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Core: error logging rate limiting.
With this change, error logging to files can be rate-limited with
the "rate=" parameter. The parameter specifies allowed log messages
rate to a particular file (per worker), in messages per second (m/s).
By default, "rate=1000m/s" is used.
Rate limiting is implemented using the "leaky bucket" method, similarly
to the limit_req module.
Maximum burst size is set to the number of log messages per second
for each severity level, so "error" messages are logged even if the
rate limit is hit by "info" messages (but not vice versa). When the
limit is reached for a particular level, the "too many log messages,
limiting" message is logged at this level.
If debug logging is enabled, either for the particular log file or for
the particular connection, rate limiting is not used.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 25 Jun 2024 22:58:56 +0300 |
parents | 9fb994513776 |
children |
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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 $DARWIN_SRCS" ngx_spacer=' ' MAIN_LINK= MODULE_LINK="-shared -Wl,-undefined,dynamic_lookup" CC_AUX_FLAGS="$CC_AUX_FLAGS -D__APPLE_USE_RFC_3542" # 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() 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 = 0; if (!OSAtomicCompareAndSwap32Barrier(0, 1, &lock)) return 1" . auto/feature