23 Feb '12, 8pm

On Ruby: Real World Performance Profiling:

It looks like my post on Ruby 1.9.0 performance is drawing some criticism over on on reddit . I already updated the original post to deal with a comment by ‘gravity’. In a later comment, ‘Ganryu’ wrote “I don’t get it… isn’t this mainly IO dependent?” Since he doesn’t have access to the code for LogWatchR he can’t do the profiling to find this out, but it’s the same kind of assumption that a lot of people make when they decide to ‘optimize’ code. LogWatchR runs fast enough for my purposes (it takes less than 15 seconds to analyze 20 minutes worth of log entries), so I’ve never bothered profiling it before. Since it’s come up, I decided to give it a whirl. I cranked up the latest version of ruby-prof and saw the following: /usr/bin/ruby-prof logwatcher.rb < 20_minute_log Thread ID: 1075677140 Total: 32.65 %self total self wait child calls name 39.75 24.43 12.98 0.00 11.45 7...

Full article: http://on-ruby.blogspot.com/2007/12/real-world-performanc...

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