Stress testing your machine -- what program?

[Lennart Sorensen]

On Tue, Apr 19, 2011 at 06:25:27AM -0400, Anthony de Boer wrote:
> Just a thing to check, but make sure that RAID array isn't running in
> degraded mode.  If one of the disks failed, or it thinks the array is
> out of sync with itself, then everything you would have read from the
> failed disk has to be reconstructed from the other three, and
> performance goes to lunch.  It's been awhile since I used software RAID
> on Linux, but /proc/mdstat should be the file that shows you the status.

And make sure you told the filesystem block allocator about the raid
layout so that it doesn't cause unnecesary read/modify/write cycles on
the raid5.

-- 
Len Sorensen
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