1843878 - Intermittent dom/svg/test/test_non-scaling-stroke.html | single tracking bug

Status: RESOLVED FIXED

(Core :: SVG, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: ctuns [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=422870893&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/aEEVOAijQx-rGq70J-zKfw/runs/0/artifacts/public/logs/live_backing.log

---

[task 2023-07-17T15:11:44.121Z] 15:11:44     INFO - TEST-START | dom/svg/test/test_non-scaling-stroke.html
[task 2023-07-17T15:11:44.199Z] 15:11:44     INFO - TEST-INFO | started process screenshot
[task 2023-07-17T15:11:44.326Z] 15:11:44     INFO - TEST-INFO | screenshot: exit 0
[task 2023-07-17T15:11:44.329Z] 15:11:44     INFO - TEST-UNEXPECTED-FAIL | dom/svg/test/test_non-scaling-stroke.html | Testing mouse event on non-scaling-stroke click event fired - got false, expected true
[task 2023-07-17T15:11:44.329Z] 15:11:44     INFO -     SimpleTest.is@SimpleTest/SimpleTest.js:507:14
[task 2023-07-17T15:11:44.329Z] 15:11:44     INFO -     _checkExpectedEvent@SimpleTest/EventUtils.js:1768:7
[task 2023-07-17T15:11:44.329Z] 15:11:44     INFO -     synthesizeMouseExpectEvent@SimpleTest/EventUtils.js:1800:22
[task 2023-07-17T15:11:44.329Z] 15:11:44     INFO -     startTest/<@dom/svg/test/test_non-scaling-stroke.html?currentTestURL=dom%2Fsvg%2Ftest%2Ftest_non-scaling-stroke.html&closeWhenDone=1&showTestReport=false&expected=pass:38:35
[task 2023-07-17T15:11:44.329Z] 15:11:44     INFO -     SimpleTest.waitForFocus/<@SimpleTest/SimpleTest.js:1056:13
[task 2023-07-17T15:11:44.330Z] 15:11:44     INFO - GECKO(2496) | MEMORY STAT | vsize 2103721MB | vsizeMaxContiguous 68570454MB | residentFast 84MB | heapAllocated 11MB
[task 2023-07-17T15:11:44.330Z] 15:11:44     INFO - TEST-OK | dom/svg/test/test_non-scaling-stroke.html | took 113ms
[task 2023-07-17T15:11:44.331Z] 15:11:44     INFO - GECKO(2496) | [Parent 6996, IPC I/O Parent] WARNING: DuplicateHandle failed for handle 0 in TransferHandles: file /builds/worker/checkouts/gecko/ipc/chromium/src/chrome/common/ipc_channel_win.cc:621
[task 2023-07-17T15:11:44.332Z] 15:11:44     INFO - GECKO(2496) | [GPU 2752, IPC I/O Child] WARNING: pipe error: 232: file /builds/worker/checkouts/gecko/ipc/chromium/src/chrome/common/ipc_channel_win.cc:443
[task 2023-07-17T15:11:44.332Z] 15:11:44     INFO - TEST-START | dom/svg/test/test_nonAnimStrings.xhtml

Comment 1

[Intermittent Failures Robot]

7 failures in 3520 pushes (0.002 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 5
• mozilla-central: 2

Platform and build breakdown:

• windows11-64-2009-qr: 3
  • opt: 2
  • debug: 1
• windows11-32-2009-shippable-qr: 2
  • opt: 2
• windows11-32-2009-qr: 2
  • opt: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1843878&startday=2023-07-17&endday=2023-07-23&tree=all

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 3

[Iulian Moraru]

This started failing on tier 1: https://treeherder.mozilla.org/logviewer?job_id=470252048&repo=mozilla-beta&lineNumber=13454 with this failure line: TEST-UNEXPECTED-FAIL | dom/svg/test/test_non-scaling-stroke.html | Test timed out. -

Comment 4

[Robert Longson [:longsonr]]

https://treeherder.mozilla.org/jobs?repo=try&revision=e7766d4503656be576d7c0d9774ea5eb1403855f

