Re: pg_autovacuum and VACUUM FREEZE

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Matthew T(dot) O'Connor" <matthew(at)zeut(dot)net>
Cc: Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_autovacuum and VACUUM FREEZE
Date: 2003-10-16 14:13:42
Message-ID: 18950.1066313622@sss.pgh.pa.us
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"Matthew T. O'Connor" <matthew(at)zeut(dot)net> writes:
> The vacuum man page says, "FREEZE is not recommnded for routine use".
> That was enough to keep me away. However if vacuum freeze was
> considerably lighter than normal database wide vacuums then there might
> be an advantage to using it.

If anything it would be slower than normal vacuum (more pages touched).
I concur with just using plain VACUUM to deal with impending wraparound.

regards, tom lane

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