00:33:08 -0400")


Hey Maxim,

> Perhaps we should run 'vacuum' when invoking 'guix gc' or at some other
> key places (where lots of data gets removed from the DB).  There's also
> the auto_vacuum PRAGMA, which is not enabled currently:

Vacuuming periodically seems important, however, it didn't resulted in
noticeable improvements during high I/O pressure when I tested it.

I still think that we should vacuum periodically, even though it means
that all database writes are postponed during the duration of the
vacuuming.

Having a separate fiber in charge of that operation could work I guess.

Thanks,

Mathieu




      reply	other threads:[~2020-11-01 18:24 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-07 16:04 bug#43850: cuirass: inconsistent SQL queries execution time Mathieu Othacehe
2020-10-14 16:53 ` Mathieu Othacehe
2020-10-20 11:45   ` Mathieu Othacehe
2020-10-22 11:49     ` Mathieu Othacehe
2020-10-26 22:59       ` Ludovic Courtès
2020-10-27  9:28         ` Christopher Baines
2020-10-27 14:10           ` Mathieu Othacehe
2020-10-27 18:11             ` Mathieu Othacehe
2021-03-25 12:46               ` Mathieu Othacehe
2020-10-31  4:33             ` Maxim Cournoyer
2020-11-01 18:23               ` Mathieu Othacehe [this message]

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