Messages in this thread | | | Date | Wed, 26 Mar 2008 12:15:57 +0100 | From | "Bart Van Assche" <> | Subject | Re: RAID-1 performance under 2.4 and 2.6 |
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On Wed, Mar 26, 2008 at 12:07 PM, Emmanuel Florac <eflorac@intellique.com> wrote: > Le Wed, 26 Mar 2008 09:42:19 +0100 > "Bart Van Assche" <bart.vanassche@gmail.com> écrivait: > > > Keep in mind that the above test tests two subsystems at the same > > time: RAID-1 + the filesystem on top of it. > > I'm using XFS usually, and I've also checked against the raw devices > and it looks the same (2.4 still faster). I must add that the difference > is somewhat reduced when using a single disk drive vs. RAID-1, > obviously due to different buffering policy in the RAID subsystem.
You are welcome to post the numbers you obtained with dd for direct I/O on a RAID-1 setup for 2.4 versus 2.6 kernel.
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