Nginx or PHP FPM ignores memory_limit in php.ini

Question

Server info: Ubuntu Server, Nginx, PHP FPM

in /etc/php5/fpm/php.ini I have: memory_limit = 512M in /etc/php5/fpm/php-fpm.conf I have: php_admin_value[memory_limit] = 512M

php_value[memory_limit] = 512M

My phpinfo looks like:

PHP Version 5.3.10-1ubuntu3.6

System Build Date

Linux snserver 3.2.0-40-generic #64-Ubuntu SMP Mon Mar 25 21:22:10 UTC 2013 x86_64 Mar 11 2013 14:34:24

Server API

FPM/FastCGI

Virtual Directory Support

disabled

Configuration File (php.ini) Path

/etc/php5/fpm

Loaded Configuration File

/etc/php5/fpm/php.ini

Scan this dir for additional .ini files /etc/php5/fpm/conf.d

Additional `.ini` files parsed

/etc/php5/fpm/conf.d/curl.ini, /etc/php5/fpm/conf.d/gd.ini, /etc/php5/fpm/conf.d/mcrypt.ini, /etc/php5/fpm/conf.d/memcache.ini, /etc/php5/fpm/conf.d/mysql.ini, /etc/php5/fpm/conf.d/mysqli.ini, /etc/php5/fpm/conf.d/pdo.ini, /etc/php5/fpm/conf.d/pdo_mysql.ini ...

...

memory_limit

128M

upload_max_filesize

20M

in /etc/nginx/nginx.conf:

    user www-data;

worker_processes 2;

pid /var/run/nginx.pid;

events {
    worker_connections 768;
    # multi_accept on;
}

http {
    client_max_body_size 20M;

    ##

    # Basic Settings

    ##
    fastcgi_buffers 16 16k;

    fastcgi_buffer_size 32k;

    proxy_buffers 4 512k;

    proxy_buffer_size 256k;

    proxy_busy_buffers_size 512k;

    fastcgi_read_timeout 3600;

    sendfile on;

    tcp_nopush on;

    tcp_nodelay on;

    keepalive_timeout 300;

    keepalive_requests 50;

    #ssl_ciphers HIGH:!aNULL:!MD5:!kEDH;

        #ssl_prefer_server_ciphers on;

        #ssl_protocols TLSv1;

        #ssl_session_cache shared:SSL:10m;

        #ssl_session_timeout 10m;

    types_hash_max_size 2048;

    # server_tokens off;

    # server_names_hash_bucket_size 64;

    # server_name_in_redirect off;

    include /etc/nginx/mime.types;

    default_type application/octet-stream;

    ##
    # Logging Settings
    ##

    access_log /var/log/nginx/access.log;

    error_log /var/log/nginx/error.log;

    ##
    # Gzip Settings
    ##

    gzip on;
    gzip_disable "msie6";

    # gzip_vary on;
    # gzip_proxied any;
    # gzip_comp_level 6;
    # gzip_buffers 16 8k;
    # gzip_http_version 1.1;
    # gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

    ##
    # nginx-naxsi config
    ##
    # Uncomment it if you installed nginx-naxsi
    ##

    #include /etc/nginx/naxsi_core.rules;

    ##
    # nginx-passenger config
    ##
    # Uncomment it if you installed nginx-passenger
    ##

    #passenger_root /usr;
    #passenger_ruby /usr/bin/ruby;

    ##
    # Virtual Host Configs
    ##

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
}

The problem is when i change upload_max_filesize size then the phpinfo will show the new value, but when I change memory_limit then nothing changes. I guess in somewhere the memory_limit is overwrited. But i cannot find it. Can anyone help me?

troseman troseman · Accepted Answer · 2013-05-05T00:17:55

You can take Nginx out of the picture, it just passes the request on, it's in php-fpm running your php code.

you might check your suhosin settings, suhosin.memory_limit.

when you see your phpinfo output there should be 2 columns, master and local for memory_limit, what do these each show?

128M is the default for memory_limit in php 5.3