Comment 5

[Robert Longson [:longsonr]]

Attachment: Bug 1843878 - just wait for focus r=dholbert

Comment 6

[Daniel Holbert [:dholbert]]

The screenshot from the recent failure log here in comment 3 is:
https://firefoxci.taskcluster-artifacts.net/VFnwWVr7Sa2qJEPe_xNxIQ/0/public/test_info/mozilla-test-fail-screenshot_q0yr4mtz.png

It shows that the system is showing the macOS screensaver, i.e. it looks like the system has become locked or we've triggered the screensaver timeout. This isn't the fault of this particular mochitest; presumably any test that requires focus will fail under these conditions.... Probably we need to adjust our CI stuff to make sure this doesn't happen?

Comment 7

[Daniel Holbert [:dholbert]]

jmaher do you know if/how we avoid triggering the screensaver shown in my screenshot linked in comment 6?

Comment 8

[Robert Longson [:longsonr]]

Something like https://medium.com/@rksingh0399/how-to-turn-off-screen-saver-in-mac-using-terminal-command-a3d3a84d7a6a perhaps?

Comment 9

[Daniel Holbert [:dholbert]]

FWIW looking at the timeline in the log:, it looks like 28min elapsed (14:27 to 14:55) between the start of the log and the point at which the failing test was started (at which point the screensaver was presumably up):

[taskcluster 2024-08-13T14:27:48.881Z] Worker Type (releng-hardware/gecko-t-osx-1015-r8) settings:
[...]
[task 2024-08-13T14:55:44.730Z] 14:55:44     INFO - TEST-START | dom/svg/test/test_non-scaling-stroke.html

I'm not sure what the system screensaver timeout threshold is set to, but maybe it's on the order of 25-30min?

(And it looks like longsonr's link shows how to adjust it from the command line.)

Comment 10

[Daniel Holbert [:dholbert]]

The article from comment 8 suggests that we do:

defaults -currentHost write com.apple.screensaver idleTime 0

Looking in the log, I don't see us doing anything like that, which suggests maybe (?) we're just using Apple's default screensaver timeout. The closest thing that I see is this:

INFO - Running pre test command disable_dock with 'defaults write com.apple.dock autohide -bool true'

https://treeherder.mozilla.org/logviewer?job_id=470252048&repo=mozilla-beta&lineNumber=1157-1159

That seems to correspond to this in-tree:
https://searchfox.org/mozilla-central/rev/2455e4d6388cbdeadb44b9633b971a65a98b504c/testing/mozharness/configs/unittests/mac_unittest.py#190-191

Maybe we should add a similar line there to set com.apple.screensaver idleTime?

Comment 11

[Daniel Holbert [:dholbert]]

(I'm a little curious why this hasn't been causing problems more often - my shot-in-the-dark guess is that usually we synthetically move the mouse often enough (in various tests towards the beginning and middle of each mochitest "bucket") to prevent the screensaver from ever triggering at least for the "buckets" of tests that include tests near the end that require focus and would fail if the screensaver had activated)

Comment 12

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/30efcee95b91
just wait for focus r=dholbert

Comment 13

[Daniel Holbert [:dholbert]]

longsonr posted a patch to try to disable the screensaver in bug 1913448, fwiw. That should presumably avoid the failure that we hit in comment 3.

Comment 14

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/30efcee95b91

Comment 15

[Intermittent Failures Robot]

1 failures in 2154 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 1

Platform and build breakdown:

• macosx1015-64-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1843878&startday=2024-08-12&endday=2024-08-18&tree=all

Comment 16

[Daniel Holbert [:dholbert]]

I think we can consider the root cause here fixed by bug 1913448.

Comment 17

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Table

	!fission	cf	headless	http2	http3	no_variant	socketprocess_networking	xorigin
linux2404-x86_64/debug		1/3

• x/y indicates test failures and total runs; only x means number of runs is unknown.

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1843878&startday=2025-07-21&endday=2025-07-27&tree=all