21 Mar '13, 3pm

New post by Ryo Onodera: Profiling JIT-ted Ruby code with OProfile

samples % linenr info app name symbol name 3468 27.0388 instructions.cpp:82 rbx rubinius::MachineCode::interpreter(rubinius::State*, rubinius::MachineCode*, rubinius::InterpreterCallFrame*) 3048 23.7642 loop.rb:7 5060.jo _X_Object#forever$block@1 # => Wow, the name of JIT-ted Ruby code is shown along side C++ function symbols! 1044 8.1397 jit_util.cpp:848 rbx rbx_push_local_depth 947 7.3834 (no location information) rbx __x86.get_pc_thunk.bx 916 7.1417 jit_util.cpp:787 rbx rbx_set_local_depth 781 6.0892 block_environment.cpp:365 rbx rubinius::BlockEnvironment::call(rubinius::State*, rubinius::CallFrame*, rubinius::Arguments&, int) 639 4.9821 block_environment.cpp:62 rbx rubinius::BlockEnvironment::invoke(rubinius::State*, rubinius::CallFrame*, rubinius::BlockEnvironment*, rubinius::Arguments&, rubinius::BlockInvocation&) 421 3.2824 variable_scope.cpp:108 rbx rubinius::Vari...

Full article: http://rubini.us/2013/03/20/profiling-jitted-ruby-code-wi...

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