Re: Temporary storage movement over a day

"MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx> wrote on 11/08/2017
10:34:38 PM:

I was wondering if I could get some feedback in relation to the

temporary

storage values on busy systems from the WRKSYSSTS display. Both current
and peak.

I have check about 10 systems and all are under 10000 but none of these
systems are very large or very heavily utilised.

One system though has a figure of 130,640 and looking at a performance
graph this grows through the day and decreases overnight - just seemed
rather high to me but may be normal on a busy system. The system has

3450

active jobs currently.

It is going to vary wildly from shop to shop based on the number
of and working set size of long running jobs. About a year ago we
replaced the box and disk subsystem and began having performance issues
where things would get slower and slower until finally coming to a halt
before the end of day. We would have to shut down QINTER and start it
back up to get everything going again. IBM later identified a problem
with the new disk subsystem so we went back to the same type of subsystem
we previously had and the problem went away. But, we are still working on
redesigning some of our long running jobs to reduce their working set size
-- by moving modules to separate programs and changing service program
binding to *DEFER.

Current temporary used . : 3320 G
Peak temporary used . . : 4693 G

Jobs in system . . . . . : 413256
% system ASP used . . . : 64.4176

Sincerely,

Dave Clark