From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
To: Mark Nelson <mark.nelson@inktank.com>
Cc: "Sébastien Han" <han.sebastien@gmail.com>,
ceph-devel <ceph-devel@vger.kernel.org>
Subject: Re: Ceph benchmarks
Date: Tue, 28 Aug 2012 16:27:18 +1200 [thread overview]
Message-ID: <503C48A6.5060205@catalyst.net.nz> (raw)
In-Reply-To: <503C2A86.8080503@inktank.com>
+1 to that. I've been seeing 4-6 MB/s for 4K writes for 1 OSD with 1 SSD
for journal and another for data [1]. Interestingly I did see some nice
scaling with 4K random reads: 2-4 MB/s per thread for up to 8 threads
(looked like it plateaued thereafter).
Cheers
Mark
[1] FYI not on the box I posted about before - on a more modern pc with
6Bbit/s SATA.
On 28/08/12 14:18, Mark Nelson wrote:
> 5) rados bench tests with smaller requests could be interesting on 15k
> drives. I typically see about 1-2MB/s per OSD for 4k requests with
> 7200rpm SATA disks.
next prev parent reply other threads:[~2012-08-28 4:27 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-27 20:47 Ceph benchmarks Sébastien Han
2012-08-27 20:59 ` Andrey Korolyov
2012-08-28 1:40 ` Alexandre DERUMIER
2012-08-28 2:18 ` Mark Nelson
2012-08-28 4:27 ` Mark Kirkwood [this message]
2012-08-28 8:32 ` Sébastien Han
2012-08-28 11:46 ` Mark Nelson
2012-08-28 11:51 ` Plaetinck, Dieter
2012-08-28 13:11 ` Tommi Virtanen
2012-08-28 22:16 ` Sébastien Han
2012-09-08 18:16 ` Ceph benchmarks / ceph osd tell X bench Dieter Kasper
2012-09-10 17:07 ` Sébastien Han
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