08-04-2010
Usually I only use top.
Top will display a chart that is updated frequently (every second by default on my machine).
It gives the CPU usage, % used by the user, % by the system, and % idle.
In the chat it will tell you what % of the cpu each process is using, and how much processor time it has consumed up until that point (that is the 4th column named time). It also gives information on memory usage, current state, PID, user, and such.
It is a very useful utility and should get you what you need to know.
One thing to note that I have found with multicore processors. The % cpu use on each process is a % of a single core. Thus with a quad core you can have two processes using 100% and still have the total cpu use read as 50%.
Hope this helps.
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PMC(1) BSD General Commands Manual PMC(1)
NAME
pmc -- performance-monitoring counter interface for command execution
SYNOPSIS
pmc -h
pmc -C
pmc -c event command [options ...]
DESCRIPTION
pmc is a means of using a processor's performance-monitoring counter (PMC) facility to measure various aspects of a program's execution. It
is meant to be used in a fashion similar to time(1).
The arguments are as follows:
-h Display a list of performance counter events available on the system.
-C Cancel any performance counters that are currently running.
-c event
Count the event specified by event while running the command.
DIAGNOSTICS
PMC support is not compiled into the kernel Performance-monitoring counter support has not been compiled into the kernel. It may be
included using the PERFCTRS option. See options(4) for details.
PMC counters are not supported by CPU Performance-monitoring counters are not available for the CPU.
SEE ALSO
time(1), options(4)
HISTORY
The pmc command first appeared in NetBSD 1.6.
AUTHORS
The pmc command was written by Frank van der Linden <fvdl@wasabisystems.com>. The kernel support for reading performance counters on the
i386 architecture was written by
Jason R. Thorpe <thorpej@zembu.com>.
BUGS
The pmc command currently only supports performance-monitoring counters on the i386 architecture.
BSD
October 24, 2000 BSD