Re: Why would writes to pgsql_tmp bottleneck at 1mb/s?

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Why would writes to pgsql_tmp bottleneck at 1mb/s?
Date: 2005-03-09 00:17:57
Message-ID: 200503081617.57190.josh@agliodbs.com
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> As you can see, we're getting a nice 23mb/s peak for WAL (thanks to
> forcedirectio) and database writes peak at 6mb/s. However, pgsql_tmp,
> which is being used heavily, hovers around 1mb/s, and never goes above
> 1.5mb/s. This seems to be throttling the whole system.

Never mind, I'm a dork. I accidentally cut the "SET maintenance_work_mem =
2000000" out of my config file, and it was running with the default
1024K ....

--
--Josh

Josh Berkus
Aglio Database Solutions
San Francisco

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