ADSM-L

Re: Tuning tips?

1997-12-10 09:48:00
Subject: Re: Tuning tips?
From: Bill Colwell <bcolwell AT DRAPER DOT COM>
Date: Wed, 10 Dec 1997 09:48:00 -0500
Raise the TXNBytelimit to 25600 and set the server option MAXtxngroup to
256.  This will make large server file aggregates and reduce the munber of
server database commits.

Bill Colwell
The Charles Stark Draper Laboratory
Cambridge Ma.
_________________________Reply Header_________________________
Author: ADSM-L AT vm.marist DOT edu
Subject: Tuning tips?
12-10-1997 07:47 AM

We've just installed ADSM/MVS 3.1 on our TCP/IP 3.2 Ethernet network
over ATM (LANE) backbone.  We have the lastest ADSM 3.x client code on
our HP-UX 10.2 & IBM AIX 4.3 servers.
In the dsmsched.log I am seeing:
Network data transfer rate:        1,772.97 KB/sec
Aggregate data transfer rate:      1,468.25 KB/sec
We do not have ADSM compression turned on as we are using hardware
compression on our 3494/3590 MagStar tape drives.
Our TCPIP/MVS 3.2, the  LARGEDATABUFFERPOOLSIZE is set to 32768.
In the HP / AIX Clients' the dsm.sys parameters are:
   TCPWindowsize      64
   TCPBuffsize             32
   TXNBytelimit       2048
Any help in identifying critical tuning points will be appreciated!
Thanks,
Perry McGrew
Agway Inc.
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