From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
---|---|
To: | Adriaan van Os <postgres(at)microbizz(dot)nl> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: TRUNCATE TABLE |
Date: | 2007-08-01 15:11:39 |
Message-ID: | 20070801151139.GE6165@alvh.no-ip.org |
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Thread: | |
Lists: | 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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