Re: index file bloating still in 7.4 ?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Seum-Lim Gan <slgan(at)lucent(dot)com>
Cc: josh(at)agliodbs(dot)com, pgsql-performance(at)postgresql(dot)org
Subject: Re: index file bloating still in 7.4 ?
Date: 2003-10-19 05:48:29
Message-ID: 17172.1066542509@sss.pgh.pa.us
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Seum-Lim Gan <slgan(at)lucent(dot)com> writes:
> INFO: vacuuming "craft.dsperf_rda_or_key"
> INFO: index "hello242_1105" now contains 1792276 row versions in 6237 pages
> DETAIL: 0 index pages have been deleted, 0 are currently reusable.
> CPU 0.61s/0.36u sec elapsed 17.92 sec.
> INFO: "hello_rda_or_key": found 0 removable, 1791736 nonremovable
> row versions in 30892 pages
> DETAIL: 1492218 dead row versions cannot be removed yet.

You still haven't got an index-bloat problem. I am, however, starting
to wonder why you have so many dead-but-unremovable rows. I think you
must have some client process that's been holding an open transaction
for a long time.

regards, tom lane

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