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To: "Jeffrey Baker" <jwbaker@gmail.com>
cc: pgsql-performance@postgresql.org
Subject: Re: 3-days-long vacuum of 20GB table 
In-reply-to: <fd145f7d0804180935w7d0052degf79a9660b043c084@mail.gmail.com> 
References: <fd145f7d0804180935w7d0052degf79a9660b043c084@mail.gmail.com>
Comments: In-reply-to "Jeffrey Baker" <jwbaker@gmail.com>
	message dated "Fri, 18 Apr 2008 09:35:42 -0700"
Date: Fri, 18 Apr 2008 13:03:58 -0400
Message-ID: <3630.1208538238@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"Jeffrey Baker" <jwbaker@gmail.com> writes:
> This autovacuum has been hammering my server with purely random i/o
> for half a week.  The table is only 20GB and the i/o subsystem is good
> for 250MB/s sequential and a solid 5kiops.  When should I expect it to
> end (if ever)?

What have you got maintenance_work_mem set to?  Which PG version
exactly?

			regards, tom lane