rb_malloc.d - Ruby operations and libc malloc statistics. rb_malloc.d { -p PID | -c cmd } 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_malloc.d

1 Filename of the Ruby program

2 Type of operation (method/objnew/startup)

3 Name of operation

This script is not 100% accurate; This prints libc malloc() byte distributions by "recent" Ruby operation, which we hope will be usually relevant. This is an experimental script that may be improved over time.

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