HP Insight Control - Manual (Page 50)

Processors Status
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Average Processor Utilization %—Average percentage of time all the processors on the system
are busy executing non-idle threads. On a multiprocessor system, if all processors are always
busy, the metric reads 100%; if all processors are 50% busy, the metric reads 50%, and so
on. Average Processor Busy % can be viewed as the fraction of the time spent doing useful
work.
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Each processor is assigned an idle thread in the idle process consuming unproductive processor
cycles not used by another thread. Some processors might be more heavily loaded than others.
In this case, the total processor time percentage is the average of the loads on each processor.
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Busiest Processor Utilization %—Average utilization of the logical processor with the highest
utilization. This value is equal to the Average Processor Utilization % if the server is using a
processor core.
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Processor Busy %—Percentage of time that the processor is executing a non-idle thread.
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Context Switches/Sec—Number of thread context switches at which all processors on the
server are switched from one thread to another each second. Context switches occur when a
running thread voluntarily relinquishes the processor, is preempted by a higher-priority ready
thread, or switches between user mode and privileged (kernel) mode to use a subsystem
service.
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Interrupts/Sec—Average number of hardware interrupts the processor is receiving and servicing
each second.
Average Processor Utilization % and Highest Processor Utilization % are used to determine processor
performance.
Processors Inventory
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Processor Support—Number of processors supported by the server
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Processors—Number of processors installed on the server and a summary of the processors
(type, speed, and cache size)
Memory
The following information is provided for memory.
Memory Status
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Available MBytes—Memory that is not currently allocated to any process or is unused. A low
Available MBytes value can indicate memory allocation bottlenecks.
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Page Reads/Sec—Number of times the disk was read to retrieve pages of virtual memory
necessary to resolve page faults each second. Multiple pages can be read during a single
disk read operation.
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Pages Input/Sec—Number of pages read from the disk to resolve memory references to pages
that were not in memory at the time of the reference. This counter includes paging traffic on
behalf of the system cache to access file data for applications. It is important to observe this
counter if you are concerned about excessive memory usage, or thrashing, and the excessive
paging that can result.
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Page Faults/Sec—Average number of page faults each second. A page fault occurs when a
process refers to a virtual memory page that is not in its working set in main memory. A page
fault does not cause the page to be fetched from disk if that page is on the standby list and
50 Measurement parameter matrix