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Waterfall AntiPatterns with Rick Viscomi

Waterfall AntiPatterns with Rick Viscomi

You've been asked to investigate why your web site is loading slowly. You've heard of so you enter the URL and run a test. What appears next is a colorful chart that looks like a Dr. Seuss illustration. Some bars are long, some are short. Some bars are blue, some are green. "That's nice," you say to yourself, wondering what to do next. It looks benign, innocently simple. But you know it holds many secrets.

The waterfall chart is a mysterious force to some developers. Performance gurus seem to be able to divine the ailments of a slow site at one quick glance. "How?" you wonder. The reality is that anyone can read a waterfall chart - if they know that they are looking for.

This presentation will bestow upon you the ability to recognize specific patterns in a waterfall chart, patterns which are the signs of a slow site. Using these newfound skills, you will become that performance guru and everyone will rejoice.

Rick Viscomi (@rick_viscomiis a web developer at YouTube working on front end infrastructure and latency. A New York native, Rick worked as a web performance engineer on top Alexa properties including Food Network, Travel Channel, HGTV, and more.



The event is hosted at New Relic on Thursday, June 6th, 2013 at 7:00PM. Doors open at 6:30PM. Food and drinks will be provided by our sponsor New Relic (thanks guys!).


  • 18:30 :: Check-in & Mingle
  • 19:00 :: Introductions & Presentation
  • 20:00 :: Questions and Answer & Open Form
  • 20:30 :: Networking & Discussion
  • ??? :: Beers at the pub!

New Relic is located at 188 Spear Street in San Francisco.



O'Reilly Velocity Conference - O'Reilly Velocity Web Performance and Operations Conference

Akamai - Optimize Content & Media Delivery

Strangeloop provides advanced front-end optimization (FEO) solutions to companies like eBay/PayPal, Visa, and O'Reilly Media.

SOASTA - SOASTA’s web and mobile app test automation solution enables teams to test with unprecedented speed, scale and precision.

New Relic - Deep application monitoring for your web & mobile apps without the time-consuming configuration


Join or login to comment.

  • Suyash J.

    Is Marakana going to be recording this talk?

    June 4, 2013

  • Alan K.

    Very interesting talk and conversation points. Great location too! Thanks for sharing the slides.

    1 · June 7, 2013

  • Michael J.

    Great talk! Thanks again to the sponsors and Rick.

    1 · June 7, 2013

  • Jose F.

    What was the name of the Chrome extension that Aaron mentioned? Spot<something>

    June 6, 2013

    • Matthew W.

      Are you thinking of "SPOF-o-matic"­?

      June 6, 2013

    • Jose F.

      Yes, that's it! Thanks

      June 6, 2013

  • Sam

    Very educational.

    June 6, 2013

  • Vinh Quang T.

    Great presentation, great location, but the texts on the slides are too small to see.

    1 · June 6, 2013

  • Dean Q.

    Priceless presentation. Thank you for presenting.

    2 · June 6, 2013

  • Ben Z.

    RoR developer. Hoping to make friends.

    June 6, 2013

  • Dmitry L.

    Sorry, last moment changes.

    June 6, 2013

  • Chuck S.

    sorry, i have to stay late this eve.

    June 6, 2013

  • Michael J.

    Bike parking situation? :)

    June 5, 2013

  • Stephen

    Please post the slides for those of us who can't make it

    June 5, 2013

    • Rick V.

      Stephen, check these comments for a link to the slides following the talk.

      1 · June 5, 2013

  • Jesus F. T.


    1 · June 3, 2013

  • A former member
    A former member

    Excellent topic but I'll be missing it since I will be out of town. Hope this presentation is recorded.

    1 · May 27, 2013

  • Dmitry L.

    antipatterns lover!

    1 · May 24, 2013

  • A former member
    A former member

    This is an EXCELLENT topic! But I'll be out of town. Hope this will be recorded - Thanks

    1 · May 24, 2013

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