> is there something foul with RAIDframe, concerning system CPU time?
> I have a directory with ~1000 entries on a RAID5, and a ls -l takes
> 30 seconds wall clock, of which 17 (!) seconds are system time, on
> an otherwise only lightly loaded machine.  On a single disk of the
> same type, the same thing completes in a tenth of a second.

isn't it rebuilding now?