From: Tim Becker <a2800276@...>
Date: 2007-10-30T23:59:09+09:00
Subject: Re: Ruby DTrace (on OSX Leopard)

> Neither Instruments nor dtrace -l shows up any of the Joyent probes
> that are supposed to be there. I guess I'm just doing something wrong,
> but I can only find little blog articles with people cheering that OSX
> contains DTrace, no examples of it actually in use.


Preliminary experiments show that I need to hook dtrace up with a
running ruby instance. D'uh.
Maybe I should read the documentation... E.g. this:

dtrace -s print_memory_usage.d -p <pid of ruby interpreter>

works, in case someone else couldn't figure it out.
   -tim