Manual Reference Pages - SAMPLE (8)
- examine backtrace of system processes
utility performs a periodic examination of stacks (user
and kernel) for all processes on the system.
option specifies the number of samples to take; the
option indicates the duration, in ms (default is 20).
option will attempt to symbolicate the addresses. Note
that this option may not be enabled at compile time, but
will not generate an error if so.
utility requires a corresponding device driver to be loaded.
Only one instance can be run at a time.
utility was written by iXsystems in 2014, inspired heavily by
the spindump utility in Mac OS X by Apple, Inc.
Only one instance may be run at a time.
The name leaves a lot to be desired.
The sampling of idle processes can take longer than the
duration, resulting in fewer samples than requested.
Even when enabled, the symbolication could be better.
Visit the GSP FreeBSD Man Page Interface.
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