From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Relative performance of RAID-5 algorithms
Date: 10 Dec 2003 20:21:16 -0800
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Hi all,

There are four different "checksumming algorithms" -- really, disk
layouts, in Linux.  Is there anything "known" about the relative
performance of these?  The default for mdadm and mkraid is currently
left-symmetric; is that a sensible default?

I'm asking because I'm trying to get my RAID-6 project going, and
these layouts get a lot more complex with two redundancy drives.
Thus, I'm considering just supporting one disk layout at this point,
and I'd like to pick one :)

	-hpa
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