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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.68 by root, Fri Apr 25 07:14:33 2008 UTC vs.
Revision 1.70 by root, Fri Apr 25 07:25:44 2008 UTC

… …
870event models natively and with anyevent. The benchmark creates a lot of 870event models natively and with anyevent. The benchmark creates a lot of
871timers (with a zero timeout) and io watchers (watching STDOUT, a pty, to 871timers (with a zero timeout) and io watchers (watching STDOUT, a pty, to
872become writable, which it is), lets them fire exactly once and destroys 872become writable, which it is), lets them fire exactly once and destroys
873them again. 873them again.
874 874
875=head2 Explanation of the fields 875=head2 Explanation of the columns
876 876
877I<watcher> is the number of event watchers created/destroyed. Since 877I<watcher> is the number of event watchers created/destroyed. Since
878different event models feature vastly different performances, each event 878different event models feature vastly different performances, each event
879loop was given a number of watchers so that overall runtime is acceptable 879loop was given a number of watchers so that overall runtime is acceptable
880and similar between tested event loop (and keep them from crashing): Glib 880and similar between tested event loop (and keep them from crashing): Glib
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890all watchers, to avoid adding memory overhead. That means closure creation 890all watchers, to avoid adding memory overhead. That means closure creation
891and memory usage is not included in the figures. 891and memory usage is not included in the figures.
892 892
893I<invoke> is the time, in microseconds, used to invoke a simple 893I<invoke> is the time, in microseconds, used to invoke a simple
894callback. The callback simply counts down a Perl variable and after it was 894callback. The callback simply counts down a Perl variable and after it was
895invoked "watcher" times, it would C<< ->broadcast >> a condvar once. 895invoked "watcher" times, it would C<< ->broadcast >> a condvar once to
896signal the end of this phase.
896 897
897I<destroy> is the time, in microseconds, that it takes destroy a single 898I<destroy> is the time, in microseconds, that it takes destroy a single
898watcher. 899watcher.
899 900
900=head2 Results 901=head2 Results
901 902
902 name watcher bytes create invoke destroy comment 903 name watcher bytes create invoke destroy comment
903 EV/EV 400000 244 0.56 0.46 0.31 EV native interface 904 EV/EV 400000 244 0.56 0.46 0.31 EV native interface
904 EV/Any 100000 610 3.52 0.91 0.75 905 EV/Any 100000 610 3.52 0.91 0.75 EV + AnyEvent watchers
905 CoroEV/Any 100000 610 3.49 0.92 0.75 coroutines + Coro::Signal 906 CoroEV/Any 100000 610 3.49 0.92 0.75 coroutines + Coro::Signal
906 Perl/Any 10000 654 4.64 1.22 0.77 pure perl implementation 907 Perl/Any 16000 654 4.64 1.22 0.77 pure perl implementation
907 Event/Event 10000 523 28.05 21.38 5.22 Event native interface 908 Event/Event 16000 523 28.05 21.38 0.86 Event native interface
908 Event/Any 10000 943 34.43 20.48 1.39 909 Event/Any 16000 943 34.43 20.48 1.39 Event + AnyEvent watchers
909 Glib/Any 16000 1357 96.99 12.55 55.51 quadratic behaviour 910 Glib/Any 16000 1357 96.99 12.55 55.51 quadratic behaviour
910 Tk/Any 2000 1855 27.01 66.61 14.03 SEGV with >> 2000 watchers 911 Tk/Any 2000 1855 27.01 66.61 14.03 SEGV with >> 2000 watchers
912 POE/Event 2000 6644 108.15 768.19 14.33 via POE::Loop::Event
911 POE/Select 2000 6343 94.69 807.65 562.69 POE::Loop::Select 913 POE/Select 2000 6343 94.69 807.65 562.69 via POE::Loop::Select
912 POE/Event 2000 6644 108.15 768.19 14.33 POE::Loop::Event
913 914
914=head2 Discussion 915=head2 Discussion
915 916
916The benchmark does I<not> measure scalability of the event loop very 917The benchmark does I<not> measure scalability of the event loop very
917well. For example, a select-based event loop (such as the pure perl one) 918well. For example, a select-based event loop (such as the pure perl one)

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