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Re: High CPU usage / load average after upgrading to Ubuntu 12.04

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: High CPU usage / load average after upgrading to Ubuntu 12.04
Date: 2013-02-13 19:24:41
Message-ID: 511BE879.8080706@agliodbs.com (view raw or flat)
Thread:
Lists: pgsql-performance
On 02/12/2013 05:28 PM, Dan Kogan wrote:
> Hi Will,
> 
> Yes, I think we've seen some discussions on that.  Our servers our hosted on Amazon Ec2 and upgrading the kernel does not seem so straight forward.
> We did a benchmark using pgbench on 3.5 vs 3.2 and saw an improvement.  Unfortunately our production server would not boot off 3.5 so we had to revert back to 3.2.
> 
> At this point we are contemplating whether it's better to go back to 11.04 or upgrade to 12.10 (which comes with kernel version 3.5).
> Any thoughts on that would be appreciated.

I have a machine running the same version of Ubuntu.  I'll run some
tests and tell you what I find.


-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com


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