totherik/gist:3379924

Created August 17, 2012 15:31

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Profiling JavaScript in V8

Raw

$ git clone git://github.com/v8/v8.git v8 && cd v8
$ make dependencies # or mkdir build/gyp && git clone git://github.com/svn2github/gyp.git build/gyp
$ make native # (or the like: `$ make ia32`, etc)
$ out/native/d8 --prof 'test.js' # generates 'v8.log'
$ tools/mac-tick-processor # processes the generated 'v8.log'

Additional d8 options

--trace-deopt - log optimizing compiler bailouts
--trace-opt - log names of optimized functions to stdout

Resources

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