Monthly Archives: November 2012

Profiling Ruby, or, How I Made Rails Start Up Faster

Last week Ruby application startup got about 2-3x faster when four patches of mine were committed to the MRI/CRuby interpreter. The improvements will be in the upcoming Ruby 2.0 release. The techniques I used to identify what was slow, so I could fix it, are accessible to anyone and are useful for diagnosing any performance […]

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