LAMP Optimization

LAMP Optimization LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

50 Slides! (counting this one) http://slideshare.net/csixty4 LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

I’m not a sysadmin LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

I’m not a sysadmin but I know what I like. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

I Like Fast Servers LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

LAMP Linux Apache MySQL PHP LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Optimizing Linux Prevent swapping Disable atime updates Buy another machine LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

vmstat -S M Virtual memory statistics in Megabytes (or Kilobytes) LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

“Free” drop + High “Swap” = Poor performance LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

RAM is cheap. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

“Access Timestamp” LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

“I agree, we really should do something about atime.” - Linus Torvalds, 2007 LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Edit /etc/fstab In the fourth column, add noatime,nodiratime Save. Reboot. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Time is money. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Add another server Move database to its own server Load balance Cluster LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Optimizing Apache mod_cache Keep the riff-raff out Increase MaxClients LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

a2enmod cache mem_cache LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Cache static content in RAM LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Cache static content in RAM It’s cheap. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

mod_evasive LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Keep out vulnerability scanners and attacks LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

More resources for everyone else. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

MaxClients in your httpd.conf LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Trial and error LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Enough to handle simultaneous connections. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

And RAM is still cheap. LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Optimizing MySQL Key Buffer Query Cache InnoDB LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Key Buffer in my.cnf LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Caches table indexes LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

key_buffer_size=128M 20-25% (or so) of available RAM LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Query Buffer in my.cnf LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Caches parsed SELECTs LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

query_buffer_size=64M Half of key_buffer_size LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

You get the idea.

InnoDB database engine LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Row vs. table locking LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Faster UPDATE LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Optimized for key access LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Faster SELECT & UPDATE LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Optimizing PHP Upgrade to PHP 5.3 Install an accelerator Enable output buffering LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

PHP 5.3 has mysqlnd LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Native Driver LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Up to 30% faster LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

PHP Accelerators Alternative PHP Cache (APC) : 3x-5x faster eAccelerator XCache Zend Optimizer+ LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Output Buffering LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Actually makes code run slightly slower LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Browser gets whole page at once LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

It certainly feels faster LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

Questions? davidmichaelross.com daveross.tel LAMP Optimization :: Dave Ross :: Suburban Chicago PHP & Web Development Meetup :: SuburbanChicagoPHP.org :: October 1, 2009

LAMP Optimization

by Dave Ross on Sep 30, 2009

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LAMP Optimization — Presentation Transcript

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