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Events: support for EPOLLEXCLUSIVE. This flag appeared in Linux 4.5 and is useful for avoiding thundering herd problem. The current Linux kernel implementation walks the list of exclusive waiters, and queues an event to each epfd, until it finds the first waiter that has threads blocked on it via epoll_wait().
author Valentin Bartenev <vbart@nginx.com>
date Fri, 15 Jul 2016 15:18:57 +0300
parents 787dcc15b802
children 0125b151c9a5
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equal deleted inserted replaced
6634:18f6120e3b7a 6635:6acaa638fa07
41 fi 41 fi
42 42
43 if [ $NGX_TEST_BUILD_EPOLL = YES ]; then 43 if [ $NGX_TEST_BUILD_EPOLL = YES ]; then
44 have=NGX_HAVE_EPOLL . auto/have 44 have=NGX_HAVE_EPOLL . auto/have
45 have=NGX_HAVE_EPOLLRDHUP . auto/have 45 have=NGX_HAVE_EPOLLRDHUP . auto/have
46 have=NGX_HAVE_EPOLLEXCLUSIVE . auto/have
46 have=NGX_HAVE_EVENTFD . auto/have 47 have=NGX_HAVE_EVENTFD . auto/have
47 have=NGX_TEST_BUILD_EPOLL . auto/have 48 have=NGX_TEST_BUILD_EPOLL . auto/have
48 EVENT_MODULES="$EVENT_MODULES $EPOLL_MODULE" 49 EVENT_MODULES="$EVENT_MODULES $EPOLL_MODULE"
49 CORE_SRCS="$CORE_SRCS $EPOLL_SRCS" 50 CORE_SRCS="$CORE_SRCS $EPOLL_SRCS"
50 fi 51 fi