Safari intermittently hangs when loading FCGI request

[Sen Haerens]

As you can see in attached debug log there is ±20 second delay before
returning the page to Safari 5.0.2. Profiling PHP-FPM and PHP script
itself show that they render under 0.03 seconds. The connection stall is
not happening in Firefox 3.6.10

These are the response headers in Safari:
Connection:close
Content-Type:text/html
Date:Mon, 18 Oct 2010 20:56:23 GMT
Server:nginx/0.8.52
Transfer-Encoding:Identity

These are the response headers in Firefox:
Server: nginx/0.8.52
Date: Mon, 18 Oct 2010 20:56:02 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close

I tested Nginx 0.8.52 with gzip off, keepalive_timeout 0,
fastcgi_max_temp_file_size 0 but no difference.

nginx version: nginx/0.8.52
TLS SNI support enabled
configure arguments: --conf-path=/etc/nginx/nginx.conf
--error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid
--lock-path=/var/lock/nginx.lock
--http-log-path=/var/log/nginx/access.log
--http-client-body-temp-path=/var/lib/nginx/body
--http-proxy-temp-path=/var/lib/nginx/proxy
--http-fastcgi-temp-path=/var/lib/nginx/fastcgi
--http-uwsgi-temp-path=/var/lib/nginx/uwsgi
--http-scgi-temp-path=/var/lib/nginx/scgi --with-debug
--with-http_stub_status_module --with-http_flv_module
--with-http_ssl_module --with-http_gzip_static_module
--with-http_realip_module --with-ipv6 --without-mail_pop3_module
--without-mail_imap_module --without-mail_smtp_module --with-file-aio
--add-module=/build/buildd/nginx-0.8.52/contrib/nginx-upload-progress-module

Attachments:
http://www.ruby-forum.com/attachment/5218/safari.connection.normal.log
http://www.ruby-forum.com/attachment/5219/safari.connection.slow.log
http://www.ruby-forum.com/attachment/5220/safari.connection.slow2.log


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