Hello,
since a while we recognized that in some of our LPARs the auxiliary storage
usage is rising steadily and we can't find out why this happens. I seems that
one or more address spaces are not releasing their slots correctly.
Here are some sample data from SLOTCNT recorded in a one week intervall.
+ SLOTCNT PAGE DATASET SLOT USAGE
REPORT PAGE 1
ASID JOBNAME TOTAL SLOTS VIO SLOTS NON-VIO SLOTS
FRAMES
---- -------- ------------------- ------------------- -------------------
-------------------
0003 *SHARED* 3,410
0003 *HVSHR* 570,895
320,636
0003 *HVCOMM* 14,107
7,246
0003 RASP 588,464 0 588,464
472
002D ZFS 243,711 0 243,711
139,081
0067 DB41DBM1 165,319 0 165,319
234,079
005B OMIICMS 36,828 0 36,828
10,417
0083 OMIID5 23,501 0 23,501
1,650
...
---- -------- ------------------- ------------------- -------------------
-------------------
--TOTAL- 1,394,356 0 1,394,356
1,464,576
--ASM--- 3,596,038 0 1,394,356
1,544,900
+ SLOTCNT PAGE DATASET SLOT USAGE
REPORT PAGE 1
ASID JOBNAME TOTAL SLOTS VIO SLOTS NON-VIO SLOTS
FRAMES
---- -------- ------------------- ------------------- -------------------
-------------------
0003 *SHARED* 3,404
0003 *HVSHR* 742,288
278,711
0003 *HVCOMM* 18,477
6,463
0003 RASP 764,241 0 764,241
448
002D ZFS 340,527 0 340,527
184,879
0067 DB41DBM1 205,769 0 205,769
240,892
000F OMVS 22,622 0 22,622
11,874
008F OMIICMS 21,094 0 21,094
21,326
...
ASID JOBNAME TOTAL SLOTS VIO SLOTS NON-VIO SLOTS
FRAMES
---- -------- ------------------- ------------------- -------------------
-------------------
--TOTAL- 1,676,677 0 1,676,677
1,524,741
--ASM--- 3,596,038 0 1,676,677
1,544,905
As you can see the aux storage usage rises from about 39% to about 47% and
still growing.
OK, we might do PAGEADDs to avoid AUX storage shortages, but we think it would
be better to find the cause for this situation, which is, at least from our
point of view not normal.
Thanks in advance for any ideas.
Kind regards.
Juergen Kehr
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