Re: Adding more memory = hugh cpu load

From: Ivan Voras <ivoras(at)freebsd(dot)org>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Adding more memory = hugh cpu load
Date: 2011-10-11 10:20:45
Message-ID: j7159t$jhf$1@dough.gmane.org
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On 11/10/2011 00:02, Samuel Gendler wrote:

> The original question doesn't actually say that performance has gone down,
> only that cpu utilization has gone up. Presumably, with lots more RAM, it is
> blocking on I/O a lot less, so it isn't necessarily surprising that CPU
> utilization has gone up.

It's Linux - it counts IO wait in the load average. Again there are too
little details to be sure of anything, but it is possible that the IO
rate didn't go down.

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