Re: 8.3 synchronous_commit

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: Greg Smith <gsmith(at)gregsmith(dot)com>
Cc: Hannes Dorbath <light(at)theendofthetunnel(dot)de>, pgsql-performance(at)postgresql(dot)org
Subject: Re: 8.3 synchronous_commit
Date: 2008-01-21 23:45:54
Message-ID: 1200959154.10057.533.camel@dogma.ljc.laika.com
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On Mon, 2008-01-21 at 18:31 -0500, Greg Smith wrote:
> pgbench doesn't handle 100 clients at once very well on the same box as
> the server, unless you have a pretty serious system. The pgbench program
> itself has a single process model that doesn't handle the CFQ round-robin
> very well at all. On top of that, the database scale should be bigger

He was referring to the CFQ I/O scheduler. I don't think that will
affect pgbench itself, because it doesn't read/write to disk, right?

Regards,
Jeff Davis

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