… | |
… | |
1168 | [Prima:: => AnyEvent::Impl::POE::], |
1168 | [Prima:: => AnyEvent::Impl::POE::], |
1169 | # IO::Async is just too broken - we would need workarounds for its |
1169 | # IO::Async is just too broken - we would need workarounds for its |
1170 | # byzantine signal and broken child handling, among others. |
1170 | # byzantine signal and broken child handling, among others. |
1171 | # IO::Async is rather hard to detect, as it doesn't have any |
1171 | # IO::Async is rather hard to detect, as it doesn't have any |
1172 | # obvious default class. |
1172 | # obvious default class. |
1173 | # [0, IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1173 | [IO::Async:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1174 | # [0, IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1174 | [IO::Async::Loop:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1175 | # [0, IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1175 | [IO::Async::Notifier:: => AnyEvent::Impl::IOAsync::], # requires special main program |
|
|
1176 | [AnyEvent::Impl::IOAsync:: => AnyEvent::Impl::IOAsync::], # requires special main program |
1176 | ); |
1177 | ); |
1177 | |
1178 | |
1178 | our %method = map +($_ => 1), |
1179 | our %method = map +($_ => 1), |
1179 | qw(io timer time now now_update signal child idle condvar one_event DESTROY); |
1180 | qw(io timer time now now_update signal child idle condvar one_event DESTROY); |
1180 | |
1181 | |
… | |
… | |
1287 | # we assume CLOEXEC is already set by perl in all important cases |
1288 | # we assume CLOEXEC is already set by perl in all important cases |
1288 | |
1289 | |
1289 | ($fh2, $rw) |
1290 | ($fh2, $rw) |
1290 | } |
1291 | } |
1291 | |
1292 | |
1292 | ############################################################################# |
1293 | =head1 SIMPLIFIED AE API |
1293 | # "new" API, currently only emulation of it |
1294 | |
1294 | ############################################################################# |
1295 | Starting with version 5.0, AnyEvent officially supports a second, much |
|
|
1296 | simpler, API that is designed to reduce the calling, typing and memory |
|
|
1297 | overhead. |
|
|
1298 | |
|
|
1299 | See the L<AE> manpage for details. |
|
|
1300 | |
|
|
1301 | =cut |
1295 | |
1302 | |
1296 | package AE; |
1303 | package AE; |
1297 | |
1304 | |
1298 | our $VERSION = $AnyEvent::VERSION; |
1305 | our $VERSION = $AnyEvent::VERSION; |
1299 | |
1306 | |
1300 | sub io($$$) { |
1307 | sub io($$$) { |
1301 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
1308 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
1302 | } |
1309 | } |
1303 | |
1310 | |
1304 | sub timer($$$) { |
1311 | sub timer($$$) { |
1305 | AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]); |
1312 | AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) |
1306 | } |
1313 | } |
1307 | |
1314 | |
1308 | sub signal($$) { |
1315 | sub signal($$) { |
1309 | AnyEvent->signal (signal => $_[0], cb => $_[1]); |
1316 | AnyEvent->signal (signal => $_[0], cb => $_[1]) |
1310 | } |
1317 | } |
1311 | |
1318 | |
1312 | sub child($$) { |
1319 | sub child($$) { |
1313 | AnyEvent->child (pid => $_[0], cb => $_[1]); |
1320 | AnyEvent->child (pid => $_[0], cb => $_[1]) |
1314 | } |
1321 | } |
1315 | |
1322 | |
1316 | sub idle($) { |
1323 | sub idle($) { |
1317 | AnyEvent->idle (cb => $_[0]); |
1324 | AnyEvent->idle (cb => $_[0]) |
1318 | } |
1325 | } |
1319 | |
1326 | |
1320 | sub cv(;&) { |
1327 | sub cv(;&) { |
1321 | AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) |
1328 | AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) |
1322 | } |
1329 | } |
… | |
… | |
2054 | through AnyEvent. The benchmark creates a lot of timers (with a zero |
2061 | through AnyEvent. The benchmark creates a lot of timers (with a zero |
