From: Jim C. Nasby <decibel@decibel.org>
To: Merlin Moncure <mmoncure@gmail.com>
Cc: Tarhon-Onu Victor <mituc@iasi.rdsnet.ro>
Cc: pgsql-performance@postgresql.org
Subject: Re: 500 requests per second
Date: Mon, 21 May 2007 15:46:55 -0500
Message-ID: <20070521204655.GL62346@nasby.net> (raw)
In-Reply-To: <b42b73150705211250w61f9737ele7c498d8e1517ed3@mail.gmail.com>
References: <Pine.LNX.4.64.0705120936580.29679@oynpxoyhr.vnfv.npgvirzrqvngrpu.pbz>
<b42b73150705211250w61f9737ele7c498d8e1517ed3@mail.gmail.com>
On Mon, May 21, 2007 at 03:50:27PM -0400, Merlin Moncure wrote:
> I work on a system about like you describe....400tps constant....24/7.
> Major challenges are routine maintenance and locking. Autovacuum is
> your friend but you will need to schedule a full vaccum once in a
> while because of tps wraparound. If you allow AV to do this, none of
> your other tables get vacuumed until it completes....heh!
BTW, that's changed in either 8.2 or 8.3; the change is that freeze
information is now tracked on a per-table basis instead of per-database.
So autovacuum isn't forced into freezing everything in the database at
once.
--
Jim Nasby decibel@decibel.org
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
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To: pgsql-performance@postgresql.org
Cc: decibel@decibel.org, mmoncure@gmail.com, mituc@iasi.rdsnet.ro
Subject: Re: 500 requests per second
In-Reply-To: <20070521204655.GL62346@nasby.net>
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