HP Insight Management Agents - Manual (Page 127)

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Context Block Queue/sec—Rate per second at which the work context blocks must be placed
on the FSP queue of the server to await server action.
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% Total PageFile Usage (Thresholds Supported) —Amount in percent of the Page File instance
in use. For details, see the Process Object: Page File Bytes information.
Memory
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Available KBytes —Amount of physical memory available to processes running on the computer.
It is calculated by summing space on the Zeroed, Free, and Stand-by memory lists. Free memory
is ready for use. Zeroed memory is memory filled with zeros to prevent later processes from
seeing data used by a previous process. Standby memory is memory removed from a working
set (its physical memory) of a process in route to a disk, but is still available to be recalled.
This counter displays the last observed value only; it is not an average.
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Pages/sec—Number of pages read from or written to disk to resolve hard page faults. Hard
page faults occur when a process requires code or data that is not in its working set or
elsewhere in physical memory, and must be retrieved from disk. This counter was designed
as a primary indicator of the faults that cause system-wide delays. It is the sum of Memory:
Pages Input/sec and Memory: Pages Output/sec. It is counted in numbers of pages, so it can
be compared to other counts of pages, such as Memory: Page Faults/sec, without conversion.
It includes pages retrieved to satisfy faults in the file system cache (usually requested by
applications) and in non-cached mapped memory files. This counter displays the difference
between the values observed in the last two samples, divided by the duration of the sample
interval.
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Pages Input/sec—Number of pages read from disk to resolve hard page faults. Hard page
faults occur when a process requires code or data that is not in its working set or elsewhere
in physical memory, and must be retrieved from disk. This counter was designed as a primary
indicator of the faults that cause system-wide delays. It includes pages retrieved to satisfy faults
in the file system cache (usually requested by applications) and in non-cached mapped memory
files. This counter counts numbers of pages, and can be compared to other counts of pages,
such as Memory: Page Faults/sec, without conversion. This counter displays the difference
between the values observed in the last two samples, divided by the duration of the sample
interval.
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Pages Output/sec—Number of pages written to disk to free up space in physical memory.
Pages are written back to disk only if they are changed in physical memory, so they are likely
to hold data, not code. A high rate of pages output might indicate a memory shortage.
Windows NT writes more pages back to disk to free up space when physical memory is in
short supply. This counter counts numbers of pages, and can be compared to other counts of
pages, without conversion. This counter displays the difference between the values observed
in the last two samples, divided by the duration of the sample interval.
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Page Reads/sec—Number of times the disk was read to resolve hard page faults. Hard page
faults occur when a process requires code or data that is not in its working set or elsewhere
in physical memory, and must be retrieved from disk. This counter was designed as a primary
indicator of the kinds of faults that cause system-wide delays. It includes reads to satisfy faults
in the file system cache (usually requested by applications) and in non-cached mapped memory
files. This counter counts numbers of read operations, without regard to the numbers of pages
retrieved by each operation. This counter displays the difference between the values observed
in the last two samples, divided by the duration of the sample interval.
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Page Writes/sec—Number of times pages were written to disk to free up space in physical
memory. Pages are written to disk only if they are changed while in physical memory, so
they are likely to hold data, not code. This counter counts write operations, without regard
to the number of pages written in each operation. This counter displays the difference between
the values observed in the last two samples, divided by the duration of the sample interval.
Sub-system Classification 127