From: Mark Nelson <mnelson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: ceph-devel <ceph-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"ceph-users-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org"
<ceph-users-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org>
Subject: Ceph Hammer OSD Shard Tuning Test Results
Date: Wed, 25 Feb 2015 22:44:15 -0600 [thread overview]
Message-ID: <54EEA49F.40606@redhat.com> (raw)
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Hi Everyone,
In the Ceph Dumpling/Firefly/Hammer SSD/Memstore performance comparison
thread, Alexandre DERUMIER wondered if changing the default shard and
threads per shard OSD settings might have a positive effect on
performance in our tests. I went back and used one of the PCIe SSDs
from our previous tests to experiment with a recent master pull. I
wanted to know how performance was affected by changing these parameters
and also to validate that the default settings still appear to be correct.
I plan to conduct more tests (potentially across multiple SATA SSDs in
the same box), but these initial results seem to show that the default
settings that were chosen are quite reasonable.
Mark
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next reply other threads:[~2015-02-26 4:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-26 4:44 Mark Nelson [this message]
[not found] ` <934614223.2346576.1425017430135.JavaMail.zimbra-M8QNeUgB6UTyG1zEObXtfA@public.gmane.org>
2015-02-27 6:10 ` Ceph Hammer OSD Shard Tuning Test Results Alexandre DERUMIER
[not found] ` <1334533598.2513656.1425220674977.JavaMail.zimbra-M8QNeUgB6UTyG1zEObXtfA@public.gmane.org>
2015-03-01 14:38 ` Alexandre DERUMIER
[not found] ` <770882624.2513660.1425220699487.JavaMail.zimbra-M8QNeUgB6UTyG1zEObXtfA@public.gmane.org>
2015-03-01 21:49 ` Kevin Walker
[not found] ` <268261243.2571232.1425278514343.JavaMail.zimbra-M8QNeUgB6UTyG1zEObXtfA@public.gmane.org>
2015-03-02 6:42 ` Alexandre DERUMIER
2015-03-02 14:39 ` Mark Nelson
[not found] ` <1210381094.2666418.1425311646322.JavaMail.zimbra@oxygem.tv>
2015-03-02 15:54 ` [ceph-users] " Alexandre DERUMIER
2015-03-02 19:56 ` Vu Pham
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