Hi. I'm right in the situation where I would like to find out some performance characteristics for various parts of Ruby, to optimize an application. Is there any resources available for this? To make it concrete, let's take two examples. I've recently written a hybrid state-based, table-driven LL(1) parser, where I gather productions (in the form of symbols) on a stack, and then execute these with send(), until a get back the next terminal. This works really great, but right now I'm wondering how cheap send() is, compared to using a real table-driven approach. Next example: there's fairly heave use of Class#=== throughout the application, and the profiler says I spend much time there. It's a fairly small class of Class comparisons I'm doing, though, so maybe it would get me better performance by polluting the global namespace like this: class Object def __is_directive_token?; false; end def __is_sequence_start_token?; false; end end class Token end class DirectiveToken def __is_directive_token?; true; end end and just do tok.__is_directive_token? instead of DirectiveToken === tok. Any thoughts in this? Is there any place to find general information this, or I'm out in the wild right now? Regards Ola B.
on 2006-05-23 10:11