ca.portal.admin

Re:Re: concurrent users

Discussion created by ca.portal.admin on Apr 14, 2008
Hi Wayne:

You're likely to get answers all over the board on this one, but perhaps
that is exactly what you want.

Other than some obvious restraints, like virtual memory, network
bandwidth,
CPU cycles, etc., I have never heard of an IDMS system that could not
support the maximum concurrent number of users (albeit I had a lot of
fun
during the Cullinet years doing performance and tuning consulting to
achieve
exactly that result ;-}} ).

That said, I suspect you may be asking about life in the 'new world',
with
web services, etc.

I have personally simulated 10K users hitting an ASP page that
connected/retrieved minimum data from an IDMS database. I don't have
all
of the details anymore, but the overall response was about 1.17 seconds
running the simulation for about 15 minutes. This was done on CA iron
in
2003/2004 on a R14.1 CV.

Of course, it was just a simulation, but it illustrates that you can
push a
rather large load through a CV if you have enough back-end resources.
Again, just my 2cents...your results WILL vary...

Please feel free to contact me offline (taschoenborn@msn.com).

Tom Schoenborn
TA Schoenborn & Associates LLC

----- Original Message -----
From: ""Doneker, John W (US SSA)"" <John.Doneker@BAESYSTEMS.COM>
To: <IDMS-L@LISTSERV.IUASSN.COM>
Sent: Monday, April 14, 2008 2:48 PM
Subject: concurrent users


Does anyone have an idea of the concurrent number of users IDMS can
handle?





J. Wayne Doneker

BAE Systems

York Pa.,

717 225 8109

John.Doneker@baesystems.com
"
IDMS Public Discussion Forum
IDMS-L@LISTSERV.IUASSN.COM
SMTP
IDMS-L@LISTSERV.IUASSN.COM
IDMS-L@LISTSERV.IUASSN.COM
SMTP








Normal

Normal
Re: concurrent users
"The number of sysgens I think depends on what connection your
application program has to IDMS. If it's a CICS program making IDMS dml
calls through the svc, which represents a large percentage of IDMS
configurations, then I believe the PTERMS/LTERMS are dynamically built,
not predefined, these are LD..... lterms, just like batch/cv jobs.
The Pterm/lterm limit applies to vtam lines, where typically the IDMS
applications run in the IDMS cv, or to the predefined UCF line.

Lutz Petzold
TDM UDB/IDMS Support
Monday, Tuesday, Friday 401 782 2265
Wednesday, Thursday 860 636 0291
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