… | |
… | |
790 | =item $cb = $cv->cb ($cb->($cv)) |
790 | =item $cb = $cv->cb ($cb->($cv)) |
791 | |
791 | |
792 | This is a mutator function that returns the callback set and optionally |
792 | This is a mutator function that returns the callback set and optionally |
793 | replaces it before doing so. |
793 | replaces it before doing so. |
794 | |
794 | |
795 | The callback will be called when the condition becomes "true", i.e. when |
795 | The callback will be called when the condition becomes (or already was) |
796 | C<send> or C<croak> are called, with the only argument being the condition |
796 | "true", i.e. when C<send> or C<croak> are called (or were called), with |
797 | variable itself. Calling C<recv> inside the callback or at any later time |
797 | the only argument being the condition variable itself. Calling C<recv> |
798 | is guaranteed not to block. |
798 | inside the callback or at any later time is guaranteed not to block. |
799 | |
799 | |
800 | =back |
800 | =back |
801 | |
801 | |
802 | =head1 SUPPORTED EVENT LOOPS/BACKENDS |
802 | =head1 SUPPORTED EVENT LOOPS/BACKENDS |
803 | |
803 | |
… | |
… | |
806 | =over 4 |
806 | =over 4 |
807 | |
807 | |
808 | =item Backends that are autoprobed when no other event loop can be found. |
808 | =item Backends that are autoprobed when no other event loop can be found. |
809 | |
809 | |
810 | EV is the preferred backend when no other event loop seems to be in |
810 | EV is the preferred backend when no other event loop seems to be in |
811 | use. If EV is not installed, then AnyEvent will try Event, and, failing |
811 | use. If EV is not installed, then AnyEvent will fall back to its own |
812 | that, will fall back to its own pure-perl implementation, which is |
812 | pure-perl implementation, which is available everywhere as it comes with |
813 | available everywhere as it comes with AnyEvent itself. |
813 | AnyEvent itself. |
814 | |
814 | |
815 | AnyEvent::Impl::EV based on EV (interface to libev, best choice). |
815 | AnyEvent::Impl::EV based on EV (interface to libev, best choice). |
816 | AnyEvent::Impl::Event based on Event, very stable, few glitches. |
|
|
817 | AnyEvent::Impl::Perl pure-perl implementation, fast and portable. |
816 | AnyEvent::Impl::Perl pure-perl implementation, fast and portable. |
818 | |
817 | |
819 | =item Backends that are transparently being picked up when they are used. |
818 | =item Backends that are transparently being picked up when they are used. |
820 | |
819 | |
821 | These will be used when they are currently loaded when the first watcher |
820 | These will be used when they are currently loaded when the first watcher |
822 | is created, in which case it is assumed that the application is using |
821 | is created, in which case it is assumed that the application is using |
823 | them. This means that AnyEvent will automatically pick the right backend |
822 | them. This means that AnyEvent will automatically pick the right backend |
824 | when the main program loads an event module before anything starts to |
823 | when the main program loads an event module before anything starts to |
825 | create watchers. Nothing special needs to be done by the main program. |
824 | create watchers. Nothing special needs to be done by the main program. |
826 | |
825 | |
|
|
826 | AnyEvent::Impl::Event based on Event, very stable, few glitches. |
827 | AnyEvent::Impl::Glib based on Glib, slow but very stable. |
827 | AnyEvent::Impl::Glib based on Glib, slow but very stable. |
828 | AnyEvent::Impl::Tk based on Tk, very broken. |
828 | AnyEvent::Impl::Tk based on Tk, very broken. |
829 | AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse. |
829 | AnyEvent::Impl::EventLib based on Event::Lib, leaks memory and worse. |
830 | AnyEvent::Impl::POE based on POE, very slow, some limitations. |
830 | AnyEvent::Impl::POE based on POE, very slow, some limitations. |
