Mercurial > hg > nginx
view auto/os/darwin @ 6153:4f6efabcb09b
The "reuseport" option of the "listen" directive.
When configured, an individual listen socket on a given address is
created for each worker process. This allows to reduce in-kernel lock
contention on configurations with high accept rates, resulting in better
performance. As of now it works on Linux and DragonFly BSD.
Note that on Linux incoming connection requests are currently tied up
to a specific listen socket, and if some sockets are closed, connection
requests will be reset, see https://lwn.net/Articles/542629/. With
nginx, this may happen if the number of worker processes is reduced.
There is no such problem on DragonFly BSD.
Based on previous work by Sepherosa Ziehau and Yingqi Lu.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 20 May 2015 15:51:56 +0300 |
parents | 79b473d5381d |
children | 85dea406e18f |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. have=NGX_DARWIN . auto/have_headers CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $DARWIN_DEPS" CORE_SRCS="$UNIX_SRCS $DARWIN_SRCS" ngx_spacer=' ' # kqueue echo " + kqueue found" have=NGX_HAVE_KQUEUE . auto/have have=NGX_HAVE_CLEAR_EVENT . auto/have EVENT_MODULES="$EVENT_MODULES $KQUEUE_MODULE" CORE_SRCS="$CORE_SRCS $KQUEUE_SRCS" EVENT_FOUND=YES NGX_KQUEUE_CHECKED=YES ngx_feature="kqueue's EVFILT_TIMER" ngx_feature_name="NGX_HAVE_TIMER_EVENT" ngx_feature_run=yes ngx_feature_incs="#include <sys/event.h> #include <sys/time.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int kq; struct kevent kev; struct timespec ts; if ((kq = kqueue()) == -1) return 1; kev.ident = 0; kev.filter = EVFILT_TIMER; kev.flags = EV_ADD|EV_ENABLE; kev.fflags = 0; kev.data = 1000; kev.udata = 0; ts.tv_sec = 0; ts.tv_nsec = 0; if (kevent(kq, &kev, 1, &kev, 1, &ts) == -1) return 1; if (kev.flags & EV_ERROR) return 1;" . auto/feature ngx_feature="Darwin 64-bit kqueue millisecond timeout bug" ngx_feature_name=NGX_DARWIN_KEVENT_BUG ngx_feature_run=bug ngx_feature_incs="#include <sys/event.h> #include <sys/time.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int kq; struct kevent kev; struct timespec ts; struct timeval tv, tv0; kq = kqueue(); ts.tv_sec = 0; ts.tv_nsec = 999000000; gettimeofday(&tv, 0); kevent(kq, NULL, 0, &kev, 1, &ts); gettimeofday(&tv0, 0); timersub(&tv0, &tv, &tv); if (tv.tv_sec * 1000000 + tv.tv_usec < 900000) return 1;" . auto/feature # sendfile() CC_AUX_FLAGS="$CC_AUX_FLAGS" ngx_feature="sendfile()" ngx_feature_name="NGX_HAVE_SENDFILE" ngx_feature_run=yes ngx_feature_incs="#include <sys/types.h> #include <sys/socket.h> #include <sys/uio.h> #include <sys/errno.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int s = 0, fd = 1; off_t n; off_t off = 0; n = sendfile(s, fd, off, &n, NULL, 0); if (n == -1 && errno == ENOSYS) return 1" . auto/feature if [ $ngx_found = yes ]; then CORE_SRCS="$CORE_SRCS $DARWIN_SENDFILE_SRCS" fi ngx_feature="atomic(3)" ngx_feature_name=NGX_DARWIN_ATOMIC ngx_feature_run=no ngx_feature_incs="#include <libkern/OSAtomic.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int32_t lock, n; n = OSAtomicCompareAndSwap32Barrier(0, 1, &lock)" . auto/feature