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,=20
network bandwidth, CPU cycles, etc., I have never heard of
an=20 IDMS system that could not support the maximum
concurrent=20 number of users (albeit I had a lot of fun during
the Cullinet=20 years doing performance and tuning consulting
to achieve=20 exactly that result ;-}} ).

That said, I suspect you may be asking about life in the
'new=20 world', with web services, etc.

I have personally simulated 10K users hitting an ASP page
that=20 connected/retrieved minimum data from an IDMS
database. I=20 don't have all of the details anymore, but the
overall response=20 was about 1.17 seconds running the
simulation for about 15=20 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=20
you can push a rather large load through a CV if you have=20
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=20 can handle?





J. Wayne Doneker

BAE Systems

York Pa.,

717 225 8109

John.Doneker@baesystems.com
This e-mail may contain confidential or privileged information.
If you think you have received this e-mail in error, please
advise the sender by reply e-mail and then delete this e-mail
immediately.
Thank you. Aetna

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please visit
http://www.messagelabs.com/email
______________________________________________________________________
"
IDMS Public Discussion Forum
IDMS-L@LISTSERV.IUASSN.COM
SMTP
IDMS-L@LISTSERV.IUASSN.COM
IDMS-L@LISTSERV.IUASSN.COM
SMTP








Normal

Normal
IDMS 14.1 running on Z/OS 1.9
"Hi Everyone:

Does anybody is running idms 14.1 on Z/OS 1.9. Any problems or comments ???

TIA.

J. Sotela
_________________________________________________________________
News, entertainment and everything you care about at Live.com. Get it now!
http://www.live.com/getstarted.aspx
"
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
"OK, so this string finally got me curious.

The R16 DSECT manual shows the LTT (Logical Terminal Table) header having a
halfword field as the first entry:

LTTN DS H NUMBER OF LOGICAL TERMINAL ENTRIES

Note: This table holds ALL logical terminals in the system. Unless it's
allowed to go negative (which I doubt), that implies there IS a limit of
32,767 LTTs in a system.

QED.

Don Casey
Run Right, LLC

P.S. There is an old IT saying: if the question is about hardware, the
answer is ""16"", if the question is about software, the answer is ""32,767"".

Outcomes