Mercurial > hg > nginx
view auto/os/linux @ 4115:70a45a504905
Workaround for cpu hog on errors with cached connections.
Just doing another connect isn't safe as peer.get() may expect peer.tries
to be strictly positive (this is the case e.g. with round robin with multiple
upstream servers). Increment peer.tries to at least avoid cpu hog in
round robin balancer (with the patch alert will be seen instead).
This is not enough to fully address the problem though, hence TODO. We
should be able to inform balancer that the error wasn't considered fatal
and it may make sense to retry the same peer.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 15 Sep 2011 18:12:58 +0000 |
parents | 4068898a6a7c |
children | d620f497c50f |
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# Copyright (C) Igor Sysoev have=NGX_LINUX . auto/have_headers CORE_INCS="$UNIX_INCS" CORE_DEPS="$UNIX_DEPS $LINUX_DEPS" CORE_SRCS="$UNIX_SRCS $LINUX_SRCS" ngx_spacer=' ' cc_aux_flags="$CC_AUX_FLAGS" CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64" # Linux kernel version version=$((`uname -r \ | sed -n -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/ \ \1*256*256+\2*256+\3/p' \ -e 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1*256*256+\2*256/p'`)) version=${version:-0} # enable the rt signals on Linux between 2.2.19 and 2.6.17 if [ \( $version -ge 131603 -a $version -lt 132626 \) -o $EVENT_RTSIG = YES ] then echo " + rt signals found" have=NGX_HAVE_RTSIG . auto/have EVENT_MODULES="$EVENT_MODULES $RTSIG_MODULE" CORE_SRCS="$CORE_SRCS $RTSIG_SRCS" EVENT_FOUND=YES fi # posix_fadvise64() had been implemented in 2.5.60 if [ $version -lt 132412 ]; then have=NGX_HAVE_POSIX_FADVISE . auto/nohave fi # epoll, EPOLLET version ngx_feature="epoll" ngx_feature_name="NGX_HAVE_EPOLL" ngx_feature_run=yes ngx_feature_incs="#include <sys/epoll.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int efd = 0, fd = 1, n; struct epoll_event ee; ee.events = EPOLLIN|EPOLLOUT|EPOLLET; ee.data.ptr = NULL; efd = epoll_create(100); if (efd == -1) return 1;" . auto/feature if [ $ngx_found = yes ]; then have=NGX_HAVE_CLEAR_EVENT . auto/have CORE_SRCS="$CORE_SRCS $EPOLL_SRCS" EVENT_MODULES="$EVENT_MODULES $EPOLL_MODULE" EVENT_FOUND=YES fi # sendfile() CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE" ngx_feature="sendfile()" ngx_feature_name="NGX_HAVE_SENDFILE" ngx_feature_run=yes ngx_feature_incs="#include <sys/sendfile.h> #include <errno.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int s = 0, fd = 1; ssize_t n; off_t off = 0; n = sendfile(s, fd, &off, 1); if (n == -1 && errno == ENOSYS) return 1" . auto/feature if [ $ngx_found = yes ]; then CORE_SRCS="$CORE_SRCS $LINUX_SENDFILE_SRCS" fi # sendfile64() CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64" ngx_feature="sendfile64()" ngx_feature_name="NGX_HAVE_SENDFILE64" ngx_feature_run=yes ngx_feature_incs="#include <sys/sendfile.h> #include <errno.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int s = 0, fd = 1; ssize_t n; off_t off = 0; n = sendfile(s, fd, &off, 1); if (n == -1 && errno == ENOSYS) return 1" . auto/feature ngx_include="sys/prctl.h"; . auto/include # prctl(PR_SET_DUMPABLE) ngx_feature="prctl(PR_SET_DUMPABLE)" ngx_feature_name="NGX_HAVE_PR_SET_DUMPABLE" ngx_feature_run=yes ngx_feature_incs="#include <sys/prctl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1) return 1" . auto/feature # sched_setaffinity() ngx_feature="sched_setaffinity()" ngx_feature_name="NGX_HAVE_SCHED_SETAFFINITY" ngx_feature_run=no ngx_feature_incs="#include <sched.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="long mask = 0; sched_setaffinity(0, 32, (cpu_set_t *) &mask)" . auto/feature # crypt_r() ngx_feature="crypt_r()" ngx_feature_name="NGX_HAVE_GNU_CRYPT_R" ngx_feature_run=no ngx_feature_incs="#include <crypt.h>" ngx_feature_path= ngx_feature_libs=-lcrypt ngx_feature_test="struct crypt_data cd; crypt_r(NULL, NULL, &cd);" . auto/feature ngx_include="sys/vfs.h"; . auto/include CC_AUX_FLAGS="$cc_aux_flags -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64"