831 | AnyEvent::Impl::Irssi used when running within irssi. |
831 | AnyEvent::Impl::Irssi used when running within irssi. |
… | |
… | |
1115 | |
1115 | |
1116 | BEGIN { AnyEvent::common_sense } |
1116 | BEGIN { AnyEvent::common_sense } |
1117 | |
1117 | |
1118 | use Carp (); |
1118 | use Carp (); |
1119 | |
1119 | |
1120 | our $VERSION = 4.881; |
1120 | our $VERSION = '5.0'; |
1121 | our $MODEL; |
1121 | our $MODEL; |
1122 | |
1122 | |
1123 | our $AUTOLOAD; |
1123 | our $AUTOLOAD; |
1124 | our @ISA; |
1124 | our @ISA; |
1125 | |
1125 | |
… | |
… | |
1151 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
1151 | $ENV{PERL_ANYEVENT_PROTOCOLS} || "ipv4,ipv6"; |
1152 | } |
1152 | } |
1153 | |
1153 | |
1154 | my @models = ( |
1154 | my @models = ( |
1155 | [EV:: => AnyEvent::Impl::EV:: , 1], |
1155 | [EV:: => AnyEvent::Impl::EV:: , 1], |
1156 | [Event:: => AnyEvent::Impl::Event::, 1], |
|
|
1157 | [AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1], |
1156 | [AnyEvent::Impl::Perl:: => AnyEvent::Impl::Perl:: , 1], |
1158 | # everything below here will not (normally) be autoprobed |
1157 | # everything below here will not (normally) be autoprobed |
1159 | # as the pureperl backend should work everywhere |
1158 | # as the pureperl backend should work everywhere |
1160 | # and is usually faster |
1159 | # and is usually faster |
|
|
1160 | [Event:: => AnyEvent::Impl::Event::, 1], |
1161 | [Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers |
1161 | [Glib:: => AnyEvent::Impl::Glib:: , 1], # becomes extremely slow with many watchers |
1162 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
1162 | [Event::Lib:: => AnyEvent::Impl::EventLib::], # too buggy |
1163 | [Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package |
1163 | [Irssi:: => AnyEvent::Impl::Irssi::], # Irssi has a bogus "Event" package |
1164 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1164 | [Tk:: => AnyEvent::Impl::Tk::], # crashes with many handles |
1165 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
1165 | [Qt:: => AnyEvent::Impl::Qt::], # requires special main program |
… | |
… | |
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 | |
|
|
1293 | =head1 SIMPLIFIED AE API |
|
|
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 |
|
|
1302 | |
|
|
1303 | package AE; |
|
|
1304 | |
|
|
1305 | our $VERSION = $AnyEvent::VERSION; |
|
|
1306 | |
|
|
1307 | sub io($$$) { |
|
|
1308 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
|
|
1309 | } |
|
|
1310 | |
|
|
1311 | sub timer($$$) { |
|
|
1312 | AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]) |
|
|
1313 | } |
|
|
1314 | |
|
|
1315 | sub signal($$) { |
|
|
1316 | AnyEvent->signal (signal => $_[0], cb => $_[1]) |
|
|
1317 | } |
|
|
1318 | |
|
|
1319 | sub child($$) { |
|
|
1320 | AnyEvent->child (pid => $_[0], cb => $_[1]) |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | sub idle($) { |
|
|
1324 | AnyEvent->idle (cb => $_[0]) |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | sub cv(;&) { |
|
|
1328 | AnyEvent->condvar (@_ ? (cb => $_[0]) : ()) |
|
|
1329 | } |
|
|
1330 | |
|
|
1331 | sub now() { |
|
|
1332 | AnyEvent->now |
|
|
1333 | } |
|
|
1334 | |
|
|
1335 | sub now_update() { |
|
|
1336 | AnyEvent->now_update |
|
|
1337 | } |
|
|
1338 | |
|
|
1339 | sub time() { |
|
|
1340 | AnyEvent->time |
|
|
1341 | } |
|
|
1342 | |
1292 | package AnyEvent::Base; |
1343 | package AnyEvent::Base; |
1293 | |
1344 | |
1294 | # default implementations for many methods |
1345 | # default implementations for many methods |
1295 | |
1346 | |
1296 | sub _time { |
1347 | sub _time { |
… | |
… | |
1348 | |
1399 | |
1349 | # install a dummy wakeup watcher to reduce signal catching latency |
1400 | # install a dummy wakeup watcher to reduce signal catching latency |
1350 | sub _sig_add() { |
1401 | sub _sig_add() { |
1351 | unless ($SIG_COUNT++) { |
