March 2004
Intermediate to advanced
560 pages
14h 38m
English
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5.3. CPU Diagnostic Tools
Many tools provide data about currently executing processes and CPU load. Some important examples are ps, xload, and top. Glance and sar also supply CPU-related metrics. The machinfo tool (described in more detail in ”Machinfo” on page 79) provides information about the processors installed in an IPF system.
5.3.1. ps
Used for process status display, ps is perhaps the best known and most commonly used of all the performance tools. Its many options (see the man page on ps) allow for very specific display of process information. The following is an example showing output of ps -ef on a workstation. This display is limited to processes owned by UID peterw:
UID PID PPID C STIME TTY TIME COMMAND peterw 14336 14335 0 Jan ...
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