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{ Tag Archives } lightning

pecobro: the performance code browser (early stage)

At the beginning of last week, I had gotten dtrace working on a Mac Mini using the Mozilla javascript-provider probes.  Very cool stuff, but it left me with several questions about what would really be best to do next: How do I best understand what I’m seeing?  (Most of the codebase is brand new to […]

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Mozilla JavaScript DTrace Probes, visichron style

  This visualization is the result of an adapted visichron.py script (from my chronicle-recorder ‘chroniquery’ bindings) run against the output of a custom DTrace script (using the Mozilla JS providers) on OS X.  It’s a proof-of-possibility rather than anything immediately useful. The differences from the last visichron post (using chronicle-recorder as a back-end) are: Node […]

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