All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=709356

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyqwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In5XZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNi1sb2xsaXBvcC93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX3JlbmRlci9TaW1wbGVFY2hvRGV0ZWN0b3JWaWFBcG0MCxINU3RvcHBhZ2VBbGVydBj1eQw,agxzfmNocm9tZXBlcmZyrAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In9XZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNi1sb2xsaXBvcC93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX2NhcHR1cmUvU2ltcGxlRWNob0RldGVjdG9yVmlhQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZyowELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InZXZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX2NhcHR1cmUvU2ltcGxlRWNob0RldGVjdG9yVmlhQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZyqgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In1XZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX3JlbmRlci9FY2hvRGV0ZWN0b3JBbmREZWZhdWx0RGVza3RvcEFwbQwLEg1TdG9wcGFnZUFsZXJ0GPV5DA,agxzfmNocm9tZXBlcmZyqwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In5XZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX2NhcHR1cmUvRWNob0RldGVjdG9yQW5kRGVmYXVsdERlc2t0b3BBcG0MCxINU3RvcHBhZ2VBbGVydBj1eQw,agxzfmNocm9tZXBlcmZyqgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In1XZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX2NhcHR1cmUvRWNob0RldGVjdG9yQW5kRGVmYXVsdE1vYmlsZUFwbQwLEg1TdG9wcGFnZUFsZXJ0GPV5DA,agxzfmNocm9tZXBlcmZyqQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InxXZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX3JlbmRlci9FY2hvRGV0ZWN0b3JBbmREZWZhdWx0TW9iaWxlQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZyogELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InVXZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS93ZWJydGNfcGVyZl90ZXN0cy9lY2hvX2RldGVjdG9yX2NhbGxfZHVyYXRpb25zX3JlbmRlci9TaW1wbGVFY2hvRGV0ZWN0b3JWaWFBcG0MCxINU3RvcHBhZ2VBbGVydBj1eQw,agxzfmNocm9tZXBlcmZyqgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In1XZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS1raXRrYXQvd2VicnRjX3BlcmZfdGVzdHMvZWNob19kZXRlY3Rvcl9jYWxsX2R1cmF0aW9uc19jYXB0dXJlL1NpbXBsZUVjaG9EZXRlY3RvclZpYUFwbQwLEg1TdG9wcGFnZUFsZXJ0GPV5DA,agxzfmNocm9tZXBlcmZysQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IoMBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czUta2l0a2F0L3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfcmVuZGVyL0VjaG9EZXRlY3RvckFuZERlZmF1bHRNb2JpbGVBcG0MCxINU3RvcHBhZ2VBbGVydBj1eQw,agxzfmNocm9tZXBlcmZysgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IoQBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czUta2l0a2F0L3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfcmVuZGVyL0VjaG9EZXRlY3RvckFuZERlZmF1bHREZXNrdG9wQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZyqQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InxXZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNS1raXRrYXQvd2VicnRjX3BlcmZfdGVzdHMvZWNob19kZXRlY3Rvcl9jYWxsX2R1cmF0aW9uc19yZW5kZXIvU2ltcGxlRWNob0RldGVjdG9yVmlhQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZysgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IoQBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czUta2l0a2F0L3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfY2FwdHVyZS9FY2hvRGV0ZWN0b3JBbmREZWZhdWx0TW9iaWxlQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZyswELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IoUBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czUta2l0a2F0L3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfY2FwdHVyZS9FY2hvRGV0ZWN0b3JBbmREZWZhdWx0RGVza3RvcEFwbQwLEg1TdG9wcGFnZUFsZXJ0GPV5DA,agxzfmNocm9tZXBlcmZyrgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IoABV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czQtamVsbHliZWFuL3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfY2FwdHVyZS9TaW1wbGVFY2hvRGV0ZWN0b3JWaWFBcG0MCxINU3RvcHBhZ2VBbGVydBj1eQw,agxzfmNocm9tZXBlcmZytQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IocBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czQtamVsbHliZWFuL3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfcmVuZGVyL0VjaG9EZXRlY3RvckFuZERlZmF1bHREZXNrdG9wQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZytgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IogBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czQtamVsbHliZWFuL3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfY2FwdHVyZS9FY2hvRGV0ZWN0b3JBbmREZWZhdWx0RGVza3RvcEFwbQwLEg1TdG9wcGFnZUFsZXJ0GPV5DA,agxzfmNocm9tZXBlcmZyrAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In9XZWJSVENQZXJmL3dlYnJ0Yy1hbmRyb2lkLXRlc3RzLW5leHVzNC1qZWxseWJlYW4vd2VicnRjX3BlcmZfdGVzdHMvZWNob19kZXRlY3Rvcl9jYWxsX2R1cmF0aW9uc19yZW5kZXIvU2ltcGxlRWNob0RldGVjdG9yVmlhQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZytQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IocBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czQtamVsbHliZWFuL3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfY2FwdHVyZS9FY2hvRGV0ZWN0b3JBbmREZWZhdWx0TW9iaWxlQXBtDAsSDVN0b3BwYWdlQWxlcnQY9XkM,agxzfmNocm9tZXBlcmZytAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IoYBV2ViUlRDUGVyZi93ZWJydGMtYW5kcm9pZC10ZXN0cy1uZXh1czQtamVsbHliZWFuL3dlYnJ0Y19wZXJmX3Rlc3RzL2VjaG9fZGV0ZWN0b3JfY2FsbF9kdXJhdGlvbnNfcmVuZGVyL0VjaG9EZXRlY3RvckFuZERlZmF1bHRNb2JpbGVBcG0MCxINU3RvcHBhZ2VBbGVydBj1eQw


