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HIGH PERFORMANCE
WordPress
Iliya PolihronovWordCamp San Francisco 2012
Saturday, August 4, 12
Iliya PolihronovSystems WranglerAutomattic
polihronov.wordpress.comslideshare.net/vnsavage @vnsavage
Saturday, August 4, 12
WordPress.com Numbers
‣ 115 million pageviews per day
‣ 2.6 billion requests per day
‣ over 200 plugins
‣ 500ms per page
Saturday, August 4, 12
Notable Users
Saturday, August 4, 12
Services InstallationNginx
PHP-FPM
wiki.nginx.org/Install
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
Services InstallationAPC
MySQL
php.net/manual/en/apc.installation.php
percona.com/doc/percona-server/5.5/installation.html
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
Memcached memcached.org
Saturday, August 4, 12
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
PHP-FPM and APC/etc/php5/fpm/pool.d/www.conf
pm = dynamicpm.max_children = 40pm.start_servers = 5pm.min_spare_servers = 5pm.max_spare_servers = 10listen.backlog = 512
/etc/php5/conf.d/20-apc.ini
extension="apc.so"apc.enabled = 1apc.shm_size = 32M
/etc/php5/fpm/php.ini
output_buffering = 4096
Saturday, August 4, 12
MySQL Configuration/etc/mysql/my.cnf
key_buffer = 256Msort_buffer_size = 4Mread_buffer_size = 4Minnodb_buffer_pool_size = 256Minnodb_log_buffer_size = 8M
tmp_table_size = 32Mmax_heap_table_size = 32M
table_cache = 128thread_cache = 64
query_cache_type = 1query_cache_limit = 1Mquery_cache_size = 32M
InnoDB - for tables with lots of reads and writesmysqlreport - inspect important MySQL status values
Saturday, August 4, 12
Optimizing yourWordPress Install
‣ Keep it up to date
‣ Avoid unnecessary plugins
‣ Avoid slow pluginshttp://wordpress.org/extend/plugins/p3-profiler
Saturday, August 4, 12
Caching
WP Super Cachehttp://wordpress.org/extend/plugins/wp-super-cache/
Memcached Object Cachehttp://wordpress.org/extend/plugins/memcached/
‣ Custom permalinks, like /%year/%monthnum%/%postname%/
‣ Enable all the recommended settings
Saturday, August 4, 12
Benchmarks
With APC and Caching
Virtual machine on a laptop, using Apache Benchmark (ab):
16,140.70 REQUESTS/SEC
With APC
48.39 REQUESTS/SEC
Without APC
11.07 REQUESTS/SEC
Saturday, August 4, 12
At a Larger Scale
Load Balancers
INTERNET
Web Servers Web ServersCaching Servers
Master-Slave MySQLMemcached
Saturday, August 4, 12
HIGH PERFORMANCE
WordPress
Questions?
Saturday, August 4, 12
Iliya PolihronovSystems WranglerAutomattic
polihronov.wordpress.comslideshare.net/vnsavage @vnsavage
Saturday, August 4, 12
