I need a complete rundown of our nginx+PHP-fpm+apc+memcached configuration running on top of Ubuntu 12.04 (VPS). We are experiencing both stability and performances issues. Requirements: *Long experience of website management *nginx expert *Wordpress and vBulletin experience (if for example a wordpress or vbulletin plugin/configuration error is causing problems) *A fair amount of positive reviews on Freelancer.com A few examples from our nginx error log: [error] 4614#0: *40820290 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: .... [error] 4615#0: *40820891 connect() to unix:/var/run/php-fpm/php-fpm-www.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: A few examples from our PHP-FPM log: WARNING: [pool www] child 2151, script '/var/www..............' (request: "GET /forum/showthread.php") execution timed out (76.746687 sec), terminating WARNING: [pool www] child 5422 said into stderr: "NOTICE: PHP message: PHP Fatal error: Call to undefined function wp_cache_get() WARNING: pid 22009, fpm_stdio_child_said(), line 166: [pool www] child 22042 said into stderr: "NOTICE: sapi_cgi_log_message(), line 659: PHP message: PHP Warning: include_once(): Unable to allocate memory for pool. Keywords: Linux, Management, Website, PHP, Nginx