2055 | timeout) and I/O watchers (watching STDOUT, a pty, to become writable, |
2062 | timeout) and I/O watchers (watching STDOUT, a pty, to become writable, |
2056 | which it is), lets them fire exactly once and destroys them again. |
2063 | which it is), lets them fire exactly once and destroys them again. |
2057 | |
2064 | |
2058 | Source code for this benchmark is found as F<eg/bench> in the AnyEvent |
2065 | Source code for this benchmark is found as F<eg/bench> in the AnyEvent |
2059 | distribution. |
2066 | distribution. It uses the L<AE> interface, which makes a real difference |
|
|
2067 | for the EV and Perl backends only. |
2060 | |
2068 | |
2061 | =head3 Explanation of the columns |
2069 | =head3 Explanation of the columns |
2062 | |
2070 | |
2063 | I<watcher> is the number of event watchers created/destroyed. Since |
2071 | I<watcher> is the number of event watchers created/destroyed. Since |
2064 | different event models feature vastly different performances, each event |
2072 | different event models feature vastly different performances, each event |
… | |
… | |
2085 | watcher. |
2093 | watcher. |
2086 | |
2094 | |
2087 | =head3 Results |
2095 | =head3 Results |
2088 | |
2096 | |
2089 | name watchers bytes create invoke destroy comment |
2097 | name watchers bytes create invoke destroy comment |
2090 | EV/EV 400000 224 0.47 0.35 0.27 EV native interface |
2098 | EV/EV 100000 223 0.47 0.43 0.27 EV native interface |
2091 | EV/Any 100000 224 2.88 0.34 0.27 EV + AnyEvent watchers |
2099 | EV/Any 100000 223 0.48 0.42 0.26 EV + AnyEvent watchers |
2092 | CoroEV/Any 100000 224 2.85 0.35 0.28 coroutines + Coro::Signal |
2100 | Coro::EV/Any 100000 223 0.47 0.42 0.26 coroutines + Coro::Signal |
2093 | Perl/Any 100000 452 4.13 0.73 0.95 pure perl implementation |
2101 | Perl/Any 100000 431 2.70 0.74 0.92 pure perl implementation |
2094 | Event/Event 16000 517 32.20 31.80 0.81 Event native interface |
2102 | Event/Event 16000 516 31.16 31.84 0.82 Event native interface |
2095 | Event/Any 16000 590 35.85 31.55 1.06 Event + AnyEvent watchers |
2103 | Event/Any 16000 1203 42.61 34.79 1.80 Event + AnyEvent watchers |
2096 | IOAsync/Any 16000 989 38.10 32.77 11.13 via IO::Async::Loop::IO_Poll |
2104 | IOAsync/Any 16000 1911 41.92 27.45 16.81 via IO::Async::Loop::IO_Poll |
2097 | IOAsync/Any 16000 990 37.59 29.50 10.61 via IO::Async::Loop::Epoll |
2105 | IOAsync/Any 16000 1726 40.69 26.37 15.25 via IO::Async::Loop::Epoll |
2098 | Glib/Any 16000 1357 102.33 12.31 51.00 quadratic behaviour |
2106 | Glib/Any 16000 1118 89.00 12.57 51.17 quadratic behaviour |
2099 | Tk/Any 2000 1860 27.20 66.31 14.00 SEGV with >> 2000 watchers |
2107 | Tk/Any 2000 1346 20.96 10.75 8.00 SEGV with >> 2000 watchers |
2100 | POE/Event 2000 6328 109.99 751.67 14.02 via POE::Loop::Event |
2108 | POE/Any 2000 6951 108.97 795.32 14.24 via POE::Loop::Event |
2101 | POE/Select 2000 6027 94.54 809.13 579.80 via POE::Loop::Select |
2109 | POE/Any 2000 6648 94.79 774.40 575.51 via POE::Loop::Select |
2102 | |
2110 | |
2103 | =head3 Discussion |
2111 | =head3 Discussion |
2104 | |
2112 | |
2105 | The benchmark does I<not> measure scalability of the event loop very |
2113 | The benchmark does I<not> measure scalability of the event loop very |
2106 | well. For example, a select-based event loop (such as the pure perl one) |
2114 | well. For example, a select-based event loop (such as the pure perl one) |
… | |
… | |
2118 | benchmark machine, handling an event takes roughly 1600 CPU cycles with |
2126 | benchmark machine, handling an event takes roughly 1600 CPU cycles with |
2119 | EV, 3100 CPU cycles with AnyEvent's pure perl loop and almost 3000000 CPU |
2127 | EV, 3100 CPU cycles with AnyEvent's pure perl loop and almost 3000000 CPU |
2120 | cycles with POE. |
2128 | cycles with POE. |
2121 | |
2129 | |
2122 | C<EV> is the sole leader regarding speed and memory use, which are both |
2130 | C<EV> is the sole leader regarding speed and memory use, which are both |
2123 | maximal/minimal, respectively. Even when going through AnyEvent, it uses |
2131 | maximal/minimal, respectively. When using the L<AE> API there is zero |
|
|
2132 | overhead (when going through the AnyEvent API create is about 5-6 times |
|
|
2133 | slower, with other times being equal, so still uses far less memory than |
2124 | far less memory than any other event loop and is still faster than Event |
2134 | any other event loop and is still faster than Event natively). |
2125 | natively. |
|
|
2126 | |
2135 | |
2127 | The pure perl implementation is hit in a few sweet spots (both the |
2136 | The pure perl implementation is hit in a few sweet spots (both the |
2128 | constant timeout and the use of a single fd hit optimisations in the perl |
2137 | constant timeout and the use of a single fd hit optimisations in the perl |
2129 | interpreter and the backend itself). Nevertheless this shows that it |
2138 | interpreter and the backend itself). Nevertheless this shows that it |
2130 | adds very little overhead in itself. Like any select-based backend its |
2139 | adds very little overhead in itself. Like any select-based backend its |
… | |
… | |
2204 | In this benchmark, we use 10000 socket pairs (20000 sockets), of which 100 |
2213 | In this benchmark, we use 10000 socket pairs (20000 sockets), of which 100 |
2205 | (1%) are active. This mirrors the activity of large servers with many |
2214 | (1%) are active. This mirrors the activity of large servers with many |
2206 | connections, most of which are idle at any one point in time. |
2215 | connections, most of which are idle at any one point in time. |
2207 | |
2216 | |
2208 | Source code for this benchmark is found as F<eg/bench2> in the AnyEvent |
2217 | Source code for this benchmark is found as F<eg/bench2> in the AnyEvent |
2209 | distribution. |
2218 | distribution. It uses the L<AE> interface, which makes a real difference |
|
|
2219 | for the EV and Perl backends only. |
2210 | |
2220 | |
2211 | =head3 Explanation of the columns |
2221 | =head3 Explanation of the columns |
2212 | |
2222 | |
2213 | I<sockets> is the number of sockets, and twice the number of "servers" (as |
2223 | I<sockets> is the number of sockets, and twice the number of "servers" (as |
2214 | each server has a read and write socket end). |
2224 | each server has a read and write socket end). |
… | |
… | |
2222 | a new one that moves the timeout into the future. |
2232 | a new one that moves the timeout into the future. |
2223 | |
2233 | |
2224 | =head3 Results |
2234 | =head3 Results |
2225 | |
2235 | |
2226 | name sockets create request |
2236 | name sockets create request |
2227 | EV 20000 69.01 11.16 |
2237 | EV 20000 62.66 7.99 |
2228 | Perl 20000 73.32 35.87 |
2238 | Perl 20000 68.32 32.64 |
2229 | IOAsync 20000 157.00 98.14 epoll |
2239 | IOAsync 20000 174.06 101.15 epoll |
2230 | IOAsync 20000 159.31 616.06 poll |
2240 | IOAsync 20000 174.67 610.84 poll |
2231 | Event 20000 212.62 257.32 |
2241 | Event 20000 202.69 242.91 |
2232 | Glib 20000 651.16 1896.30 |
2242 | Glib 20000 557.01 1689.52 |
2233 | POE 20000 349.67 12317.24 uses POE::Loop::Event |
2243 | POE 20000 341.54 12086.32 uses POE::Loop::Event |
2234 | |
2244 | |
2235 | =head3 Discussion |
2245 | =head3 Discussion |
2236 | |
2246 | |
2237 | This benchmark I<does> measure scalability and overall performance of the |
2247 | This benchmark I<does> measure scalability and overall performance of the |
2238 | particular event loop. |
2248 | particular event loop. |