228744 2021-08-03 11:42:51 -0700 REGRESSION (r280541): [ BigSur Debug ] accessibility/roles-computedRoleString.html is timing out 2021-08-06 08:40:38 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified CLOSED FIXED InRadar P2 Normal --- 1 ayumi_kojima webkit-unassigned cdumez cfleizach webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1781675 0 ayumi_kojima 2021-08-03 11:42:51 -0700 accessibility/roles-computedRoleString.html Is timing out on BigSur Debug. History: https://results.webkit.org/?suite=layout-tests&test=accessibility%2Froles-computedRoleString.html No diff is available. 1781676 1 webkit-bug-importer 2021-08-03 11:43:14 -0700 <rdar://problem/81472432> 1781906 2 ayumi_kojima 2021-08-04 09:42:40 -0700 I was able to reproduce the timeout using: run-webkit-tests --iterations 50 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug accessibility/roles-computedRoleString.html Though regression point is clear according to the history, test timed out at TOT, r280534 (seemingly regression started), r280531 (before regression), r279828 (one revision prior to the last change in the test). 1781909 3 ayumi_kojima 2021-08-04 09:47:48 -0700 Updated test expectations while investing https://trac.webkit.org/changeset/280636/webkit 1781947 4 ayumi_kojima 2021-08-04 11:18:20 -0700 It looks like the timeout started at https://trac.webkit.org/changeset/280541/webkit 1781979 5 cdumez 2021-08-04 11:59:14 -0700 Committed r280649 (240260@main): <https://commits.webkit.org/240260@main> 1782386 6 ryanhaddad 2021-08-05 16:10:41 -0700 It appears that this is resolved for Apple Silicon machines, but the test is still timing out on Intel bots. 1782387 7 cdumez 2021-08-05 16:11:19 -0700 Reopening as it seems this is still happening. 1782396 8 cdumez 2021-08-05 16:43:21 -0700 I can reproduce the time out locally. Reverting r280541 does not fix the timeout for me though. As a matter of fact, I don't even see setInnerText() getting called during that test. I am not sure we have the regression point right. 1782402 9 cdumez 2021-08-05 17:11:04 -0700 It looks like the test is very slow. This is why it only times out on debug bots and only on some hardware. I took a trace and we seems to be spending a lot of time under AXLogger::log() (which ends up calling Element::outerHTML()). r280541 probably slowed down setInnerText a bit and it caused the test to time out. In r280649, I updated the test to stop using setInnerText and it made the test a bit faster, allowing it to pass on some hardware but not all. 1782406 10 cdumez 2021-08-05 17:23:40 -0700 Committed r280708 (240303@main): <https://commits.webkit.org/240303@main>