linux-kernel - Re: Performance Characteristics of All Linux RAIDs (mdadm/bonnie++)

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Message-ID: <alpine.DEB.1.10.0805290805500.17643@p34.internal.lan>
Date:	Thu, 29 May 2008 08:06:24 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Holger Kiehl <Holger.Kiehl@....de>
cc:	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
	xfs@....sgi.com
Subject: Re: Performance Characteristics of All Linux RAIDs
 (mdadm/bonnie++)



On Thu, 29 May 2008, Holger Kiehl wrote:

> On Wed, 28 May 2008, Justin Piszcz wrote:
>
>> Hardware:
>> 
>> Results:
>> 
>> http://home.comcast.net/~jpiszcz/raid/20080528/raid-levels.html
>> http://home.comcast.net/~jpiszcz/raid/20080528/raid-levels.txt
>> 
> Why is the Sequential Output (Block) for raid6 165719 and for raid5 only
> 86797? I would have thought that raid6 was always a bit slower in writting
> due to having to write double amount of parity data.
>
> Holger
>

I will re-run the RAID5 test and also run the test on a single disk and 
update the results later.

Justin.
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