From: Emmanuel Florac <eflorac@intellique.com>
To: Cory Coager <ccoager@davisvision.com>
Cc: xfs@oss.sgi.com
Subject: Re: extremely slow write performance plaintext
Date: Thu, 13 Jan 2011 23:35:27 +0100 [thread overview]
Message-ID: <20110113233527.6dca104d@galadriel.home> (raw)
In-Reply-To: <3205_1294953756_4D2F6D1C_3205_1943_1_4D2F6D1C.2060409@davisvision.com>
Le Thu, 13 Jan 2011 16:22:36 -0500 vous écriviez:
> I am getting over
> 180MB/s read speeds and 40MB/s write speeds on all the LV's except
> one.
This is pretty bad. My last 14 SAS drives RAID-6 array achieved 500
MB/s write, 1GB/s read sustained. What is the SAS controller? the RAID
controller? Please provide more details about the
enclosure/drives/cabling too.
What is the kernel/distro? Did you striped your LVs across multiple
physical volumes except the last one? What's the output for pvdisplay,
vgdisplay, lvdisplay?
--
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Emmanuel Florac | Direction technique
| Intellique
| <eflorac@intellique.com>
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next prev parent reply other threads:[~2011-01-13 22:33 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-13 21:22 extremely slow write performance plaintext Cory Coager
2011-01-13 22:35 ` Emmanuel Florac [this message]
2011-01-14 0:17 ` Cory Coager
2011-01-14 19:51 ` Stan Hoeppner
2011-01-14 20:48 ` Cory Coager
2011-01-14 22:02 ` Stan Hoeppner
2011-01-18 14:16 ` Cory Coager
2011-01-19 9:59 ` Stan Hoeppner
2011-01-25 14:22 ` Cory Coager
2011-01-25 6:21 ` Michael Monnerie
2011-01-25 9:48 ` Mathieu AVILA
2011-01-25 14:25 ` Cory Coager
2011-01-28 6:22 ` Michael Monnerie
2011-01-28 13:08 ` Cory Coager
2011-01-25 14:27 ` Cory Coager
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