-----------------------<snip>-----------------------------
Hi,
We have the following IBM box :
*IBM z890-2086-A04 Model 6260 with SN 2549A ; with zOS 1.7. in 64 bit
mode ; z990 Exploitation Feature (there are two IFL in this configuration).
We have 5 LPAR's defined on this box and 1 Linux Lpar.
None of these LPAR's are capped and we are running at 150% CPU busy on
the Production Lpar.
Questions :
1. Would these different LPAR's not effect each other
-----------------------<unsnip>--------------------------
Yes, the LPARs will affect each other. There's only so much CPU service
in the pie, no matter how you slice it. Dividing it up 5 ways instead of
three means that each LPAR could get a smaller slice. Plus you have the
overhead difference between 5 LPARs and 3 LPARs.
-----------------------<snip>---------------------
2. Why do I need 2 test LPAR's in this setup
-----------------------<unsnip>----------------------
I know of no technical reason; perhaps there are political or business
reasons in your shop.
-----------------------<snip>-------------------------
3. Should it not be more beneficial to remove some of these LPAR's. So
instead of 5 , I rather define 3.
---------------------<unsnip>------------------------
I would recommend removing 2 LPARs and consolidating workloads. But I'm
thinking from a technical standpoint; you may have other considerations,
as in point 2. YMMV. Beware of possible "turf wars" within your shop.
You may also have to rethink LPAR weighting factors.
------------------------<snip>------------------------
Some people are arguing that we should move some of the Test CICS'se ,
off the Prod LPAR and into a Test LPAR. I prefer to run less LPAR's and
keep everything on the Prod Lpar.
What do you think ?
------------------------<unsnip>---------------------
I'm a firm believer in separating TEST workloads from PROD workloads and
keeping each in its own LPAR. This way, a run-away CICS transaction in a
test CICS can't have anywhere near as much impact on the overall PROD
workload. Again, YMMV.
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