Re: Memory usage of auto-vacuum
От | Guillaume Lelarge |
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Тема | Re: Memory usage of auto-vacuum |
Дата | |
Msg-id | 1310202377.2101.15.camel@laptop обсуждение исходный текст |
Ответ на | Re: Memory usage of auto-vacuum (Gael Le Mignot <gael@pilotsystems.net>) |
Ответы |
Re: Memory usage of auto-vacuum
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Список | pgsql-performance |
On Sat, 2011-07-09 at 11:00 +0200, Gael Le Mignot wrote: > Hello Guillaume! > > Sat, 09 Jul 2011 10:53:14 +0200, you wrote: > > > I don't quite understand how you can get up to 1GB used by your process. > > According to your configuration, and unless I'm wrong, it shouldn't take > > more than 40MB. Perhaps a bit more, but not 1GB. So, how did you find > > this number? > > Looking at "top" we saw the postgres process growing and growing and > then shrinking back, and doing a "select * from pg_stat_activity;" in > parallel of the growing we found only the "vacuum analyze" query running. > There is not only one postgres process. So you first need to be sure that it's the one that executes the autovacuum. > But maybe we drawn the conclusion too quickly, I'll try disabling the > auto vacuum to see if we really get rid of the problem doing it. > Disabling the autovacuum is usually a bad idea. You'll have to execute VACUUM/ANALYZE via cron, which could get hard to configure. BTW, what's your PostgreSQL release? I assume at least 8.3 since you're using FTS? -- Guillaume http://blog.guillaume.lelarge.info http://www.dalibo.com
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