highperformanceforsmallsitesweb.stanford.edu/.../highperformanceforsmallsites.pdf ·...
TRANSCRIPT
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High Performance for Small Sites John Bickar, Stanford Web Services
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Small VPS
What is a “small site?”
Shared hos=ng
Limited/no access to Linux/Apache layer
Cannot install Varnish, memcache, etc.
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What is a “small site?”
If you run: $ sudo apt-get install varnish And it returns, “user not sufficiently super,” you might have a small site.
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YOUR SLOW DRUPAL SITE
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What you want.
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What you can make your users think you have.
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What you’re still not going to get.
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The Crea=on of a Slow Drupal Site
A play in four acts
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ACT I: INCEPTION
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“We need a Drupal!”
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ACT II: CREATION
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Work, work, work
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ACT III: EXPANSION
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“That’s great!”
“Can we add…”
Events
Contact form
Restricted content
Room reserva=ons Seventeen more roles Publishing workflow Ten more content types
Slap Chop
George Foreman grill
Custom breadcrumbs
Custom .tpl.php
Custom web app
Mobile device detec=on
Field-‐level permissions GI Joe with the kung-‐fu grip
Discussion forums
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ACT IV: DECELERATION
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May 5th, 2012 21
Ini=al Assessment
Hos=ng Op=ons
Traffic
Resources
Priori=es
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May 5th, 2012 22
Assessing Performance Bo^lenecks
When?
Where?
What?
Who?
Why?
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May 5th, 2012 23
General Tips
Delete unnecessary modules
Disable unnecessary modules
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May 5th, 2012 27
General Tips
Use them
Drupal core performance se`ngs
admin/se`ngs/performance (D6)
admin/config/development/performance (D7)
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May 5th, 2012 28
Tes=ng Tools
YSlow
Inspector in Chrome, Safari
ApacheBench
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May 5th, 2012 29
Advanced Performance -‐ Caching
Cache Rules Everything Around Me
Cache gets stale
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May 5th, 2012 30
Advanced Performance -‐ Caching
cron
32 * * * * curl -sS http://www.example.com/foo > \/dev/null
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May 5th, 2012 31
Advanced Performance -‐ Caching
Views caching
Panels caching
Boost
AuthCache
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Prove it techcommons.stanford.edu
Homepage load =me with uncached View:
9.7 seconds
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Prove it techcommons.stanford.edu
Homepage load =me ager enabling Views caching:
2.8 seconds
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Prove it techcommons.stanford.edu
Homepage load =me ager enabling Boost caching:
117 milliseconds
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May 5th, 2012 35
Advanced Performance -‐ Debugging
Devel
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May 5th, 2012 39
Summary
Know thy users
Keep Calm And
DRUPAL ON Know thy content
Know thy traffic
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Appendix
Linkies: • h^p://techcommons.stanford.edu/topics/web-‐development/benchmarking-‐site-‐performance-‐apachebench
• h^p://techcommons.stanford.edu/topics/drupal/boost
• h^p://techcommons.stanford.edu/topics/drupal/improving-‐drupal-‐performance-‐and-‐speed-‐leland-‐servers