1402 | unless ($SIG_COUNT++) { |
1352 | # try to align timer on a full-second boundary, if possible |
1403 | # try to align timer on a full-second boundary, if possible |
1353 | my $NOW = AnyEvent->now; |
1404 | my $NOW = AE::now; |
1354 | |
1405 | |
1355 | $SIG_TW = AnyEvent->timer ( |
1406 | $SIG_TW = AE::timer |
1356 | after => $MAX_SIGNAL_LATENCY - ($NOW - int $NOW), |
1407 | $MAX_SIGNAL_LATENCY - ($NOW - int $NOW), |
1357 | interval => $MAX_SIGNAL_LATENCY, |
1408 | $MAX_SIGNAL_LATENCY, |
1358 | cb => sub { }, # just for the PERL_ASYNC_CHECK |
1409 | sub { } # just for the PERL_ASYNC_CHECK |
1359 | ); |
1410 | ; |
1360 | } |
1411 | } |
1361 | } |
1412 | } |
1362 | |
1413 | |
1363 | sub _sig_del { |
1414 | sub _sig_del { |
1364 | undef $SIG_TW |
1415 | undef $SIG_TW |
… | |
… | |
1401 | # probe for availability of Async::Interrupt |
1452 | # probe for availability of Async::Interrupt |
1402 | if (_have_async_interrupt) { |
1453 | if (_have_async_interrupt) { |
1403 | warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; |
1454 | warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; |
1404 | |
1455 | |
1405 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1456 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1406 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec); |
1457 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1407 | |
1458 | |
1408 | } else { |
1459 | } else { |
1409 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
1460 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
1410 | |
1461 | |
1411 | require Fcntl; |
1462 | require Fcntl; |
… | |
… | |
1427 | } |
1478 | } |
1428 | |
1479 | |
1429 | $SIGPIPE_R |
1480 | $SIGPIPE_R |
1430 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
1481 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
1431 | |
1482 | |
1432 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec); |
1483 | $SIG_IO = AE::io $SIGPIPE_R, 0, \&_signal_exec; |
1433 | } |
1484 | } |
1434 | |
1485 | |
1435 | *signal = sub { |
1486 | *signal = sub { |
1436 | my (undef, %arg) = @_; |
1487 | my (undef, %arg) = @_; |
1437 | |
1488 | |
… | |
… | |
1526 | $WNOHANG ||= $^O =~ /^(?:openbsd|netbsd|linux|freebsd|cygwin|MSWin32)$/ |
1577 | $WNOHANG ||= $^O =~ /^(?:openbsd|netbsd|linux|freebsd|cygwin|MSWin32)$/ |
1527 | ? 1 |
1578 | ? 1 |
1528 | : eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } || 1; |
1579 | : eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } || 1; |
1529 | |
1580 | |
1530 | unless ($CHLD_W) { |
1581 | unless ($CHLD_W) { |
1531 | $CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_sigchld); |
1582 | $CHLD_W = AE::signal CHLD => \&_sigchld; |
1532 | # child could be a zombie already, so make at least one round |
1583 | # child could be a zombie already, so make at least one round |
1533 | &_sigchld; |
1584 | &_sigchld; |
1534 | } |
1585 | } |
1535 | |
1586 | |
1536 | bless [$pid, $arg{cb}], "AnyEvent::Base::child" |
1587 | bless [$pid, $arg{cb}], "AnyEvent::Base::child" |
… | |
… | |
1562 | # never use more then 50% of the time for the idle watcher, |
1613 | # never use more then 50% of the time for the idle watcher, |
1563 | # within some limits |
1614 | # within some limits |
1564 | $w = 0.0001 if $w < 0.0001; |
1615 | $w = 0.0001 if $w < 0.0001; |
1565 | $w = 5 if $w > 5; |
1616 | $w = 5 if $w > 5; |
1566 | |
1617 | |
1567 | $w = AnyEvent->timer (after => $w, cb => $rcb); |
1618 | $w = AE::timer $w, 0, $rcb; |
1568 | } else { |
1619 | } else { |
1569 | # clean up... |
1620 | # clean up... |
1570 | undef $w; |
1621 | undef $w; |
1571 | undef $rcb; |
1622 | undef $rcb; |
1572 | } |
1623 | } |
1573 | }; |
1624 | }; |
1574 | |
1625 | |
1575 | $w = AnyEvent->timer (after => 0.05, cb => $rcb); |
1626 | $w = AE::timer 0.05, 0, $rcb; |
1576 | |
1627 | |
1577 | bless \\$cb, "AnyEvent::Base::idle" |
1628 | bless \\$cb, "AnyEvent::Base::idle" |
