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LPAR processor/virtual processor settings


 
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Operating Systems AIX LPAR processor/virtual processor settings
# 1  
Java LPAR processor/virtual processor settings

Question is on setting of Physical and Virtual processors for LPARs to make proper use of virtualization capabilities.

Environment is a 8-way p570 with 4 LPARs.

lparVIO1 and lparVIO2:
AIX 5300-04-01
Mode/Type= Shared-SMT/Capped
Minimum Processors= 0.10
Desired Processors= 0.50
Maximum Processors= 1.00
Minimum Virtual Processors= 1
Desired Vritual Processors= 2
Maximum Vritual Processors= 4

lparORA:
AIX 5300-04-CSP
Mode/Type= Shared-SMT/Capped
Minimum Processors= 2.00
Desired Processors= 4.00
Maximum Processors= 8.00
Minimum Virtual Processors= 4
Desired Vritual Processors= 4
Maximum Vritual Processors= 64

lparDB2:
AIX 5300-05-03
Mode/Type= Shared-SMT/Capped
Minimum Processors= 3.00
Desired Processors= 3.00
Maximum Processors= 8.00
Minimum Virtual Processors= 3
Desired Vritual Processors= 3
Maximum Vritual Processors= 64

The lparORA only really needs 4 processors during a 1am to 5am (monday-friday) window for some batch jobs which are cpu intensive. At all other times the lparORA at most uses only 50% of it's current entitled capacity of 4.00. So the question is how to set the lpar processors allocations to let the lparORA use up to 4 processors during the 1am to 5am window
but let the lparDB2 use up to 6 processors. The numbers of 4 and 6 are driven by the licensing of Oracle (4 dual-core processors) and DB2 (6 dual-core processors)..

Does the following then make sense (changing all to Uncapped and adjusting the processors settings):
lparVIO1 and lparVIO2:
AIX 5300-04-01
Mode/Type= Shared-SMT/Uncapped
Minimum Processors= 0.10
Desired Processors= 0.50
Maximum Processors= 1.00
Minimum Virtual Processors= 1
Desired Vritual Processors= 2
Maximum Vritual Processors= 4

lparORA:
AIX 5300-04-CSP
Mode/Type= Shared-SMT/Uncapped
Minimum Processors= 2.00
Desired Processors= 2.00
Maximum Processors= 4.00
Minimum Virtual Processors= 4
Desired Vritual Processors= 4
Maximum Vritual Processors= 4

lparDB2:
AIX 5300-05-03
Mode/Type= Shared-SMT/Uncapped
Minimum Processors= 2.00
Desired Processors= 2.00
Maximum Processors= 6.00
Minimum Virtual Processors= 6
Desired Vritual Processors= 6
Maximum Vritual Processors= 6

Any thoughts or suggestions would be appreciated.
# 2  
If you want lparORA to have priority over lparDB2 you need to make lparORA have more weight than lparDB2. That should do the trick.

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