Each policy can
have multiple associated resource matching criteria and each criterion can then have its
own set of resource allocation parameters. You can allocate up to 99 percent of the CPU
to each process matching criterion, but the total cannot exceed 100 percent. The remaining
minimal 1 percent is reserved for use by processes placed in the default group.
NOTE WSRM will not enforce CPU allocation rules until resources begin to get used up. Until then,
all processes get as much CPU as they want. For example, if your server is running only 50 percent
CPU utilization, none of your CPU allocation policies will take effect even if you??™ve specified only that
a process should have 20 percent of your CPU resources. When your server starts to get closer to its
maximum utilization, the processes are constrained based on whatever policy you??™ve defined.
Figure 7-7. The completed new process matching criteria
225 Chapter 7: Resource Management and Performance Monitoring
The amount of processing time each process within a particular matching group gets
is defined by your selected management rule:
?–? Standard Default setting. The operating system, not WSRM, is in charge of
distributing CPU processing time to each process.
?– Equal per process WSRM will make every process within a group use up
the same amount of CPU cycles. All processes within a particular group are,
however, constrained by the overall total percentage you specified in your
policy.
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