From: Tom Lane <tgl@sss.pgh.pa.us>
To: Matthew T. O'Connor <matthew@zeut.net>
Cc: Mikael Carneholm <Mikael.Carneholm@WirelessCar.com>
Cc: Postgresql Performance <pgsql-performance@postgresql.org>
Subject: Re: count(*) performance
Date: Mon, 27 Mar 2006 18:13:48 -0500
Message-ID: <24743.1143501228@sss.pgh.pa.us> (raw)
In-Reply-To: <44286A76.5010008@zeut.net>
References: <7F10D26ECFA1FB458B89C5B4B0D72C2B088295@sesrv12.wirelesscar.com>
<44286A76.5010008@zeut.net>
"Matthew T. O'Connor" <matthew@zeut.net> writes:
> It is fairly easy to implement, however it has been discussed before and
> decided that it wasn't necessary. What the system cares about is how
> long it's been since the last vacuum in terms of XIDs not time.
I think Alvaro is intending to do the latter (store per-table vacuum xid
info) for 8.2.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, matthew@zeut.net, Mikael.Carneholm@WirelessCar.com
Subject: Re: count(*) performance
In-Reply-To: <24743.1143501228@sss.pgh.pa.us>
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