Re: RAID-1 performance under 2.4 and 2.6

From: Emmanuel Florac
Date: Wed Mar 26 2008 - 07:07:25 EST


Le Wed, 26 Mar 2008 09:42:19 +0100
"Bart Van Assche" <bart.vanassche@xxxxxxxxx> 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.

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Emmanuel Florac | Intellique
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