Sessions at Open Source Bridge 2009 about Performance

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Wednesday 17th June 2009

  • Layers of Caching: Key to scaling your website

    by Narayan Newton and Lance Albertson

    Caching is essentially a way of keeping the most used parts of a website in memory so that it gets served quickly. This will reduce CPU and I/O overhead and thus make the site very fast. Unfortunately this doesn't happen magically without some extra work.

    This talk will cover the several layers that you should know about how they improve the sites speed. Some of these will include:

    • "Squid":http://www.squid-cache.org/ / "mod_cache":http://httpd.apache.org/docs/2.2/caching.html (disk backed caching)
    • "memcached":http://www.danga.com/memcached/
    • "APC":http://us.php.net/apc & other opcode caching
    • Application level caching
    • Configuring Apache properly
    • Solutions for python & ruby

    I will also go over how we utilize caching on the Drupal infrastructure which is hosted at the OSL along with other real world examples.

    At 1:45pm to 2:30pm, Wednesday 17th June

    Coverage note

Thursday 18th June 2009

  • Linux Server Profiling

    by M. Edward Borasky

    A number of open source tools exist that make profiling Linux servers easier. These tools include traditional Unix utilities like "sar" and "iostat", but they also include some tools that go deep into the processors and I/O subsystems.

    This session will present a tutorial on some of these open source tools. I’ll show you how to get them, how to install them, how to run them, and how to interpret their output. The tools should work on any of the major Linux distributions, but the focus will be on the three most popular community-based distributions, Ubuntu, openSUSE and Fedora.

    At 7:00pm to 8:30pm, Thursday 18th June

    Coverage note