Optimisation

There are many things which can be done to optimise the performance, so of them will be minor and some of them may require larger changes. The two goals are:

• Faster
• Less Bandwidth (smaller pages and/or more caching)

1) Develop Automated Performance Metrics

Before Sahana Eden can be effectively optimised, we need a set of performance metrics to optimise to. Metrics should:

• Test as wide as wide a variety of the code as possible.
• Be able to be automatically tested (See: DeveloperGuidelinesTesting).
• Cover different usage scenarios
  • Low bandwidth
  • High number of users

The Automated Performance Metrics, will also allow us to better share performance statistics of Sahana Eden.

2) Make Enhancements to Sahana Eden

Once the metrics have been developed enhancements can be made to improve these. These enhancement

• Using Profiler Tools to identify parts of the code which require more computation (http://eden.sahanafoundation.org/wiki/DeveloperGuidelinesOptimisation#Profiling).
• Avoid excess DB calls, Use web2py's cache instead
• Move as much JS to static files
• Investigate the possibility of loading large page components using AJAX
• Use LabJS to to download/execute scripts asynchronously: ​http://labjs.com

See Also:

• DeveloperGuidelinesOptimisation