G'day Carl,

My understanding is that shared memory will give you an increase in throughput
over TCP/IP.  However, there are hundreds of factors that affect throughput,
especially with TCP/IP.

Have you adjusted your TXNBYTELIMIT and TXNGROUPMAX values and tested the
results?

Regards,
--
  Mr Jason E Meaden                                  IBM Australia Ltd
  Mr Jason E Meaden                                  IBM Australia Ltd
  Software Service Specialist (Asia Pacific)         55 Coonara Avenue
  ADSM & VisualAge Support - Cell Leader      West Pennant Hills  2125
  Phone: 13 24 26 * Fax: 61 2 9354 7797 * Tie: 49427 * VM: RTP(MEADEN)





ADSM-L AT VM.MARIST DOT EDU on 04/30/98 11:56:26 AM
Please respond to ADSM-L AT VM.MARIST DOT EDU
To: ADSM-L AT VM.MARIST DOT EDU
cc:
Subject: SHMEM or TCP/IP?


We're running ADSM v3.1.1.1 on AIX 4.2.1 on a 2 cpu F50.  We're trying
to backup 9 million 40kb tiff images.

Currently it is setup to use Shared Memory for the client<->server
communications.

Does anyone have any experience in the relative performance of using
shared memory over tcp/ip for backups and restores.

Restore performance for us is a bit of a problem as we currently
calculate it will take around 15 days to restore the images in case of
a complete failure.

Carl.