NAME

js_stat.d - JavaScript operation stats using DTrace.

SYNOPSIS

js_stat.d [interval [count]]

DESCRIPTION

This traces activity from all browsers on the system that are running with JavaScript provider support.

The numbers are counts for the interval specified. The default interval is 1 second.

Filename and function names are printed if available.

OS

Any

STABILITY

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.

EXAMPLES

Default output,: # js_stat.d

FIELDS

EXEC/s: JavaScript programs executed per second
FUNCS/s: Functions called, per second
OBJNEW/s: Objects created, per second
OBJFRE/s: Objects freed (finalize), per second

DOCUMENTATION

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.

EXIT

js_stat.d will run until Ctrl-C is hit.

AUTHOR

Brendan Gregg [CA, USA]