Messages in this thread | | | Date | Wed, 28 May 2008 13:33:46 -0400 (EDT) | From | Justin Piszcz <> | Subject | Re: Performance Characteristics of All Linux RAIDs (mdadm/bonnie++) |
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On Wed, 28 May 2008, Jens Bäckman wrote:
> On Wed, May 28, 2008 at 10:53 AM, Justin Piszcz <jpiszcz@lucidpixels.com> wrote: >> Results: >> >> http://home.comcast.net/~jpiszcz/raid/20080528/raid-levels.html >> http://home.comcast.net/~jpiszcz/raid/20080528/raid-levels.txt > > 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. >
The RAID1 is correct. As has been discussed on this list before, you will only see raid speed > 1 disk if you run 2(?, or 3 minimal) threads from the same device (raid1).
Justin.
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