Re: [HACKERS] Trivial patch to double vacuum speed on tables with no indexes

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Gregory Stark <stark(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org, pgsql-patches(at)postgresql(dot)org
Subject: Re: [HACKERS] Trivial patch to double vacuum speed on tables with no indexes
Date: 2006-09-04 21:45:28
Message-ID: 13384.1157406328@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers pgsql-patches

Bruce Momjian <bruce(at)momjian(dot)us> writes:
> Patch applied. Thanks.

Wait a minute. This patch changes the behavior so that
LockBufferForCleanup is applied to *every* heap page, not only the ones
where there are removable tuples. It's not hard to imagine scenarios
where that results in severe system-wide performance degradation.
Has there been any real-world testing of this idea?

regards, tom lane

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Bruce Momjian 2006-09-04 21:47:02 Re: [HACKERS] Trivial patch to double vacuum speed
Previous Message Bruce Momjian 2006-09-04 21:43:43 Re: [PATCHES] Documentation fix for --with-ldap

Browse pgsql-patches by date

  From Date Subject
Next Message Bruce Momjian 2006-09-04 21:47:02 Re: [HACKERS] Trivial patch to double vacuum speed
Previous Message Bruce Momjian 2006-09-04 21:40:25 Re: [HACKERS] Trivial patch to double vacuum speed