Hi list,
We aim to cap the only active LPAR on the CEC(26 MSU) to 24 MSU.
But, I'm a bit confuse when I checked the RMF CPU Activity report as below,
which shows that with the interval, SYS2 was able to use up to 25 MSU.
(Highlighted)
So my questions are:
1. Is this because CPU capping is not working for only one active LPAR on
the CEC? If it's the case, any reference?
2. Or, this is related to the WEIGHT value we used to CAP? in our case, we
reference our CEC capacity is 26 MSU (about 171 MIPS), target to CAP 24 MSU
(160 MIPS).
. But, for client's sake, we use MIPS value as the WEIGHT,i.e 160. (as
highlighted in the report). And, this mislead the Lpar scheduler that it is
over 100% of the CEC. Thus,
SYS2 can use as much as it needs.
3. Or any other posibility?
Pls shed some light, thanks a lot!
PAGE 2
z/OS V1R8 SYSTEM ID SYS2 START
08/17/2010-03.00.00 INTERVAL 000.59.59
RPT VERSION V1R8 RMF END
08/17/2010-04.00.00 CYCLE 0.100 SECONDS
MVS PARTITION NAME SYS2 NUMBER OF PHYSICAL
PROCESSORS 4 GROUP NAME N/A
IMAGE CAPACITY 24
CP 2 LIMIT N/A
NUMBER OF CONFIGURED PARTITIONS 5
ICF 2
WAIT COMPLETION
NO
DISPATCH INTERVAL
DYNAMIC
--------- PARTITION DATA ----------------- -- LOGICAL PARTITION PROCESSOR
DATA -- -- AVERAGE PROCESSOR UTILIZATION PERCENTAGES --
----MSU---- -CAPPING-- PROCESSOR- ----DISPATCH TIME
DATA---- LOGICAL PROCESSORS --- PHYSICAL PROCESSORS ---
NAME S WGT DEF ACT DEF WLM% NUM TYPE EFFECTIVE
TOTAL EFFECTIVE TOTAL LPAR MGMT EFFECTIVE TOTAL
SYS2 A 160 0 25 YES 0.0 2 CP 01.55.49.238
01.55.53.278 96.52 96.57 0.06 96.52 96.57
SYS6 A 10 0 0 YES 0.0 2 CP 00.00.00.000
00.00.00.000 0.00 0.00 0.00 0.00 0.00
*PHYSICAL*
00.00.01.367 0.02 0.02
------------
------------ ------ ------ ------
TOTAL 01.55.49.238
01.55.54.645 0.08 96.52 96.59
CFP01AH2 A DED 1 ICF 00.59.59.655
00.59.59.725 99.99 99.99 0.00 50.00 50.00
CFP02AH2 A DED 1 ICF 00.59.59.666
00.59.59.708 99.99 99.99 0.00 50.00 50.00
*PHYSICAL*
00.00.00.422 0.01 0.01
------------
------------ ------ ------ ------
TOTAL 01.59.59.321
01.59.59.855 0.01 99.99 100.0
SYS8
--
Cobe Xu
Best Regards
-----------------------------------------------------------
zOS Performance & Capacity Analyst
E2E Performance Analyst
Email: [email protected]
-----------------------------------------------------------
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