… | |
… | |
864 | |
864 | |
865 | |
865 | |
866 | =head1 BENCHMARK |
866 | =head1 BENCHMARK |
867 | |
867 | |
868 | To give you an idea of the performance and overheads that AnyEvent adds |
868 | To give you an idea of the performance and overheads that AnyEvent adds |
|
|
869 | over the event loops themselves (and to give you an impression of the |
869 | over the event loops directly, here is a benchmark of various supported |
870 | speed of various event loops), here is a benchmark of various supported |
870 | event models natively and with anyevent. The benchmark creates a lot of |
871 | event models natively and with anyevent. The benchmark creates a lot of |
871 | timers (with a zero timeout) and io watchers (watching STDOUT, a pty, to |
872 | timers (with a zero timeout) and io watchers (watching STDOUT, a pty, to |
872 | become writable, which it is), lets them fire exactly once and destroys |
873 | become writable, which it is), lets them fire exactly once and destroys |
873 | them again. |
874 | them again. |
874 | |
875 | |
… | |
… | |
893 | I<invoke> is the time, in microseconds, used to invoke a simple |
894 | I<invoke> is the time, in microseconds, used to invoke a simple |
894 | callback. The callback simply counts down a Perl variable and after it was |
895 | callback. The callback simply counts down a Perl variable and after it was |
895 | invoked "watcher" times, it would C<< ->broadcast >> a condvar once to |
896 | invoked "watcher" times, it would C<< ->broadcast >> a condvar once to |
896 | signal the end of this phase. |
897 | signal the end of this phase. |
897 | |
898 | |
898 | I<destroy> is the time, in microseconds, that it takes destroy a single |
899 | I<destroy> is the time, in microseconds, that it takes to destroy a single |
899 | watcher. |
900 | watcher. |
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 | |
917 | The benchmark does I<not> measure scalability of the event loop very |
918 | The benchmark does I<not> measure scalability of the event loop very |
918 | well. For example, a select-based event loop (such as the pure perl one) |
919 | well. For example, a select-based event loop (such as the pure perl one) |