Bug: Intermittent TV [tier2] browser/base/content/test/performance/browser_startup_syncIPC.js | sync IPC PCompositorBridge::Msg_FlushRendering 1 more times than expected before handling user events -
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2020-02-14 05:02:32+00:00
Resolved: 2020-03-10 17:02:39+00:00

**Filed by:** opoprus [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer.html#?job_id=288784969&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/VpaV11lyRjieJUVVHQmbdg/runs/0/artifacts/public/logs/live_backing.log
**Reftest URL:** https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/VpaV11lyRjieJUVVHQmbdg/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

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[task 2020-02-13T19:13:24.102Z] 19:13:24     INFO - TEST-START | browser/base/content/test/performance/browser_startup_syncIPC.js
[task 2020-02-13T19:13:24.206Z] 19:13:24     INFO - TEST-INFO | started process screentopng
[task 2020-02-13T19:13:24.467Z] 19:13:24     INFO - TEST-INFO | screentopng: exit 0
[task 2020-02-13T19:13:24.467Z] 19:13:24     INFO - Buffered messages logged at 19:13:24
[task 2020-02-13T19:13:24.467Z] 19:13:24     INFO - Entering test bound 
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - whitelisted sync IPC before opening first browser window:
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO -   PLayerTransaction::Msg_GetTextureFactoryIdentifier - at most 1 times
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - TEST-PASS | browser/base/content/test/performance/browser_startup_syncIPC.js | sync IPC PLayerTransaction::Msg_GetTextureFactoryIdentifier happened as many times as expected before opening first browser window - 
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - whitelisted sync IPC before first paint:
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO -   PCompositorBridge::Msg_NotifyChildCreated - at most 1 times
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - TEST-PASS | browser/base/content/test/performance/browser_startup_syncIPC.js | sync IPC PCompositorBridge::Msg_NotifyChildCreated happened as many times as expected before first paint - 
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - whitelisted sync IPC before handling user events:
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO -   PCompositorBridge::Msg_FlushRendering - at most 1 times
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO -   PLayerTransaction::Msg_GetTextureFactoryIdentifier - at most 1 times
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - Buffered messages finished
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_startup_syncIPC.js | sync IPC PCompositorBridge::Msg_FlushRendering 1 more times than expected before handling user events - 
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - Stack trace:
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - chrome://mochikit/content/browser-test.js:test_ok:1292
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_startup_syncIPC.js:null:360
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest/<:1062
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1097
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:925
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<:914
[task 2020-02-13T19:13:24.468Z] 19:13:24     INFO - TEST-PASS | browser/base/content/test/performance/browser_startup_syncIPC.js | sync IPC PLayerTransaction::Msg_GetTextureFactoryIdentifier happened as many times as expected before handling user events - 
[task 2020-02-13T19:13:24.469Z] 19:13:24     INFO - whitelisted sync IPC before becoming idle:
[task 2020-02-13T19:13:24.469Z] 19:13:24     INFO -   PCompositorBridge::Msg_NotifyChildCreated - at most 1 times
[task 2020-02-13T19:13:24.469Z] 19:13:24     INFO - TEST-PASS | browser/base/content/test/performance/browser_startup_syncIPC.js | sync IPC PCompositorBridge::Msg_NotifyChildCreated happened as many times as expected before becoming idle - 
[task 2020-02-13T19:13:25.236Z] 19:13:25     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-02-13T19:13:25.237Z] 19:13:25     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_startup_syncIPC.js | Unexpected sync IPC behavior during startup; open the profile_startup_syncIPC.json artifact in the Firefox Profiler to see what happened - 
[task 2020-02-13T19:13:25.237Z] 19:13:25     INFO - Stack trace:
[task 2020-02-13T19:13:25.237Z] 19:13:25     INFO - chrome://mochikit/content/browser-test.js:test_ok:1292
[task 2020-02-13T19:13:25.239Z] 19:13:25     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_startup_syncIPC.js:null:382
[task 2020-02-13T19:13:25.239Z] 19:13:25     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest/<:1062
[task 2020-02-13T19:13:25.240Z] 19:13:25     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1097
[task 2020-02-13T19:13:25.240Z] 19:13:25     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:925
[task 2020-02-13T19:13:25.241Z] 19:13:25     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<:914
[task 2020-02-13T19:13:25.241Z] 19:13:25     INFO - Leaving test bound 
[task 2020-02-13T19:13:25.262Z] 19:13:25     INFO - GECKO(13060) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2020-02-13T19:13:25.262Z] 19:13:25     INFO - GECKO(13060) | MEMORY STAT | vsize 3192MB | residentFast 522MB | heapAllocated 225MB
[task 2020-02-13T19:13:25.263Z] 19:13:25     INFO - TEST-OK | browser/base/content/test/performance/browser_startup_syncIPC.js | took 1161ms
[task 2020-02-13T19:13:25.291Z] 19:13:25     INFO - checking window state
[task 2020-02-13T19:13:27.545Z] 19:13:27     INFO - GECKO(13060) | Completed ShutdownLeaks collections in process 13283
[task 2020-02-13T19:13:27.565Z] 19:13:27     INFO - GECKO(13060) | Completed ShutdownLeaks collections in process 13222
[task 2020-02-13T19:13:27.568Z] 19:13:27     INFO - GECKO(13060) | Completed ShutdownLeaks collections in process 13129
[task 2020-02-13T19:13:27.626Z] 19:13:27     INFO - GECKO(13060) | Completed ShutdownLeaks collections in process 13122
[task 2020-02-13T19:13:31.546Z] 19:13:31     INFO - GECKO(13060) | Completed ShutdownLeaks collections in process 13060