2.3.9 Notes regarding collection of processor information

The processor usage collected in a virtualized system might not yield the intended values. This is because the virtualized system divides up processor resources and dynamically allocates them to other logical partitions. For example, if significant amounts of processor resources are being used for a specific logical partition due to high load, only limited processor resources can sometimes be used on other logical partitions.

Figure 2‒4: Case in which collected values differ due to dynamic resource changes

Note that if an application on a given logical partition is using a physical processor, jobs on other logical partitions are cause to wait due to operation. In this case, processor usage cannot be accurately ascertained.

To Page Top