id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
491	performance issue on same url	玲奈 神楽坂		"i have a site with one both http and websocket location

map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}
server {
    location /rooms.json {
        proxy_pass http://unix:/tmp/mycard-server.sock;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }
    .... other locations
}

about ~1000 long websocket connections on this url. then this url is very slow, choke up about 5s before it returns content.

but other urls is good. server load is low.

if connect to backend http://unix:/tmp/mycard-server.sock directly. it will be good. return content immediately

even i make a new url such as test.json. and configure as exactly same as rooms.json, it will be good. (there's no no load on the new test.json, while there's about 1000 long connections on production url rooms.json .  my backend don't care about request path/url).

and even just a query-string will make things better
visit /rooms.json?a=1 will be good

then i add a rewrite to nginx conf to add a query automaticly

rewrite ^/rooms.json$ /rooms.json?$time_iso8601 last;

it works! no block anymore, visit to /rooms.json will return content immediately.

for me, this rewrite solved all. but it's very strange so i reported this as bug."	defect	closed	minor	1.5	nginx-core	1.5.x	worksforme			Linux zh99998 3.2.0-40-generic #64-Ubuntu SMP Mon Mar 25 21:22:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.5.8
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-log-path=/var/log/nginx/access.log --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --lock-path=/var/lock/nginx.lock --pid-path=/var/run/nginx.pid --with-pcre-jit --with-debug --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_mp4_module --with-http_perl_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_stub_status_module --with-http_ssl_module --with-http_sub_module --with-http_xslt_module --with-http_spdy_module --with-ipv6 --with-mail --with-mail_ssl_module --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-auth-pam --add-module=/build/buildd/nginx-1.5.8/debian/modules/headers-more-nginx-module --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-development-kit --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-echo --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-http-push --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-upload-progress --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-upload-module-2.2 --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-upstream-fair --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-dav-ext-module --add-module=/build/buildd/nginx-1.5.8/debian/modules/nginx-cache-purge"