From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: 60 core performance with 9.3
Date: Fri, 27 Jun 2014 11:49:36 +1200
Message-ID: <53ACB190.2030206@catalyst.net.nz> (raw)
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I have a nice toy to play with: Dell R920 with 60 cores and 1TB ram [1].
The context is the current machine in use by the customer is a 32 core
one, and due to growth we are looking at something larger (hence 60 cores).
Some initial tests show similar pgbench read only performance to what
Robert found here
http://rhaas.blogspot.co.nz/2012/04/did-i-say-32-cores-how-about-64.html
(actually a bit quicker around 400000 tps).
However doing a mixed read-write workload is getting results the same or
only marginally quicker than the 32 core machine - particularly at
higher number of clients (e.g 200 - 500). I have yet to break out the
perf toolset, but I'm wondering if any folk has compared 32 and 60 (or
64) core read write pgbench performance?
regards
Mark
[1] Details:
4x E7-4890 15 cores each.
1 TB ram
16x Toshiba PX02SS SATA SSD
4x Samsung NVMe XS1715 PCIe SSD
Ubuntu 14.04 (Linux 3.13)
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To: pgsql-performance@postgresql.org
Cc: mark.kirkwood@catalyst.net.nz
Subject: Re: 60 core performance with 9.3
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