Red Hat NETWORK SATELLITE 5.1.1 - RELEASE NOTES, Reference Manual

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Appendix C. Probes
216
Field Value
Critical Maximum Blocked Processes
Warning Maximum Blocked Processes
Critical Maximum Defunct Processes
Warning Maximum Defunct Processes
Critical Maximum Stopped Processes
Warning Maximum Stopped Processes
Critical Maximum Sleeping Processes
Warning Maximum Sleeping Processes
Critical Maximum Child Processes
Warning Maximum Child Processes
Table C.22. Linux::Process Counts by State settings
C.5.9. Linux::Process Count Total
The Linux::Process Count Total probe monitors a system and collects the following metric:
• Process Count — The total number of processes currently running on the system.
Requirements
— The Red Hat Network Monitoring Daemon (
rhnmd
) must be running on the
monitored system to execute this probe.
Field Value
Timeout* 15
Critical Maximum Process Count
Warning Maximum Process Count
Table C.23. Linux::Process Count Total settings
C.5.10. Linux::Process Health
The Linux::Process Health probe monitors user-specified processes and collects the following metrics:
• CPU Usage — The CPU usage rate for a given process in milliseconds per second. This metric
reports the
time
column of
ps
output, which is the cumulative CPU time used by the process. This
makes the metric independent of probe interval, allows sane thresholds to be set, and generates
usable graphs (i.e. a sudden spike in CPU usage shows up as a spike in the graph).
• Child Process Groups — The number of child processes spawned from the specified parent
process. A child process inherits most of its attributes, such as open files, from its parent.
• Threads — The number of running threads for a given process. A thread is the basic unit of CPU
utilization, and consists of a program counter, a register set, and a stack space. A thread is also
called a lightweight process.
• Physical Memory Used — The amount of physical memory (or RAM) in kilobytes used by the
specified process.
• Virtual Memory Used — The amount of virtual memory in kilobytes used by the specified process, or
the size of the process in real memory plus swap.