id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,uname,nginx_version 1153,Nginx reload hang,avkarenow@…,,"Hello, I found a bug with fast and frequent reloading server. Tested on FreeBSD 10.3 and 9.3 with nginx 1.10.1 and 1.10.2. How to reproduce: # while true; do service nginx reload; done Performing sanity check on nginx configuration: nginx: the configuration file /usr/local/etc/nginx/nginx.conf syntax is ok nginx: configuration file /usr/local/etc/nginx/nginx.conf test is successful Performing sanity check on nginx configuration: nginx: the configuration file /usr/local/etc/nginx/nginx.conf syntax is ok nginx: configuration file /usr/local/etc/nginx/nginx.conf test is successful Performing sanity check on nginx configuration: nginx: the configuration file /usr/local/etc/nginx/nginx.conf syntax is ok nginx: configuration file /usr/local/etc/nginx/nginx.conf test is successful Performing sanity check on nginx configuration: nginx: the configuration file /usr/local/etc/nginx/nginx.conf syntax is ok nginx: configuration file /usr/local/etc/nginx/nginx.conf test is successful (...) The number of processes increases to 1024, like that: PID TT STAT TIME COMMAND 10688 ?? Z 0:00.00 10702 ?? Z 0:00.00 10751 ?? Z 0:00.00 10800 ?? Z 0:00.00 10848 ?? Z 0:00.00 10890 ?? Z 0:00.00 10938 ?? Z 0:00.00 10986 ?? Z 0:00.00 11030 ?? Z 0:00.00 11075 ?? Z 0:00.00 11119 ?? Z 0:00.00 11166 ?? Z 0:00.00 11210 ?? Z 0:00.01 11257 ?? Z 0:00.00 11303 ?? Z 0:00.00 11350 ?? Z 0:00.00 11399 ?? Z 0:00.00 11449 ?? Z 0:00.00 11494 ?? Z 0:00.00 11539 ?? Z 0:00.00 11587 ?? Z 0:00.00 11634 ?? Z 0:00.00 11682 ?? Z 0:00.00 11726 ?? Z 0:00.00 11774 ?? Z 0:00.00 11819 ?? Z 0:00.00 11867 ?? Z 0:00.00 11916 ?? Z 0:00.00 11963 ?? Z 0:00.00 12012 ?? Z 0:00.00 12072 ?? Z 0:00.00 12118 ?? Z 0:00.00 12163 ?? Z 0:00.00 12214 ?? Z 0:00.00 12266 ?? Z 0:00.00 12318 ?? Z 0:00.00 12365 ?? Z 0:00.00 12416 ?? Z 0:00.00 12463 ?? Z 0:00.00 12515 ?? Z 0:00.00 12565 ?? Z 0:00.00 12611 ?? Z 0:00.00 12660 ?? Z 0:00.00 12704 ?? Z 0:00.00 12750 ?? Z 0:00.00 12800 ?? Z 0:00.00 12844 ?? Z 0:00.00 12894 ?? Z 0:00.00 12943 ?? Z 0:00.00 12992 ?? Z 0:00.00 13034 ?? Z 0:00.00 13083 ?? Z 0:00.00 13126 ?? Z 0:00.00 13170 ?? Z 0:00.00 13220 ?? S 0:00.00 nginx: worker process (nginx) 13261 ?? S 0:00.00 nginx: worker process (nginx) When it exceed 1024 in nginx error log: 2016/12/11 13:35:07 [alert] 17134#100094: no more than 1024 processes can be spawned 2016/12/11 13:35:07 [alert] 17134#100094: no more than 1024 processes can be spawned 2016/12/11 13:35:07 [alert] 17134#100094: no more than 1024 processes can be spawned And now nginx hangs - when I stop reloading - processes for user www are normal but nginx not reponse untill restart.",defect,closed,major,,nginx-core,1.10.x,wontfix,,,FreeBSD fbsd 9.3-RELEASE FreeBSD 9.3-RELEASE #0 r268512: Thu Jul 10 23:44:39 UTC 2014 root@snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64,"nginx version: nginx/1.10.2 built with OpenSSL 1.0.2j 26 Sep 2016 TLS SNI support enabled configure arguments: --prefix=/usr/local/etc/nginx --with-cc-opt='-I /usr/local/include' --with-ld-opt='-L /usr/local/lib' --conf-path=/usr/local/etc/nginx/nginx.conf --sbin-path=/usr/local/sbin/nginx --pid-path=/var/run/nginx.pid --error-log-path=/var/log/nginx/error.log --user=www --group=www --modules-path=/usr/local/libexec/nginx --with-file-aio --with-ipv6 --http-client-body-temp-path=/var/tmp/nginx/client_body_temp --http-fastcgi-temp-path=/var/tmp/nginx/fastcgi_temp --http-proxy-temp-path=/var/tmp/nginx/proxy_temp --http-scgi-temp-path=/var/tmp/nginx/scgi_temp --http-uwsgi-temp-path=/var/tmp/nginx/uwsgi_temp --http-log-path=/var/log/nginx/access.log --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gzip_static_module --with-http_gunzip_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_stub_status_module --with-http_sub_module --with-pcre --with-http_v2_module --with-stream=dynamic --with-stream_ssl_module --with-threads --with-mail=dynamic --without-mail_imap_module --without-mail_pop3_module --without-mail_smtp_module --with-mail_ssl_module --with-http_ssl_module"