Re: psql large RSS (1.6GB)
От
Markus Bertheau
Тема
Re: psql large RSS (1.6GB)
Дата
Msg-id
1099218421.2636.0.camel@teetnang
Ответ на
psql large RSS (1.6GB) (TTK Ciar)
Список
Дерево обсуждения
psql large RSS (1.6GB) TTK Ciar <ttk2@hardpoint.ciar.org>
Re: psql large RSS (1.6GB) Markus Bertheau <twanger@bluetwanger.de>
Re: psql large RSS (1.6GB) Dustin Sallings <dustin@spy.net>
Re: psql large RSS (1.6GB) Gavin Sherry <swm@alcove.com.au>
Re: psql large RSS (1.6GB) Bruce Momjian <pgman@candle.pha.pa.us>
Re: psql large RSS (1.6GB) Tom Lane <tgl@sss.pgh.pa.us>
Re: psql large RSS (1.6GB) Josh Berkus <josh@agliodbs.com>
В Срд, 27.10.2004, в 09:57, TTK Ciar пишет:
> brad=# explain analyse select ServerDisks.servername,ServerDisks.diskserial,ServerDisks.diskmountpoint,DiskFiles.name,DiskFiles.md5 from DiskFiles,ServerDisks where DiskFiles.diskserial=ServerDisks.diskserial;
> QUERY PLAN
> ------------------------------------------------------------------
> Hash Join (cost=22.50..65.00 rows=1000 width=274) (actual time=118.584..124653.729 rows=10133349 loops=1)
> Hash Cond: (("outer".diskserial)::text = ("inner".diskserial)::text)
> -> Seq Scan on diskfiles (cost=0.00..20.00 rows=1000 width=198) (actual time=7.201..31336.063 rows=10133349 loops=1)
> -> Hash (cost=20.00..20.00 rows=1000 width=158) (actual time=90.821..90.821 rows=0 loops=1)
> -> Seq Scan on serverdisks (cost=0.00..20.00 rows=1000 width=158) (actual time=9.985..87.364 rows=2280 loops=1)
> Total runtime: 130944.586 ms
You should run ANALYZE on your database once in a while.
--
Markus Bertheau
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