NAME
cpuwalk.d - Measure which CPUs a process runs on. Uses DTrace.
SYNOPSIS
cpuwalk.d [duration]
DESCRIPTION
This program is for multi-CPU servers, and can help identify if a process is running on multiple CPUs concurrently or not.
A duration may be specified in seconds.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
- this runs until Ctrl-C is hit,
-
# cpuwalk.d
- run for 5 seconds,
-
# cpuwalk.d 5
FIELDS
- PID
-
process ID
- CMD
-
process name
- value
-
CPU id
- count
-
number of samples (sample at 100 hz)
DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with verbose descriptions explaining the output.
EXIT
cpuwalk.d will run until Ctrl-C is hit, or the duration specified is reached.
SEE ALSO
threaded.d(1M), dtrace(1M)