From: pg@lxra2.for.sabi.co.UK (Peter Grandi)
To: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: Intel SSD or other brands
Date: Thu, 29 Dec 2016 11:39:47 +0000 [thread overview]
Message-ID: <22628.62979.46926.463323@tree.ty.sabi.co.uk> (raw)
In-Reply-To: <0329d841-984b-fa25-0bf2-0aba4d55b6de@websitemanagers.com.au>
> [ ... ] I now found out that performance of a 520s SSD is
> around 180 times faster than a 530s SSD. [ ... ]
Well "performance" can be roughly the same, even if "speed" can
be very different.
http://www.sabi.co.uk/blog/15-two.html#151023
> 520s: 70MB/s
> 530s: 0.4MB/s
....
> fio --filename=/dev/sdb --direct=1 --sync=1 --rw=write --bs=4k
> --iodepth=1 --runtime=60 --time_based --group_reporting
> --name=IntelDC3510_4kj1 --numjobs=1
Arguably the 520s actually have no performance.
https://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/
next prev parent reply other threads:[~2016-12-29 11:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-29 2:14 Intel SSD or other brands Adam Goryachev
2016-12-29 11:39 ` Peter Grandi [this message]
2016-12-29 14:35 ` Adam Goryachev
2016-12-29 17:46 ` Peter Grandi
2016-12-29 16:56 ` Robert LeBlanc
2016-12-29 17:33 ` Peter Grandi
2016-12-29 18:37 ` Peter Grandi
2016-12-29 23:04 ` Adam Goryachev
2016-12-29 23:20 ` Robert LeBlanc
2016-12-29 18:50 ` Doug Dumitru
2016-12-29 22:51 ` Adam Goryachev
2016-12-30 1:24 ` Doug Dumitru
2016-12-30 16:32 ` Pasi Kärkkäinen
2016-12-30 18:23 ` Doug Dumitru
-- strict thread matches above, loose matches on Subject: below --
2016-12-29 1:52 Adam Goryachev
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