Re: TRUNCATE TABLE

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От Alvaro Herrera
Тема Re: TRUNCATE TABLE
Дата
Msg-id 20070801151139.GE6165@alvh.no-ip.org
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Ответ на Re: TRUNCATE TABLE  (Adriaan van Os <postgres@microbizz.nl>)
Список pgsql-performance
Adriaan van Os wrote:
> Tom Lane wrote:
>
>> Somehow, autovac is doing something that makes the filesystem go nuts
>> every so often, and take an astonishingly long time to create an empty
>> file.  But autovac itself doesn't create or delete any files, so what's
>> up here?
>> Also, I was able to reproduce the variability in timing on HPUX and
>> Darwin as well as Linux, so we can't put all the blame on ext3.
>> (I didn't drill down to the strace level on the other two machines,
>> though, so it's possible that there is a different mechanism at work
>> there.)
>
> Any news since this message ? Should I file a bug report ?

Were you able to show that turning off autovacuum removes the
performance problem?

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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