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

webrtc-android-tests-nexus4-jellybean
webrtc-android-tests-nexus5
webrtc-android-tests-nexus5-kitkat
webrtc-android-tests-nexus6-lollipop

ivoc@: Do you know the reason for these data stoppage alerts?

This seems to be caused by my CL that was intended to improve the reliability of these tests: https://codereview.webrtc.org/2568883004 , but I don't understand why that would cause data stoppage on these Nexus devices. 

kjellander: Do you know why this happened? Could it be that my change increased the run time of the test too much for these devices?

When I look at https://chromeperf.appspot.com/group_report?bug_id=709356 now it only shows webrtc-android-tests-nexus4-jellybean and those devices were removed since they were unreliable and JB wasn't supporting some adb feature that now is required in Chrome infra.

So the data stoppage for that one is expected. I assume the other reported stoppages have recovered and because of that is no longer referencing this bug.

Hmm, I had another look and the data stoppage is still there for other devices (that are still around) like webrtc-android-tests-nexus6-lollipop.

Unfortunately the old logs are no longer there ( bug 712551 ) but a newer run https://build.chromium.org/p/client.webrtc.perf/builders/Android32%20Tests%20%28L%20Nexus6%29/builds/2505/steps/webrtc_perf_tests/logs/stdio only lists this entry matching EchoDetectorAndDefaultDesktopApm:

I 1239.253s run_tests_on_device(ZX1G22LLPD)  RESULT echo_detector_call_durations_total: EchoDetectorAndDefaultDesktopApm= {120025.700000, 1583.092091} us

Is that an expected outcome of your CL?
I don't think a longer runtime as mentioned in #3 should affect this. In the CL it seems you're actually removing these loggings at https://codereview.webrtc.org/2568883004/diff/40001/webrtc/modules/audio_processing/residual_echo_detector_complexity_unittest.cc so I guess this data stoppage is a just a result of that?

Oh, you're right, I guess I did remove that part of the logging, so then this is completely expected. I guess what confused me is that these alerts were all from Android bots, so I assumed it would be something specific to those devices. Anyway, thanks for looking into this!