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In following single partition Commercial Performance Workload runs the average VIOS CPU
stayed under 40%. So we seem to have VIOS resource available but in a lot of customer
environments communications and other resources are also running and these resources will also
be routed through VIOS.
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
© Copyright IBM Corp. 2008 Chapter 14 DASD Performance 225
IBM i operating system CPU Usage While Running the Commercial Performance Workload
10
20
30
40
50
60
70
80
90
100
20000 25000 30000 35000 40000 45000 50000 55000 60000
Transactions/Minute
i5/OS % CPU
3 Dedicated Processors IBM i operating system Partition 1 Processor VIOS
3 Shared Processors IBM i operating system Partition 1 Processor VIOS
3.5 Shared Processors Partition IBM i operating system .5 Processor VIOS
VIOS CPU Usage While Running the Commercial Performance Workload
10
20
30
40
50
20000 25000 30000 35000 40000 45000 50000 55000
Transactions/Minute
VIOS % CPU
3 Dedicated Processors IBM i operating system Partition 1 Processor VIOS
3 Shared Processors IBM i operating system Partition 1 Processor VIOS
3.5 Shared Processors IBM i operating system Partition .5 Processor VIOS