Vacuum taking an age - Mailing list pgsql-admin

From Brian Modra
Subject Vacuum taking an age
Date
Msg-id 5a9699850801030448k126a5028m85ddb2153e95184f@mail.gmail.com
Whole thread Raw
Responses Re: Vacuum taking an age  (Pascal Heraud <heraud@tatm.com>)
Re: Vacuum taking an age  ("Scott Marlowe" <scott.marlowe@gmail.com>)
Re: Vacuum taking an age  (Guido Neitzer <lists@event-s.net>)
List pgsql-admin
Hi,


I have a pretty "live" table: rows being inserted and updated more
than once 1 per second, though far, far more inserts than updates.

There are currently over 3 million rows.

It has not been vacuumed for months.

Now a vacuum on that table takes hours, and I have not let it complete
because it stays running into our daily busy time... but I've been
told its necessary because the table is slowing down.

I have begun a cron job which will do a daily analyze, and am thinking
of a weekly vacuum...
Please advise on the best way to keep this table maintained, even if
it means regularly taking the service offline early on Sunday
morning...

thanks in advance
Brian

--
Brian Modra   Land line: +27 23 5411 462
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6 Jan Louw Str, Prince Albert, 6930
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South Africa

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