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Date: Wed, 27 Feb 2013 20:52:44 +1000
From: Andre <pg@darix.de>
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To: pgsql-performance@postgresql.org
Subject: Re: Server stalls, all CPU 100% system time
References: <512A1EC3.4020806@darix.de> <512D4548.2000502@agliodbs.com>
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On 27/02/2013 9:29 AM, Josh Berkus wrote:
> Andre,
>
> Please see the related thread on this list, "High CPU usage / load
> average after upgrading to Ubuntu 12.04".  You may be experiencing some
> of the same issues.  General perspective seems to be that kernels 3.0
> through 3.4 have serious performance issues.
>
>
Josh,

I saw that thread, but it did not appear to be the same symptoms that I had. Where they have a high load average, I only saw spikes during which the server was unresponsive. During that time the load would jump to 50-70 (on 24 cores).
Anyway, after upgrading the Kernel to 3.4.28 and the latest Intel network card driver the problem seems to be gone.


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