HP Insight Management Agents - Manual (Page 116)

• Current Bandwidth (Mbits/sec)—Estimate of the current bandwidth of the interface in
megabits per second. For interfaces that do not vary in bandwidth or for those where no
accurate estimation can be made, this value is the nominal bandwidth.
• Bytes Sent/sec—Rate at which bytes are sent on the interface, including framing characters.
• Bytes Received/sec—Rate at which bytes are received on the interface, including framing
characters.
• Packets Sent/sec—Rate at which packets are sent on the network interface.
• Packets Received/sec—Rate at which packets are received on the network interface.
Physical Disks
• Volume—Name of the physical drive for which statistical information is gathered.
• Queue Length—Average number of both read and write requests that were queued for the
selected disk during the sample interval.
• Disk Busy Time %—Percentage of elapsed time that the selected disk-drive is servicing read
or writes requests.
Processes
• Process—Name of the task for which statistical information is gathered.
• Threads—Number of threads currently active in this process. An instruction is the basic
unit of execution in a processor, and a thread is the object that executes instructions. Every
running process has at least one thread.
• Private Bytes—Current number of bytes this process has allocated that cannot be shared
with other processes.
• PageFile Bytes—Current number of bytes this process has used in the paging files. Paging
files are used to store pages of memory used by the process that are not contained in other
files. All processes share paging files and a lack of space in paging files can prevent other
processes from allocating memory.
• Working Set—Current number of bytes in the working set of this process. The working set
is the set of memory pages touched recently by the threads in the process. If free memory
in the computer is above a threshold, pages are left in the working set of a process even if
they are not in use. When free memory falls below the threshold, pages are trimmed from
working sets. If they are needed, they are soft-faulted back into the working set before they
leave main memory.
• Page Faults/sec—Rate at which the page faults occur in the executing threads within this
process. A page fault occurs when a thread refers to a virtual memory page that is not in its
working set in main memory. This does not cause the page to be fetched from disk if it is
on the standby list and already in main memory, or if it is in use by another process with
whom the page is shared.
• % CPU Time—Percentage of elapsed time that all the threads of this process used the
processor to execute instructions. An instruction is the basic unit of execution in a computer,
a thread is the object that executes instructions, and a process is the object created when a
program is run. Code executed to handle some hardware interrupts and trap conditions are
included in this count. On multi-processor machines, the maximum value of the counter is
100 % times the number of processors.
• % Privileged CPU Time—Percentage of elapsed time that the threads of the process have
spent executing code in privileged mode. When a Windows NT system service is called, the
service often runs in privileged mode to gain access to system-private data. Such data is
protected from access by threads executing in user mode. Calls to the system can be explicit
or implicit, such as page faults or interrupts. Unlike some early operating systems, Windows
NT uses process boundaries for subsystem protection in addition to the traditional protection
of user and privileged modes. These subsystem processes provide additional protection.
116 Agent information