I have a 2100a 4/300 system which I use for a mail application. The
queue disk area for this system gets hit very hard. I have a
Quantum SSD available from a previous incarnation of the system
which I would like to use to handle the i/o transaction rate, but
I'm having problems.
The SSD is rated at about 1,000 ops/second by the manufacturer. The
model I have is fast/narrow SCSI connected to a KZPAA, so I don't
expect to hit quite that peak performance. I can't seem to get more
than about 120 ops/sec, about 1.5MB/sec (as reported by "monitor")
from the thing using either UFS or ADVFS under my normal workload.
Any hints or tuning advice for getting more out of the drive would
be appreciated.
Semi-related question: Is there a way to tell ADVFS to move a file
or directory metadata to a specific ADVFS volume? The "migrate"
utility will move file extents, but not metadata. If I'm able to
get more performance out of the SSD I'd like to have it handle all
the metadata and log area for the file domain.
Thanks for your help,
--
Jeff Hayward j.hayward_at_ots.utexas.edu
+1 512 471 2432 (v)
Received on Mon Nov 10 1997 - 19:08:44 NZDT