1578 | } |
1629 | } |
1579 | |
1630 | |
1580 | sub AnyEvent::Base::idle::DESTROY { |
1631 | sub AnyEvent::Base::idle::DESTROY { |
… | |
… | |
1634 | Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak}; |
1685 | Carp::croak $_[0]{_ae_croak} if $_[0]{_ae_croak}; |
1635 | wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0] |
1686 | wantarray ? @{ $_[0]{_ae_sent} } : $_[0]{_ae_sent}[0] |
1636 | } |
1687 | } |
1637 | |
1688 | |
1638 | sub cb { |
1689 | sub cb { |
1639 | $_[0]{_ae_cb} = $_[1] if @_ > 1; |
1690 | my $cv = shift; |
|
|
1691 | |
|
|
1692 | @_ |
|
|
1693 | and $cv->{_ae_cb} = shift |
|
|
1694 | and $cv->{_ae_sent} |
|
|
1695 | and (delete $cv->{_ae_cb})->($cv); |
|
|
1696 | |
1640 | $_[0]{_ae_cb} |
1697 | $cv->{_ae_cb} |
1641 | } |
1698 | } |
1642 | |
1699 | |
1643 | sub begin { |
1700 | sub begin { |
1644 | ++$_[0]{_ae_counter}; |
1701 | ++$_[0]{_ae_counter}; |
1645 | $_[0]{_ae_end_cb} = $_[1] if @_ > 1; |
1702 | $_[0]{_ae_end_cb} = $_[1] if @_ > 1; |
… | |
… | |
1651 | } |
1708 | } |
1652 | |
1709 | |
1653 | # undocumented/compatibility with pre-3.4 |
1710 | # undocumented/compatibility with pre-3.4 |
1654 | *broadcast = \&send; |
1711 | *broadcast = \&send; |
1655 | *wait = \&_wait; |
1712 | *wait = \&_wait; |
1656 | |
|
|
1657 | ############################################################################# |
|
|
1658 | # "new" API, currently only emulation of it |
|
|
1659 | ############################################################################# |
|
|
1660 | |
|
|
1661 | package AE; |
|
|
1662 | |
|
|
1663 | sub io($$$) { |
|
|
1664 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
|
|
1665 | } |
|
|
1666 | |
|
|
1667 | sub timer($$$) { |
|
|
1668 | AnyEvent->timer (after => $_[0], interval => $_[1], cb => $_[2]); |
|
|
1669 | } |
|
|
1670 | |
|
|
1671 | sub signal($$) { |
|
|
1672 | AnyEvent->signal (signal => $_[0], cb => $_[1]); |
|
|
1673 | } |
|
|
1674 | |
|
|
1675 | sub child($$) { |
|
|
1676 | AnyEvent->child (pid => $_[0], cb => $_[1]); |
|
|
1677 | } |
|
|
1678 | |
|
|
1679 | sub idle($) { |
|
|
1680 | AnyEvent->idle (cb => $_[0]); |
|
|
1681 | } |
|
|
1682 | |
|
|
1683 | sub cv() { |
|
|
1684 | AnyEvent->condvar |
|
|
1685 | } |
|
|
1686 | |
|
|
1687 | sub now() { |
|
|
1688 | AnyEvent->now |
|
|
1689 | } |
|
|
1690 | |
|
|
1691 | sub now_update() { |
|
|
1692 | AnyEvent->now_update |
|
|
1693 | } |
|
|
1694 | |
|
|
1695 | sub time() { |
|
|
1696 | AnyEvent->time |
|
|
1697 | } |
|
|
1698 | |
1713 | |
1699 | =head1 ERROR AND EXCEPTION HANDLING |
1714 | =head1 ERROR AND EXCEPTION HANDLING |
1700 | |
1715 | |
1701 | In general, AnyEvent does not do any error handling - it relies on the |
1716 | In general, AnyEvent does not do any error handling - it relies on the |
1702 | caller to do that if required. The L<AnyEvent::Strict> module (see also |
1717 | caller to do that if required. The L<AnyEvent::Strict> module (see also |
… | |
… | |
2046 | 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 |
2047 | 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, |
2048 | 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. |
2049 | |
2064 | |
2050 | 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 |
2051 | distribution. |
2066 | distribution. It uses the L<AE> interface, which makes a real difference |
|
|
2067 | for the EV and Perl backends only. |
2052 | |
2068 | |
2053 | =head3 Explanation of the columns |
2069 | =head3 Explanation of the columns |
2054 | |
2070 | |
2055 | I<watcher> is the number of event watchers created/destroyed. Since |
2071 | I<watcher> is the number of event watchers created/destroyed. Since |
2056 | different event models feature vastly different performances, each event |
2072 | different event models feature vastly different performances, each event |
… | |
… | |
2077 | watcher. |
2093 | watcher. |
2078 | |
2094 | |
2079 | =head3 Results |
