Lizzette,
Echoing my earlier comment, if SHRLIBRGN could be pushed above the bar,
then it would largely become something that most of us would no longer need
to worry about, as it wouldn't then be stealing any footprint from extended
private (which is the main headache/issue in my view). Throw a
I have opened an ETR with IBM and pretty much found the same thing as
others. Not well managed.
So I have requested change/enhancement requests.
Here is what IBM has opened on my behalf
MR1110115444 - Need tools to monitor the SHRLIBRGNSIZE usage SMF records
would help
MR1110114548
Some additional info:
Example output from the SHRLIBRGN contents rexx is given below:
Usage Meg Used-Unused-Pgs Pathname
441 40 216 /CTQ131/usr/lpp/java/J5.0/bin/libnet.so
441 142 114 /CTQ131/usr/lpp/java/J5.0/bin//libjclscar_23.so
441 63 193
Lizzette, I think what may help you out here a little in terms of seeing
what is 'inside' SHRLIBRGN is this nice little REXX:
ftp://public.dhe.ibm.com/s390/zos/tools/wjsigshl/wjsigshl.txt
Its accessible via the USS tools toys site (although wasnt at the time we
were given it, a few years back),
On Sat, Nov 5, 2011 at 3:25 PM, Graham Harris harris...@gmail.com wrote:
deleted
Would be nice if IBM could allow this to be managed a little better than
the first-come-first-served principle, although I cant think right now how
it could easily be done any different, I must admit!
Moving
In 039001cc9709$8dae4510$a90acf30$@mindspring.com, on 10/30/2011
at 09:40 AM, Lizette Koehler stars...@mindspring.com said:
This is not something I just want to blindly increase as the
documentation is not clear on how my overall system performance is
going to be impacted.
I doubt that
This is not something I just want to blindly increase as the
documentation is not clear on how my overall system performance is
going to be impacted.
I doubt that performance is an issue. What might be a problem is a
shortage of private virtual storage above the line.
BTW, am I the only one
On Mon, 31 Oct 2011 12:23:00 -0500 Shmuel Metz (Seymour J.) wrote:
...
BTW, am I the only one to think of Contract Bridge when I see a
reference to the line?
Can't say I've ever confused the two in all these years.
Of course, now that you've mentioned it ...
Shane ...
Conservatism here--rejection of any reflexive, unthinking enlargement
of the [Unix] shared-library region size--is the right stuff.
I suspect, however, that my earlier post erred in not being
unambiguously directive. The performance penalties are, this time,
all on the down side, They are
http://www-01.ibm.com/support/docview.wss?uid=swg21178068
If the shared library cache is not big enough, then z/OS will revert
to normal storage use and the load module will be loaded into the
broker address space.
[That would mean multiple copies of the programs.]
I'm ignorant of this. But did a search in IBMLink.
It appears that there are shared libraries in z/OS UNIX which are
loaded somewhere? (not documented where). The size of this area is
specified in the SHRLIBRGNSIZE parameter. The load modules loaded into
this area are .so UNIX dynamic subroutines
Lizette,
Your current value, 64MiB, is the very conservative z/OS default. If
you are 1) making significant use of Java and 2) have multiple CICS
regions in which it is in use you may safely double it and then work
back down by observing how much of it is in use over an interval of
one or two
John McKown Wrote:
I'm ignorant of this. But did a search in IBMLink.
It appears that there are shared libraries in z/OS UNIX which are loaded
somewhere?
(not documented where). The size of this area is specified in the
SHRLIBRGNSIZE
parameter. The load modules loaded into this area are
On Sun, Oct 30, 2011 at 8:40 AM, Lizette Koehler
stars...@mindspring.com wrote:
John and Mike
Thanks. I guess this is going to be an ETR to IBM. I am not sure how to
monitor or identify when more is better or if I can use less. This happened
after an IPL, so I am sure that there are new
Tonight I got a message of BPXI039I for the SHRLIBRGNSIZE being 100% for the
value of 67108864
Now it tells me to raise this value with a SETOMVS or SET OMVS. However, is
there a way to see what is consuming this resource? And how to determine
how to safely raise the value if necessary?
I want
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