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Re: Queries sometimes take 1000 times the normal time

From: Rod Taylor <rbt(at)rbt(dot)ca>
To: "Anders K(dot) Pedersen" <akp(at)cohaesio(dot)com>
Cc: Postgresql Performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Queries sometimes take 1000 times the normal time
Date: 2003-08-28 18:33:24
Message-ID: 1062095603.79027.205.camel@jester (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
> With regards to other jobs on the server, there is a MySQL server on it 
> as well, which from time to time has some multi-second queries generated 
> from a webserver also on this host, but the MySQL is running with nice 
> 10 (PostgreSQL isn't nice'd).

Do those MySQL queries hit disk hard?

I've never seen PostgreSQL have hicups like you describe when running on
a machine by itself.  I have experienced similar issues when another
process (cron job in my case) caused brief swapping to occur.

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Subject: Re: Simple queries take forever to run
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Subject: Re: Hardware recommendations to scale to silly load

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