2095 | =head3 Results |
2080 | |
2096 | |
2081 | name watchers bytes create invoke destroy comment |
2097 | name watchers bytes create invoke destroy comment |
2082 | 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 |
2083 | 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 |
2084 | 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 |
2085 | 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 |
2086 | 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 |
2087 | 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 |
2088 | 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 |
2089 | 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 |
2090 | 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 |
2091 | 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 |
2092 | 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 |
2093 | 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 |
2094 | |
2110 | |
2095 | =head3 Discussion |
2111 | =head3 Discussion |
2096 | |
2112 | |
2097 | 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 |
2098 | 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) |
… | |
… | |
2110 | benchmark machine, handling an event takes roughly 1600 CPU cycles with |
2126 | benchmark machine, handling an event takes roughly 1600 CPU cycles with |
2111 | 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 |
2112 | cycles with POE. |
2128 | cycles with POE. |
2113 | |
2129 | |
2114 | 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 |
2115 | 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 |
2116 | 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). |
2117 | natively. |
|
|
2118 | |
2135 | |
2119 | 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 |
2120 | 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 |
2121 | interpreter and the backend itself). Nevertheless this shows that it |
2138 | interpreter and the backend itself). Nevertheless this shows that it |
2122 | 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 |
… | |
… | |
2196 | 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 |
2197 | (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 |
2198 | 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. |
2199 | |
2216 | |
2200 | 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 |
2201 | distribution. |
2218 | distribution. It uses the L<AE> interface, which makes a real difference |
|
|
2219 | for the EV and Perl backends only. |
2202 | |
2220 | |
2203 | =head3 Explanation of the columns |
2221 | =head3 Explanation of the columns |
2204 | |
2222 | |
2205 | 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 |
2206 | each server has a read and write socket end). |
2224 | each server has a read and write socket end). |
… | |
… | |
2214 | a new one that moves the timeout into the future. |
2232 | a new one that moves the timeout into the future. |
2215 | |
2233 | |
2216 | =head3 Results |
2234 | =head3 Results |
2217 | |
2235 | |
2218 | name sockets create request |
2236 | name sockets create request |
2219 | EV 20000 69.01 11.16 |
2237 | EV 20000 62.66 7.99 |
2220 | Perl 20000 73.32 35.87 |
2238 | Perl 20000 68.32 32.64 |
2221 | IOAsync 20000 157.00 98.14 epoll |
2239 | IOAsync 20000 174.06 101.15 epoll |
2222 | IOAsync 20000 159.31 616.06 poll |
2240 | IOAsync 20000 174.67 610.84 poll |
2223 | Event 20000 212.62 257.32 |
2241 | Event 20000 202.69 242.91 |
2224 | Glib 20000 651.16 1896.30 |
2242 | Glib 20000 557.01 1689.52 |
2225 | POE 20000 349.67 12317.24 uses POE::Loop::Event |
2243 | POE 20000 341.54 12086.32 uses POE::Loop::Event |
2226 | |
2244 | |
2227 | =head3 Discussion |
2245 | =head3 Discussion |
2228 | |
2246 | |
2229 | This benchmark I<does> measure scalability and overall performance of the |
2247 | This benchmark I<does> measure scalability and overall performance of the |
2230 | particular event loop. |
2248 | particular event loop. |