On Wed, 14 Oct 1998 [EMAIL PROTECTED] wrote:
> On Tue, Oct 13, 1998 at 10:01:43PM +0300, Gadi Oxman wrote:
> ...
> > Ouch.. 100KB/sec on block writes is indeed unusable; strange, as we
> > usually score very well on bonnie's block-writes.
> >
> > Does it happen consistently on each run? Does one of the drives in the
> > RAID array also contains an active swap partition? Does it also happen
> > with a RAID set of 3, 4 or 5 rather than 6 disks on your system?
>
> It's consistent. None of the drives are currently used for any other
> purpose.
>
> Attempting a mkraid on a three drive array also brings the machine to it's
> knees. RAID-0 on any drive combination performs excellent.
That might be something else -- raw access to the block device using the
/dev/... interface is slower than access through the filesystem under
Linux, mkraid in raidtools-0.41 was particulary slow, and the RAID driver
is not involved at all during mkraid (mkraid is just accessing the
corresponding /dev/sdx devices).
How is bonnie's performance on a three drives setup?
Gadi
