Re: performance problems ... 100 cpu utilization - Mailing list pgsql-performance

From Dennis
Subject Re: performance problems ... 100 cpu utilization
Date
Msg-id 42D60C2E.3020004@works4me.com
Whole thread Raw
In response to Re: performance problems ... 100 cpu utilization  (David Mitchell <david.mitchell@telogis.com>)
Responses Re: performance problems ... 100 cpu utilization  (David Mitchell <david.mitchell@telogis.com>)
List pgsql-performance
David Mitchell wrote:

> What is the load average on this machine? Do you do many updates? If
> you do a lot of updates, perhaps you haven't vacuumed recently. We
> were seeing similar symptoms when we started load testing our stuff
> and it turned out we were vacuuming too infrequently.

The load average at the 100% utilization point was about 30! A vacuum
analyze was done before the test was started. I believe there are many
more selects than updates happening at any one time.

Dennis

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