rb_stat.d - Ruby operation stats using DTrace. rb_stat.d [interval [count]] This traces activity from all Ruby programs on the system that are running with Ruby provider support. The numbers are counts for the interval specified. The default interval is 1 second. If you see a count in "EXECS" but not in the other columns, then your Ruby software is probably not running with the DTrace Ruby provider. See Ruby/Readme. Filename and method names are printed if available. Any Evolving - uses the DTrace Ruby provider, which may change as additional features are introduced. Check Ruby/Readme to see what version these scripts are based on.

Default output, # rb_stat.d

EXEC/s Ruby programs executed per second, including those without Ruby provider support

METHOD/s Methods called, per second

OBJNEW/s Objects created, per second

OBJFRE/s Objects freed, per second

RAIS/s Raises, per second

RESC/s Rescues, per second

GC/s Garbage collects, per second

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