High Performance WordPress
- 1. HIGH PERFORMANCE WordPress Iliya Polihronov WordCamp San Francisco 2012 Saturday, August 4, 12
- 2. Iliya Polihronov Systems Wrangler Automattic polihronov.wordpress.com slideshare.net/vnsavage @vnsavage Saturday, August 4, 12
- 3. WordPress.com Numbers ‣ 115 million pageviews per day ‣ 2.6 billion requests per day ‣ over 200 plugins ‣ 500ms per page Saturday, August 4, 12
- 4. Notable Users Saturday, August 4, 12
- 5. Services Installation Nginx wiki.nginx.org/Install PHP-FPM Compile PHP with --enable-fpm For Debian Squeeze $ gpg --keyserver hkp://keys.gnupg.net --recv-keys E9C74FEEA2098A6E $ gpg --keyserver hkp://keys.gnupg.net --recv-keys ABF5BD827BD9BF62 $ gpg -a --export E9C74FEEA2098A6E | apt-key add - $ gpg -a --export ABF5BD827BD9BF62 | apt-key add - $ echo 'deb http://nginx.org/packages/debian/ squeeze nginx' >> /etc/apt/sources.list $ echo 'deb http://packages.dotdeb.org squeeze-php54 all' >> /etc/apt/sources.list $ apt-get update $ apt-get install nginx php5-cli php5-fpm php5-cgi php5-mysql php5-memcache Saturday, August 4, 12
- 6. Services Installation APC php.net/manual/en/apc.installation.php MySQL percona.com/doc/percona-server/5.5/installation.html Memcached memcached.org For Debian Squeeze $ gpg --keyserver hkp://keys.gnupg.net --recv-keys 1C4CBDCDCD2EFD2A $ gpg -a --export CD2EFD2A | apt-key add - $ echo ‘deb http://repo.percona.com/apt squeeze main’ >> /etc/apt/sources.list $ apt-get update $ apt-get install php5-apc memcached percona-server-server-5.5 percona-server-client-5.5 Saturday, August 4, 12
- 7. Nginx Configuration /etc/nginx/nginx.conf worker_processes 8; worker_connections 2048; keepalive_timeout 30; gzip on; gzip_types text/css text/javascript application/x-javascript application/json text/xml; gzip_min_length 500; gzip_comp_level 5; location ~ .(css|js|jp(e)?g|gif|png|swf|ico)$ { expires 1y; } fastcgi_buffer_size 32k; fastcgi_buffers 256 4k; /etc/init.d/nginx ulimit -n 65536 Full configuration at polihronov.wordpress.com Saturday, August 4, 12
- 8. PHP-FPM and APC /etc/php5/fpm/pool.d/www.conf pm = dynamic pm.max_children = 40 pm.start_servers = 5 pm.min_spare_servers = 5 pm.max_spare_servers = 10 listen.backlog = 512 /etc/php5/conf.d/20-apc.ini extension="apc.so" apc.enabled = 1 apc.shm_size = 32M /etc/php5/fpm/php.ini output_buffering = 4096 Saturday, August 4, 12
- 9. MySQL Configuration /etc/mysql/my.cnf key_buffer = 256M sort_buffer_size = 4M read_buffer_size = 4M innodb_buffer_pool_size = 256M innodb_log_buffer_size = 8M tmp_table_size = 32M max_heap_table_size = 32M table_cache = 128 thread_cache = 64 query_cache_type = 1 query_cache_limit = 1M query_cache_size = 32M InnoDB - for tables with lots of reads and writes mysqlreport - inspect important MySQL status values Saturday, August 4, 12
- 10. Optimizing your WordPress Install ‣ Keep it up to date ‣ Avoid unnecessary plugins ‣ Avoid slow plugins http://wordpress.org/extend/plugins/p3-profiler Saturday, August 4, 12
- 11. Caching Memcached Object Cache http://wordpress.org/extend/plugins/memcached/ WP Super Cache http://wordpress.org/extend/plugins/wp-super-cache/ ‣ Custom permalinks, like /%year/%monthnum%/%postname%/ ‣ Enable all the recommended settings Saturday, August 4, 12
- 12. Benchmarks Virtual machine on a laptop, using Apache Benchmark (ab): Without APC 11.07 REQUESTS/SEC With APC 48.39 REQUESTS/SEC With APC and Caching 16,140.70 REQUESTS/SEC Saturday, August 4, 12
- 13. At a Larger Scale INTERNET Load Balancers Web Servers Caching Servers Web Servers Memcached Master-Slave MySQL Saturday, August 4, 12
- 14. Questions? HIGH PERFORMANCE WordPress Saturday, August 4, 12
- 15. Iliya Polihronov Systems Wrangler Automattic polihronov.wordpress.com slideshare.net/vnsavage @vnsavage Saturday, August 4, 12