Hello everyone, As has just been written up by Rob Wood, Raptor is now actively being run against Gaia pull requests in order to prevent larger regressions from sneaking in and degrading performance. This is a great proactive measure to keep our device performance at the forefront of development and is a great achievement. I also wanted to inform everyone that we are also improving automation around performance regressions that occur post-commit.
For the past two weeks, we have had a couple script jobs in place that query the cold launch data from the Raptor dashboards [1]. Every day at 7AM PT, the scripts fetch all data from the previous 7 days and are run through some re-tooled graph server code (ported by Will Lachance) to detect any performance regressions. If any regressions are found, Raptor will file appropriate bugs in their respective Bugzilla components, or in the more general Performance component if a regression occurs in multiple applications. In fact, Raptor found its first regression today, if you would like to see an example of what is generated [2]. *Call to Action* If you care about the performance of a particular component, e.g. you are an app owner, peer, or just <3 keep things fast and under control, I encourage you to subscribe in Bugzilla to your respective components. If you only care about the performance of the Clock app, feel free to watch just bugs in the Clock component to keep the noise down. If you want to know more about any performance issue that Raptor finds, you can either watch the Performance component in Firefox OS, or maybe create a saved search for all bugs filed by rap...@mozilla.com. Every regression that Raptor finds is tagged with the "perf" and "regression" keywords, and the bugs contain relevant information about the Gaia and Gecko commits that were involved with the regression to aid in backouts or bisection. If you have a regression come up in an area of your concern, please triage it quickly and lets keep and improve the performance of Firefox OS! [1] http://raptor.mozilla.org [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1170149 Thanks! :Eli Perelman
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