Hi Shafiee,

What is the average file size of the NT boxes compared to the AIX boxes.
At our site there is a big difference between the two (NT being much
smaller and the AIX), and we see the same sorts of differences as you.
We have put it down to file system overhead ie it takes a longer time to
create 100 1MB files than is does to create 1 100MB file.


Trevor
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Trevor Foley
Trevor Foley
Bankers Trust Australia Limited
Phone: 61-2-9259 3944    Fax: 61-2-9259 2659


        -----Original Message-----
        From:   Shafiee A. Jalil
[SMTP:Md-Norshafiee.B.Abd-Jalil AT OPENMAIL.FIC323.BSPSER.SIMIS DOT COM]
        Sent:   Tuesday, June 30, 1998 5:33 PM
        To:     ADSM-L AT VM.MARIST DOT EDU
        Subject:        ADSM v3 Restore Performance.

        All,

        Server:
        ADSM v3
        AIX 4.2.1
        IBM R40

        Clients:
        NT
        AIX
        (both compression off)

        We aren't getting the restore performance on our NT boxes. The
        performace on our AIX machines are okay though. The IBM client
is an
        SP2 whereas the NT client is an HP Netserver with a Pentium Pro
processor.

        We are on a 100BaseT network and these are our restore timings
for the
        NT and AIX clients.

        The Network Transfer Rate:
        AIX:8MB/s
        NT:6-7MB/s

        The Aggregate Data Transfer Rate:
        AIX: 1.2 MB/s
        NT: 02.-03. MB/s

        Why is there such a big difference between the NT and AIX boxes
for our
        Aggregate Data Transfer rate even though there is no big
difference
        between the Network Transfer Rate for the two machines? We also
notice
        that during restores, the CPU utilisation on the NT boxes are
about
        80-90% whereas on the SP there is hardly a blip.  (Both of these
        clients have compression turned off).

        So could the system I/O and CPU play an important point in
restore
        speed? Or is there some configuration settings that we need to
set?

        Regards,
        Shafiee.