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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.69 by root, Fri Apr 25 07:15:09 2008 UTC vs.
Revision 1.71 by root, Fri Apr 25 07:29:42 2008 UTC

… …
864 864
865 865
866=head1 BENCHMARK 866=head1 BENCHMARK
867 867
868To give you an idea of the performance and overheads that AnyEvent adds 868To give you an idea of the performance and overheads that AnyEvent adds
869over the event loops themselves (and to give you an impression of the
869over the event loops directly, here is a benchmark of various supported 870speed of various event loops), here is a benchmark of various supported
870event models natively and with anyevent. The benchmark creates a lot of 871event models natively and with anyevent. The benchmark creates a lot of
871timers (with a zero timeout) and io watchers (watching STDOUT, a pty, to 872timers (with a zero timeout) and io watchers (watching STDOUT, a pty, to
872become writable, which it is), lets them fire exactly once and destroys 873become writable, which it is), lets them fire exactly once and destroys
873them again. 874them again.
874 875
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893I<invoke> is the time, in microseconds, used to invoke a simple 894I<invoke> is the time, in microseconds, used to invoke a simple
894callback. The callback simply counts down a Perl variable and after it was 895callback. The callback simply counts down a Perl variable and after it was
895invoked "watcher" times, it would C<< ->broadcast >> a condvar once to 896invoked "watcher" times, it would C<< ->broadcast >> a condvar once to
896signal the end of this phase. 897signal the end of this phase.
897 898
898I<destroy> is the time, in microseconds, that it takes destroy a single 899I<destroy> is the time, in microseconds, that it takes to destroy a single
899watcher. 900watcher.
900 901
901=head2 Results 902=head2 Results
902 903
903 name watcher bytes create invoke destroy comment 904 name watcher bytes create invoke destroy comment
904 EV/EV 400000 244 0.56 0.46 0.31 EV native interface 905 EV/EV 400000 244 0.56 0.46 0.31 EV native interface
905 EV/Any 100000 610 3.52 0.91 0.75 906 EV/Any 100000 610 3.52 0.91 0.75 EV + AnyEvent watchers
906 CoroEV/Any 100000 610 3.49 0.92 0.75 coroutines + Coro::Signal 907 CoroEV/Any 100000 610 3.49 0.92 0.75 coroutines + Coro::Signal
907 Perl/Any 10000 654 4.64 1.22 0.77 pure perl implementation 908 Perl/Any 16000 654 4.64 1.22 0.77 pure perl implementation
908 Event/Event 10000 523 28.05 21.38 5.22 Event native interface 909 Event/Event 16000 523 28.05 21.38 0.86 Event native interface
909 Event/Any 10000 943 34.43 20.48 1.39 910 Event/Any 16000 943 34.43 20.48 1.39 Event + AnyEvent watchers
910 Glib/Any 16000 1357 96.99 12.55 55.51 quadratic behaviour 911 Glib/Any 16000 1357 96.99 12.55 55.51 quadratic behaviour
911 Tk/Any 2000 1855 27.01 66.61 14.03 SEGV with >> 2000 watchers 912 Tk/Any 2000 1855 27.01 66.61 14.03 SEGV with >> 2000 watchers
913 POE/Event 2000 6644 108.15 768.19 14.33 via POE::Loop::Event
912 POE/Select 2000 6343 94.69 807.65 562.69 POE::Loop::Select 914 POE/Select 2000 6343 94.69 807.65 562.69 via POE::Loop::Select
913 POE/Event 2000 6644 108.15 768.19 14.33 POE::Loop::Event
914 915
915=head2 Discussion 916=head2 Discussion
916 917
917The benchmark does I<not> measure scalability of the event loop very 918The benchmark does I<not> measure scalability of the event loop very
918well. For example, a select-based event loop (such as the pure perl one) 919well. For example, a select-based event loop (such as the pure perl one)

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