On Wednesday 24 February 2016 09:17:01 vizl wrote: > Hello, I have strange issuses with nginx workers. For some time after start > Nginx I notice that some process of workers cause high load to CPU ( > principally sys CPU). > > At first I've got syscall traces from one of such process: > > futex(0x157d914, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x157d910, {FUTEX_OP_SET, 0, > FUTEX_OP_CMP_GT, 1}) = 1 > epoll_wait(38, {{EPOLLIN, {u32=7156096, u64=7156096}}}, 512, -1) = 1 > epoll_ctl(38, EPOLL_CTL_ADD, 178, {EPOLLOUT|EPOLLET, {u32=3888102096, > u64=140028411886288}}) = 0 > epoll_wait(38, {{EPOLLOUT, {u32=3888102096, u64=140028411886288}}}, 512, -1) > = 1 > epoll_ctl(38, EPOLL_CTL_DEL, 178, 7ffda2bc7f30) = 0 > futex(0x157d914, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x157d910, {FUTEX_OP_SET, 0, > FUTEX_OP_CMP_GT, 1}) = 1 > epoll_wait(38, {{EPOLLIN, {u32=7156096, u64=7156096}}}, 512, -1) = 1 > epoll_ctl(38, EPOLL_CTL_ADD, 178, {EPOLLOUT|EPOLLET, {u32=3888102096, > u64=140028411886288}}) = 0 > epoll_wait(38, {{EPOLLOUT, {u32=3888102096, u64=140028411886288}}}, 512, -1) > = 1 > epoll_ctl(38, EPOLL_CTL_DEL, 178, 7ffda2bc7f30) = 0 > futex(0x157d914, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x157d910, {FUTEX_OP_SET, 0, > FUTEX_OP_CMP_GT, 1}) = 1 > futex(0x157d8d0, FUTEX_WAKE_PRIVATE, 1) = 1 > > epoll_wait, epoll_ctl, futex are repeated circularly. > > Then I've got lsof of process and see who owns of 38 file descriptor: > > nginx 18862 www 38u a_inode 0,9 0 6 > [eventpoll] > > also I see several CLOSE_WAIT sockets > > nginx 18862 www 101u IPv4 85643376 0t0 TCP > 154.59.82.194:http->105.107.179.210:24519 (CLOSE_WAIT) > nginx 18862 www 133r REG 8,3 0 4743 > /mnt/ssd1/wwwroot/71/7/27394667.mp4 (deleted) > nginx 18862 www 178u IPv4 86054929 0t0 TCP > 154.59.82.194:http->5adc98ed.bb.sky.com:45665 (CLOSE_WAIT) > nginx 18862 www 179r REG 8,3 0 5098 > /mnt/ssd1/wwwroot/21/9/29603499.mp4 (deleted) > > > Nginx has such version and modules: > > nginx version: nginx/1.9.11 > built with OpenSSL 1.0.2f 28 Jan 2016 > TLS SNI support enabled > configure arguments: --prefix=/usr --conf-path=/etc/nginx/nginx.conf > --error-log-path=/var/log/nginx/error_log --pid-path=/run/nginx.pid > --lock-path=/run/lock/nginx.lock --with-cc-opt=-I/usr/include > --with-ld-opt=-L/usr/lib64 --http-log-path=/var/log/nginx/access_log > --http-client-body-temp-path=/var/lib/nginx/tmp/client > --http-proxy-temp-path=/var/lib/nginx/tmp/proxy > --http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi > --http-scgi-temp-path=/var/lib/nginx/tmp/scgi > --http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi --with-file-aio --with-ipv6 > --with-pcre --with-threads --without-http_autoindex_module > --without-http_fastcgi_module --without-http_geo_module > --without-http_limit_req_module --without-http_limit_conn_module > --without-http_memcached_module --without-http_uwsgi_module > --with-http_flv_module --with-http_gzip_static_module --with-http_mp4_module > --with-http_perl_module > --add-module=external_module/headers-more-nginx-module-0.261 > --add-module=external_module/ngx_estreaming_module-0.01 > --add-module=external_module/ngx_slice_module-0.01 --with-http_ssl_module > --without-mail_imap_module --without-mail_pop3_module > --without-mail_smtp_module --user='www --group=www' > > and using for video streaming. > > Has anyone encountered such behavior ? Help please. > [..]
Could you provide a minimal configuration that is causing problems with debug log? See: http://nginx.org/en/docs/debugging_log.html wbr, Valentin V. Bartenev _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx