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

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From: Jens Bäckman <jens.backman@...>
To: Justin Piszcz <jpiszcz@...>
Cc: <linux-kernel@...>, <linux-raid@...>, <xfs@...>
Subject: Re: Performance Characteristics of All Linux RAIDs (mdadm/bonnie++)
Date: Wednesday, May 28, 2008 - 12:34 pm

On Wed, May 28, 2008 at 10:53 AM, Justin Piszcz <jpiszcz@lucidpixels.com> wrote:

Either the RAID 1 read speed must be wrong, or something is odd in the
Linux implementation. There's six drives that can be used for reading
at the same time, as they contain the very same data. 63MB/s
sequential looks like what you would get from a single drive.
--
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Messages in current thread:
Performance Characteristics of All Linux RAIDs (mdadm/bonnie..., Justin Piszcz, (Wed May 28, 4:53 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Holger Kiehl, (Thu May 29, 2:44 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Thu May 29, 1:02 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Bill Davidsen, (Fri May 30, 8:55 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Keld , (Fri May 30, 10:23 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Thu May 29, 8:06 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Bill Davidsen, (Wed May 28, 7:09 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Michal Soltys, (Thu May 29, 2:37 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Keld , (Wed May 28, 3:02 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Wed May 28, 3:05 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Jens Bäckman, (Wed May 28, 12:34 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Alan Cox, (Wed May 28, 2:57 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Bill Davidsen, (Wed May 28, 7:00 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Alan Cox, (Thu May 29, 7:22 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Bill Davidsen, (Fri May 30, 8:22 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Wed May 28, 1:33 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Bryan Mesich, (Wed May 28, 12:46 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Chris Snook, (Wed May 28, 12:40 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Chris Snook, (Wed May 28, 11:40 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Wed May 28, 1:32 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Chris Snook, (Wed May 28, 3:22 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Wed May 28, 3:27 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Kasper Sandberg, (Thu May 29, 5:57 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Thu May 29, 5:08 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Wed May 28, 1:53 pm)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Peter Rabbitson, (Wed May 28, 6:54 am)
Re: Performance Characteristics of All Linux RAIDs (mdadm/bo..., Justin Piszcz, (Wed May 28, 7:05 am)