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by ryan davis



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zenprofile

A faster version of the standard library profiler plus extra tools.

** Note: ** This project is EOL’ed.

zenprofiler helps answer WHAT is being called the most. spy_on helps answer WHERE those calls are being made. ZenProfiler provides a faster version of the standard library ruby profiler. It is otherwise pretty much the same as before. spy_on provides a clean way to redefine a bottleneck method so you can account for and aggregate all the calls to it.

% ruby -Ilib bin/zenprofile misc/factorial.rb 50000
Total time = 3.056884
Total time = 2.390000

          total     self              self    total
% time  seconds  seconds    calls  ms/call  ms/call  name
 50.70     1.64     1.64    50000     0.03     0.05 Integer#downto
 19.63     2.27     0.63   200000     0.00     0.00 Fixnum#*
 14.19     2.73     0.46    50000     0.01     0.05 Factorial#factorial
  9.93     3.05     0.32        1   320.36  3047.10 Range#each
  5.54     3.23     0.18        2    89.40   178.79 ZenProfiler#start_hook

Once you know that Integer#downto takes 50% of the entire run, you can use spy_on to find it:

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if ENV['SPY'] then
  require 'spy_on'

  Integer.spy_on :downto
end
% SPY=1 ruby -Ilib misc/factorial.rb 50000
Spying on Integer#downto

Integer.downto

50000: total
50000: ./misc/factorial.rb:6:in `factorial' via 
       ./misc/factorial.rb:6:in `factorial'

Get The Code

If you just want to use zenprofile, you can install it via RubyGems:
gem install zenprofile
Fork me on GitHub If you want to hack on zenprofile, clone it from GitHub:
git clone git://github.com/seattlerb/zenprofile

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