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02-01-2007
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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. |
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02-01-2007
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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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