fastcgi_max_temp_file_size 0; This directive turns off fastcgi buffering according to the source code.

i did this, and the buffer errors are gone. however, the pages load very very slow. take about 5-10 seconds to load the page.

could it be my php-fpm.conf ?

the thing is why i am going nuts about this is because the same exact config (same nginx/php-fpm), i am running on a centos server, and i am able to push over 200 mb/s and everything works perfectly fine.

i switched over to freebsd to squeeze some more performance out of the server though.

also i have noticed that when more and more connections are established to the server, my php-cgi processes are frozen in "sbwait" state:

32514 nobody 1 4 0 60816K 14252K sbwait 4 0:12 0.00% php-cgi 32562 nobody 1 4 0 60816K 14212K sbwait 2 0:11 0.00% php-cgi 32577 nobody 1 4 0 60816K 14240K sbwait 6 0:11 0.00% php-cgi 32479 nobody 1 4 0 60816K 14244K sbwait 0 0:11 0.00% php-cgi 32475 nobody 1 4 0 60816K 14256K sbwait 0 0:11 0.00% php-cgi 32497 nobody 1 4 0 60816K 14228K sbwait 0 0:11 0.00% php-cgi 32527 nobody 1 4 0 60816K 14208K sbwait 1 0:11 0.00% php-cgi 32564 nobody 1 4 0 60816K 14192K sbwait 4 0:10 0.00% php-cgi

posted php-fpm.conf below.

<?xml version="1.0" ?> <configuration>

All relative paths in this config are relative to php's install prefix

<section name="global_options">

Pid file <value name="pid_file">/usr/local/kphp/logs/php-fpm.pid</value>

Error log file <value name="error_log">/usr/local/kphp/logs/php-fpm.log</value>

Log level <value name="log_level">notice</value>

When this amount of php processes exited with SIGSEGV or SIGBUS ... <value name="emergency_restart_threshold">10</value>

... in a less than this interval of time, a graceful restart will be initiated. Useful to work around accidental curruptions in accelerator's shared memory. <value name="emergency_restart_interval">1m</value>

Time limit on waiting child's reaction on signals from master <value name="process_control_timeout">5s</value>

Set to 'no' to debug fpm <value name="daemonize">yes</value>

</section>

<workers>

<section name="pool">

Name of pool. Used in logs and stats. <value name="name">nginx</value>

Address to accept fastcgi requests on. Valid syntax is 'ip.ad.re.ss:port' or just 'port' or '/path/to/unix/socket' <value name="listen_address">127.0.0.1:8000</value>

<value name="listen_options">

Set listen(2) backlog <value name="backlog">-1</value>

Set permissions for unix socket, if one used. In Linux read/write permissions must be set in order to allow connections from web server. Many BSD-derrived systems allow connections regardless of permissions. <value name="owner"></value> <value name="group"></value> <value name="mode">0666</value> </value>

Additional php.ini defines, specific to this pool of workers. <value name="php_defines"> <!-- <value name="sendmail_path">/usr/sbin/sendmail -t -i</value> --> <!-- <value name="display_errors">0</value> --> </value>

Unix user of processes <value name="user">nobody</value>

Unix group of processes <value name="group">nobody</value>

Process manager settings <value name="pm">

Sets style of controling worker process count. Valid values are 'static' and 'apache-like' <value name="style">static</value>

Sets the limit on the number of simultaneous requests that will be served. Equivalent to Apache MaxClients directive. Equivalent to PHP_FCGI_CHILDREN environment in original php.fcgi Used with any pm_style. <value name="max_children">128</value>

Settings group for 'apache-like' pm style <value name="apache_like">

Sets the number of server processes created on startup. Used only when 'apache-like' pm_style is selected <value name="StartServers">32</value>

Sets the desired minimum number of idle server processes. Used only when 'apache-like' pm_style is selected <value name="MinSpareServers">32</value>

Sets the desired maximum number of idle server processes. Used only when 'apache-like' pm_style is selected <value name="MaxSpareServers">64</value>

</value>

</value>

The timeout (in seconds) for serving a single request after which the worker process will be terminated Should be used when 'max_execution_time' ini option does not stop script execution for some reason '0s' means 'off' <value name="request_terminate_timeout">0s</value>

The timeout (in seconds) for serving of single request after which a php backtrace will be dumped to slow.log file '0s' means 'off' <value name="request_slowlog_timeout">0s</value>

The log file for slow requests <value name="slowlog">logs/slow.log</value>

Set open file desc rlimit <value name="rlimit_files">2048</value>

Set max core size rlimit <value name="rlimit_core">0</value>

Chroot to this directory at the start, absolute path <value name="chroot"></value>

Chdir to this directory at the start, absolute path <value name="chdir"></value>

Redirect workers' stdout and stderr into main error log. If not set, they will be redirected to /dev/null, according to FastCGI specs <value name="catch_workers_output">yes</value>

How much requests each process should execute before respawn. Useful to work around memory leaks in 3rd party libraries. For endless request processing please specify 0 Equivalent to PHP_FCGI_MAX_REQUESTS <value name="max_requests">500</value>

Comma separated list of ipv4 addresses of FastCGI clients that allowed to connect. Equivalent to FCGI_WEB_SERVER_ADDRS environment in original php.fcgi (5.2.2+) Makes sense only with AF_INET listening socket. <value name="allowed_clients">127.0.0.1</value>

Pass environment variables like LD_LIBRARY_PATH All $VARIABLEs are taken from current environment <value name="environment"> <value name="HOSTNAME">$HOSTNAME</value> <value name="PATH">/usr/local/bin:/usr/bin:/bin</value> <value name="TMP">/tmp</value> <value name="TMPDIR">/tmp</value> <value name="TEMP">/tmp</value> <value name="OSTYPE">$OSTYPE</value> <value name="MACHTYPE">$MACHTYPE</value> <value name="MALLOC_CHECK_">2</value> </value>

</section>

</workers>

</configuration>

Maxim Dounin wrote: