If you don't have a product, and you want to find out who is actively paging:
Do an IND USER userid for each machine:
ind user linux69
USERID=LINUX69 MACH=ESA STOR=160M VIRT=V XSTORE=NONE
IPLSYS=DEV 0150 DEVNUM=00014
PAGES: RES=00035557 WS=00040960 LOCKEDREAL=00000013 RESVD=00000000
NPREF=00006334 PREF=00000000 READS=00167708 WRITES=00143507 <========
XSTORE=000016 READS=109416 WRITES=243855 MIGRATES=134423
CPU 00: CTIME=96:56 VTIME=017:43 TTIME=064:50 IO=961712
RDR=000000 PRT=000469 PCH=000000
Look at the READS and WRITES on the 4th line. That is total page reads and
writes.
Put this in a REXX exec, and do a delta after, say 60 seconds. The one that is
changing the most, is the one that is paging the most.
But I don't know what good that information would do. Paging isn't due a
single virtual machine, but rather the sum of the working set size of all
machines vs available storage. Chances are, the largest guest machine will
page the most as it has the most pages to keep in storage.
Tom Duerbusch
THD Consulting
>>> "Martin, Terry R. (CMS/CTR) (CTR)" <[email protected]> 2/10/2009
>>> 8:04 AM >>>
Hi
I seem to be doing a lot of paging currently on my z/VM 5.3 system I am
running multiple Linux guests including a large Oracle guest (40 GB
memory size). How can I find out 1) who is doing the majority of the
paging and along with that 2) I believe that some of the paging slots
are old data in other words the pages are not going away after a task is
complete how can I research this. The Linux guests have not been
recycled but I thought if they had allocated the slots that after a task
within the Linux guest completed that the slots would be reclaimed. Any
thoughts on all of this would be appreciated.
Thank You,
Terry Martin
Lockheed Martin - Information Technology
z/OS & z/VM Systems - Performance and Tuning
Cell - 443 632-4191
Work - 410 786-0386
[email protected]
