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From: Bruce Momjian <bruce@momjian.us>
To: Shaun Thomas <sthomas@optionshouse.com>
Cc: Ben Chobot <bench@silentmedia.com>
Cc: pgsql-performance <pgsql-performance@postgresql.org>
Subject: Re: shared_buffers on ubuntu precise
Date: Fri, 30 Nov 2012 15:38:38 -0500
Message-ID: <20121130203838.GA27151@momjian.us> (raw)
In-Reply-To: <50B910A9.7000406@optionshouse.com>
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On Fri, Nov 30, 2012 at 02:01:45PM -0600, Shaun Thomas wrote:
> On 11/30/2012 01:57 PM, Ben Chobot wrote:
> 
> >Hm, this sounds like something we should look into. Before we start
> >digging do you have more to share, or did you leave it with the "huh,
> >that's weird; this seems to fix it" solution?
> 
> We're still testing. We're still on the -31 kernel. We tried the -33
> kernel which *might* fix it, but then this happened:
> 
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1084264
> 
> So now we're testing -34 which is currently proposed. Either way,
> it's pretty clear that Ubuntu's choice of patches to backport is
> rather eclectic and a little wonky, or that nailing down load
> calculations went awry since the NOHZ stuff started, or both. At
> this point, I wish we'd stayed on CentOS.

Or Debian.  Not sure what would justify use of Ubuntu as a server,
except wanting to have the exact same OS as their personal computers.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +


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