From: Brian Candler <B.Candler@pobox.com>
To: Stan Hoeppner <stan@hardwarefreak.com>
Cc: Christoph Hellwig <hch@infradead.org>, xfs@oss.sgi.com
Subject: Re: Performance problem - reads slower than writes
Date: Sat, 4 Feb 2012 11:24:36 +0000 [thread overview]
Message-ID: <20120204112436.GA3167@nsrc.org> (raw)
In-Reply-To: <4F2D016C.9020406@hardwarefreak.com>
On Sat, Feb 04, 2012 at 03:59:08AM -0600, Stan Hoeppner wrote:
> Will you be using mdraid or hardware RAID across those 24 spindles?
Gluster is the front-runner at the moment. Each file sits on a single
spindle, and there is a separate filesystem per spindle, so I think the
parallel processing will work much better this way. This does mean double
the disks to get data replication though.
I did some testing of RAID6 mdraid (12 disks with with 1MB stripe size) and
it sucked. However I need to re-test it now that I know about inode64.
We do have a requirement for archival storage and that might use RAID6.
Regards,
Brian.
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next prev parent reply other threads:[~2012-02-04 11:24 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-30 22:00 Performance problem - reads slower than writes Brian Candler
2012-01-31 2:05 ` Dave Chinner
2012-01-31 10:31 ` Brian Candler
2012-01-31 14:16 ` Brian Candler
2012-01-31 20:25 ` Dave Chinner
2012-02-01 7:29 ` Stan Hoeppner
2012-02-03 18:47 ` Brian Candler
2012-02-03 19:03 ` Christoph Hellwig
2012-02-03 21:01 ` Brian Candler
2012-02-03 21:17 ` Brian Candler
2012-02-05 22:50 ` Dave Chinner
2012-02-05 22:43 ` Dave Chinner
2012-01-31 14:52 ` Christoph Hellwig
2012-01-31 21:52 ` Brian Candler
2012-02-01 0:50 ` Raghavendra D Prabhu
2012-02-01 3:59 ` Dave Chinner
2012-02-03 11:54 ` Brian Candler
2012-02-03 19:42 ` Stan Hoeppner
2012-02-03 22:10 ` Brian Candler
2012-02-04 9:59 ` Stan Hoeppner
2012-02-04 11:24 ` Brian Candler [this message]
2012-02-04 12:49 ` Stan Hoeppner
2012-02-04 20:04 ` Brian Candler
2012-02-04 20:44 ` Joe Landman
2012-02-06 10:40 ` Brian Candler
2012-02-07 17:30 ` Brian Candler
2012-02-05 5:16 ` Stan Hoeppner
2012-02-05 9:05 ` Brian Candler
2012-01-31 20:06 ` Dave Chinner
2012-01-31 21:35 ` Brian Candler
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