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My monthly review of Firefox for Android performance measurements. This month’s highlights:

 – Eideticker for Android is back!

 – small regression in ts_paint

 – small improvement in tp4m

 – small regression in time to throbber start / stop


This section tracks Perfomatic graphs from graphs.mozilla.org for mozilla-central builds of Firefox for Android, for Talos tests run on Android 4.0 Opt. The test names shown are those used on tbpl. See https://wiki.mozilla.org/Buildbot/Talos for background on Talos.


This test is not currently run on Android 4.0.


Measure of “checkerboarding” during simulation of real user interaction with page. Lower values are better.

12 (start of period) – 12 (end of period)

There was a temporary regression in this test for much of the month, but it seems to be resolved now.


Panning performance test. Value is square of frame delays (ms greater than 25 ms) encountered while panning. Lower values are better.

50000 (start of period) – 50000 (end of period)


Performance of history and bookmarks’ provider. Reports time (ms) to perform a group of database operations. Lower values are better.

520 (start of period) – 520 (end of period).


An svg-only number that measures SVG rendering performance. About half of the tests are animations or iterations of rendering. This ASAP test (tsvgx) iterates in unlimited frame-rate mode thus reflecting the maximum rendering throughput of each test. The reported value is the page load time, or, for animations/iterations – overall duration the sequence/animation took to complete. Lower values are better.

6300 (start of period) – 6300 (end of period).


Generic page load test. Lower values are better.

940 (start of period) – 850 (end of period).


Improvement noted around August 21.


Startup performance test. Lower values are better.

3650 (start of period) – 3850 (end of period).


Note the slight regression around August 12, and perhaps another around August 27 – bug 1061878.

Throbber Start / Throbber Stop

These graphs are taken from http://phonedash.mozilla.org.  Browser startup performance is measured on real phones (a variety of popular devices).


Note the regression in time to throbber start around August 14 — bug 1056176.


The same regression, less pronounced, is seen in time to throbber stop.


Eideticker for Android is back after a long rest – yahoo!!

These graphs are taken from http://eideticker.mozilla.org. Eideticker is a performance harness that measures user perceived performance of web browsers by video capturing them in action and subsequently running image analysis on the raw result.

More info at: https://wiki.mozilla.org/Project_Eideticker

eide1 eide2 eide3 eide4 eide5