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. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance