js_who.d - trace JavaScript function execution by process using DTrace. js_who.d This traces JavaScript activity from all browsers on the system that are running with JavaScript provider support. Filenames are printed if available. Any Evolving - uses the DTrace JavaScript provider, which may change as additional features are introduced. Check JavaScript/Readme to see what version these scripts are based on.

Default output, # js_who.d

PID Process ID of JavaScript

UID User ID of the owner

FUNCS Number of function calls

FILE Pathname of the JavaScript program

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. js_who.d will run until Ctrl-C is hit. Brendan Gregg [CA, USA] dtrace(1M)