Date:         Wed, 13 Apr 2005 11:26:41 -0400
Reply-To:     CICS List <CICS-L@LISTSERV.UGA.EDU>
Sender:       CICS List <CICS-L@LISTSERV.UGA.EDU>
From:         "Martin, Mike" <Mike.Martin@NCSECU.ORG>
Subject:      Re: Redispatch Wait Times
Content-Type: text/plain; charset="us-ascii"

Jorg,

How many engines does your system have?  Is it possible that the region
having increased response time is starting to tax the capacity of a
single engine?

Mike Martin

-----Original Message-----
From: CICS List [mailto:CICS-L@LISTSERV.UGA.EDU] On Behalf Of Jorg Lueke
Sent: Wednesday, April 13, 2005 11:07 AM
To: CICS-L@LISTSERV.UGA.EDU
Subject: Redispatch Wait Times


We have an environement where 3 CICS regions run on 1 Lpar.  Basically
they pass the transactions off from one to the next and then back out to
the user.

In one of the regions, as volumes increase the CICS response time
increased.  DB2 response times went down and WLM shows no CPU
dispatching issues and there are no storage/enqueue issues.

We tracked this down to an increase in CICS Redispatch wait time for a
particular transactions.  Most of ours gave a redisptahc wait of 0 to
.05 as does this transaction.  However as the volume picks up this
transaction sees the redispatch waits rise to over .2 seconds.

First, does redispatch wait mean the amount of time waiting to restart
running under CICS after coming back (from DB2 in this case)?

Secondly, what can be causes of this wait time in a environment with no
CPU/Storage shortages?


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