These are slides for my talk at second meetup of Drupal Trojmiasto Group

1. Optimizing Drupal
Performance
Basic practices
by Tim Kamanin
@timonweb
timonweb.com
mailto:timur@kamanin.com
Drupal Trójmiasto 3drupal.pl

2. Reasons why most Drupal
sites are slow:
- full page renders
- serving dynamic content to
anonymous users
- slow mysql queries
- module bloat

3. Typical Drupal Stack
CSS / JavaScript Media
Drupal
Apache MySQL PHP
Linux

4. Drupal Performance Checklist

5. 1. Limit number of
your modules

6. 2. Always check what
installed modules are
doing behind the
scenes

7. 3. Architect the
system and write
modules with
performance in mind

8. 4. Split code invoked via
urls into separate files:
module_name.admin.inc,
module_name.page.inc,
etc

9. 5. use drupal_static(),
provides central static
variable storage, docs:
http://bit.ly/QD86rP

10. 6. Install fast_404

11. 7. Export views and
Panels to code

12. 8. Enable css /
javascript aggregation

13. 9. Let aggregate cache
to take care of css/js
aggregation

14. 10. Enable page and
page compression
(mod_deflate)

15. 11. Install Boost to
make anonymous caching
10 x times faster!

16. 12. Enable views and
block caching for
authorized users

17. 13. Store cache in
memory. Install
memcached or redis

18. 14. Cache PHP with APC

19. 15. Tune MySQL:
- find slow queries
- use indexes
- use EXPLAIN on queries
- tune my.cnf
- get decent query cache and
key buffer

20. 16. Tune Apache:
StartServers
MinSpareServers
MaxSpareServers
MaxClients
KeepAlive

21. 17. Remember about
mod_expires
ExpiresActive on
ExpiresByType image/jpg "access plus 1 month"
ExpiresByType image/jpeg "access plus 1 month"
ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "access plus 1 month"
ExpiresByType text/css "access plus 1 months"
ExpiresByType application/javascript "access plus 1 months"

22. 18. Separate Media and
Code:
- Move media to CDN
- Move media to
separate server

23. 19. Move search from
Database to Solr
search_api + Solr

24. What else can be done?

25. varnish, squid, load
balancing, memcached, fields
in mongdo, css sprites, Etag,
ESI, separate database
server, optimize media,
preload, postload, external
js, nginx, Lighttpd, amazon
cloud, SSD

26. Comments,
questions?
@timonweb
timonweb.com
mailto:timur@kamanin.com