tcl_who.d - trace Tcl calls by process using DTrace. tcl_who.d This traces activity from all Tcl processes on the system with DTrace provider support (tcl8.4.16). Calls is a measure of activity, and is a count of the procedures and commands that Tcl called. The argument list is truncated at 55 characters (up to 80 is easily available). To easily read the full argument list, use other system tools; on Solaris use "pargs PID". Any Evolving - uses the DTrace Tcl provider, which may change as additional features are introduced. Check Tcl/Readme to see what version these scripts are based on.

Default output, # tcl_who.d

PID Process ID of Tcl

UID User ID of the owner

CALLS Number of calls made (proc + cmd)

ARGS Process name and arguments

See the DTraceToolkit for further documentation under the Examples, Notes and Docs directories. The example files may be especially useful as they aim to demonstrate how to interpret the output. tcl_who.d will run until Ctrl-C is hit. Brendan Gregg [CA, USA] dtrace(1M)