ADSM-L

Performance ADSM, server OS/390 and AIX clients

1999-02-12 07:11:15
Subject: Performance ADSM, server OS/390 and AIX clients
From: Olga Lopez Gonzalez <83821225 AT ES.IBM DOT COM>
Date: Fri, 12 Feb 1999 12:11:15 +0000
   My customer has ADSM/OS390 server and two AIX clients with TCP/IP. The two
AIX clients are equal (equal hardware and software, the same configuration and
the same communication between them and the ADSM server). We are doing backups
with ADSM and we have very different results. We obtain the following results:


  AIX ONE

 - Nº objects inspected :    11306
 - Nº objects backuped:     11302
 - Total bytes transmitted:  276.13 MB
 - Transfer speed network : 1582.25 KB/sec
 - Transfer speed : 976.71 KB/sec
 - Elapsed time : 00:04:49


  AIX TWO

 - Nº objects inspected : 19080
 - Nº objects backuped : 19080
 - Total bytes transmitted : 613.83 MB
 - Transfer speed network 1554.06 MB
  - Transfer speed: 170.97 KB/sec
 -  Elapsed time: 01:01:16

  We are using in the two machines the following parameters:

    a) DSMSERV.OPT

  TXNGROUMAX 256

  b) DSM.OPT

  TXNBYTELIMIT 25600
  TCPNODELAY YES
  TCPBUFFSIZE 512

  I don't know what it's the reason because one AIX is so fast and the other
AIX is so slow. Do you have any idea about this?
Thanks in advance.



Saludos,
Olga López,
Gestión de Sistemas.
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