Bug: Intermittent toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2023-07-19 20:26:24+00:00
Resolved: 2024-04-22 12:04:30+00:00

**Filed by:** ctuns [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=423174531&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/T62KzYesQHCLXjjoKEkX9w/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2023-07-19T17:49:30.705Z] 17:49:30     INFO - TEST-PASS | toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | "undefined" == "undefined" - 
[task 2023-07-19T17:49:30.705Z] 17:49:30     INFO - TEST-PASS | toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | 0 == 0 - 
[task 2023-07-19T17:49:30.706Z] 17:49:30     INFO - Buffered messages finished
[task 2023-07-19T17:49:30.706Z] 17:49:30     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | Test timed out - 
[task 2023-07-19T17:49:30.707Z] 17:49:30     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | waiting for vsync to be disabled - timed out after 50 tries. - false == true - {"filename":"chrome://mochikit/content/browser-test.js","name":"ensureVsyncDisabled","sourceId":542,"lineNumber":603,"columnNumber":19,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest","sourceId":542,"lineNumber":768,"columnNumber":18,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"timeoutFn","sourceId":542,"lineNumber":1437,"columnNumber":18,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"Tester_execTest","sourceId":542,"lineNumber":1379,"columnNumber":45,"sourceLine":"","asyncCause":"setTimeout handler","asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest/<","sourceId":542,"lineNumber":1120,"columnNumber":14,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/tests/SimpleTest/SimpleTest.js","name":"SimpleTest.waitForFocus/<","sourceId":566,"lineNumber":1056,"columnNumber":13,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":null,"formattedStack":"SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"nextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"setTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"timeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"async*nextTest@chrome://mochikit/content/browser-test.js:768:18\ntimeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"ensureVsyncDisabled@chrome://mochikit/content/browser-test.js:603:19\nasync*nextTest@chrome://mochikit/content/browser-test.js:768:18\ntimeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}}
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - Stack trace:
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:ensureVsyncDisabled:603
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:nextTest:768
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:timeoutFn:1437
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - setTimeout handler*chrome://mochikit/content/browser-test.js:Tester_execTest:1379
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1120
[task 2023-07-19T17:49:30.714Z] 17:49:30     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1056
[task 2023-07-19T17:49:30.715Z] 17:49:30     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | vsync remained enabled at the end of the test. Is there an animation still running? Consider talking to the performance team for tips to solve this. - false == true - {"filename":"chrome://mochikit/content/browser-test.js","name":"ensureVsyncDisabled","sourceId":542,"lineNumber":604,"columnNumber":19,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest","sourceId":542,"lineNumber":768,"columnNumber":18,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"timeoutFn","sourceId":542,"lineNumber":1437,"columnNumber":18,"sourceLine":"","asyncCause":null,"asyncCaller":{"filename":"chrome://mochikit/content/browser-test.js","name":"Tester_execTest","sourceId":542,"lineNumber":1379,"columnNumber":45,"sourceLine":"","asyncCause":"setTimeout handler","asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/browser-test.js","name":"nextTest/<","sourceId":542,"lineNumber":1120,"columnNumber":14,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":{"filename":"chrome://mochikit/content/tests/SimpleTest/SimpleTest.js","name":"SimpleTest.waitForFocus/<","sourceId":566,"lineNumber":1056,"columnNumber":13,"sourceLine":"","asyncCause":null,"asyncCaller":null,"caller":null,"formattedStack":"SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"nextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"setTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"timeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"formattedStack":"async*nextTest@chrome://mochikit/content/browser-test.js:768:18\ntimeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}},"caller":null,"formattedStack":"ensureVsyncDisabled@chrome://mochikit/content/browser-test.js:604:19\nasync*nextTest@chrome://mochikit/content/browser-test.js:768:18\ntimeoutFn@chrome://mochikit/content/browser-test.js:1437:18\nsetTimeout handler*Tester_execTest@chrome://mochikit/content/browser-test.js:1379:45\nnextTest/<@chrome://mochikit/content/browser-test.js:1120:14\nSimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1056:13\n","nativeSavedFrame":{}}
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - Stack trace:
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:ensureVsyncDisabled:604
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:nextTest:768
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:timeoutFn:1437
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - setTimeout handler*chrome://mochikit/content/browser-test.js:Tester_execTest:1379
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1120
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1056
[task 2023-07-19T17:49:30.722Z] 17:49:30     INFO - GECKO(4684) | MEMORY STAT | vsize 2104451MB | vsizeMaxContiguous 70030201MB | residentFast 338MB | heapAllocated 103MB
[task 2023-07-19T17:49:30.723Z] 17:49:30     INFO - TEST-OK | toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | took 50552ms
[task 2023-07-19T17:49:30.724Z] 17:49:30     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-07-19T17:49:30.724Z] 17:49:30     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/pdfjs/test/browser_pdfjs_load_telemetry.js | Found a tab after previous test timed out: about:blank - 
[task 2023-07-19T17:49:30.725Z] 17:49:30     INFO - checking window state
[task 2023-07-19T17:49:30.725Z] 17:49:30     INFO - TEST-START | toolkit/components/pdfjs/test/browser_pdfjs_main.js
```