All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=673683

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg5_PMmwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg17O08QgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg1-OpoQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg192TqgkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg1_jaogkM


Bot(s) for this bug's original alert(s):

webrtc-android-tests-nexus9

Hey ivoc,

Would you mind having a look at this alert? I can't find a reasonable culprit CL in the blamelist, and I think you know more about this test than I do :)

Note that all of the alerts are on the Nexus9 bot, so it may very well be a flakey result. (This should not be one of the bots with new devices, as per kjellander's email to the webrtc-perf-sheriffs email list.)

Hmm, that is very strange, the code that's used in this test did not change at all, so I don't see how this can possibly be caused by any changes to our code. I think there is a problem with these tests that causes them to be unreliable (Per had similar problems with the level estimator perf tests). I will try to make some changes to the way these tests work to improve their reliability.

Thanks for looking into it! I have added some more alerts that came in today to the group report.

The following revision refers to this bug:
  https://chromium.googlesource.com/external/webrtc.git/+/930959d261451af05c31db944ecc440808eb89f8

commit 930959d261451af05c31db944ecc440808eb89f8
Author: ivoc <ivoc@webrtc.org>
Date: Wed Dec 14 13:48:16 2016

Improvements to the reliability of the echo detector perf test.

BUG= chromium:673683 

Review-Url: https://codereview.webrtc.org/2568883004
Cr-Commit-Position: refs/heads/master@{#15606}

[modify] https://crrev.com/930959d261451af05c31db944ecc440808eb89f8/webrtc/modules/audio_processing/residual_echo_detector_complexity_unittest.cc

I hope this change will make the perf stats more robust, however, since this modifies the behavior of the stats it's expected to see a lot of alerts popping up.