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Re: Strange behavior: pgbench and new Linux kernels
- From: Greg Smith <gsmith(at)gregsmith(dot)com>
- To: Matthew <matthew(at)flymine(dot)org>
- Cc: pgsql-performance(at)postgresql(dot)org
- Subject: Re: Strange behavior: pgbench and new Linux kernels
- Date: Fri, 18 Apr 2008 13:19:09 -0400 (EDT)
- Message-id: <Pine(dot)GSO(dot)4(dot)64(dot)0804181317480(dot)6528(at)westnet(dot)com>
On Fri, 18 Apr 2008, Matthew wrote:
You may also be seeing processes forced to switch between CPUs, which breaks the caches even more. So what happens if you run pgbench on a separate machine to the server? Does the problem still exist in that case?
I haven't run that test yet but will before I submit a report. I did however try running things with the pgbench executable itself bound to a single CPU with no improvement.
-- * Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD
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- From: Greg Smith
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- From: Matthew
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