From: | Thomas Finneid <tfinneid(at)student(dot)matnat(dot)uio(dot)no> |
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To: | Greg Smith <gsmith(at)gregsmith(dot)com> |
Cc: | Thomas Finneid <tfinneid(at)student(dot)matnat(dot)uio(dot)no>, pgsql-performance(at)postgresql(dot)org |
Subject: | Re: slow update of index during insert/copy |
Date: | 2008-09-02 06:39:24 |
Message-ID: | 48BCDF9C.5020906@ifi.uio.no |
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Lists: | pgsql-performance |
Greg Smith wrote:
> On Mon, 1 Sep 2008, Thomas Finneid wrote:
Thanks for all the info on the disk controller, I will have to look
through all that now :)
> I note that nobody has talked about your postgresql.conf yet. I assume
> you've turned autovacuum off because you're not ever deleting things
> from these tables.
That is correct.
> You'll still need to run VACUUM ANALYZE periodically
> to keep good statistics for your tables, but I don't think that's
will look at it.
> You should try setting this to open_sync , that can be considerably
> faster for some write-heavy situations. Make sure to test that
> throughly though, there are occasional reports of issues with that
> setting under Linux; seems to vary based on kernel version. I haven't
> had a chance to test the Ubuntu Hardy heavily in this area yet myself.
The production machine is Solaris 10 running on a Sun v980. Do you know
of it has any issues like these?
Additionally, would I need to do any config changes when going from
linux to solaris?
The v980 has got lots of memory and a FC disk system, but I don't know
much more about controllers and disk etc. But I suspects its got at
least the same features as the disks and controller thats in the devel
machine.
regards
thomas
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