| From: | Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: lock contention on parallel COPY ? |
| Date: | 2008-09-26 17:53:03 |
| Message-ID: | 48DD217F.6040404@kaltenbrunner.cc |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> writes:
>> that one generates a huge amount of logs - output for ~60s into the load
>> is available here:
>> http://www.kaltenbrunner.cc/files/lwstats.txt (21MB!)
>
> Huh ... essentially all the contention is for OidGenLock. I take it
> you're loading into a table that has OIDs?
hmm that particular database has its ancient roots on 7.3 (or 7.4) and
indeed it seems that some tables in the dump are preceeded by a SET
default_with_oids = true;
Will go and elimited those and try again.
Stefan
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