187931 2018-07-23 15:53:26 -0700 REGRESSION: Multiple svg layout tests have become flaky timeouts 2018-08-06 08:57:25 -0700 1 1 1 Unclassified WebKit Animations Other Unspecified Unspecified NEW InRadar P2 Normal --- 1 ryanhaddad webkit-unassigned dino realdawei simon.fraser tsavell webkit-bug-importer oldest_to_newest 1444447 0 ryanhaddad 2018-07-23 15:53:26 -0700 Multiple svg layout tests have timed out at least once on macOS bots in the past 2 days: svg/animations/animations-paused-in-background-page-iframe.html svg/animations/deferred-insertion.html svg/animations/change-target-while-animating-SVG-property.html svg/animations/multiple-animations-ending.html svg/animations/smil-leak-dynamically-added-element-instances.svg svg/animations/svglength-additive-from-by-4.html svg/animations/svgenum-animation-10.html svg/animations/svg-two-animate-elements-crash.svg svg/animations/svgenum-animation-3.html svg/animations/single-values-animation.html svg/animations/svgangle-animation-grad-to-rad.html svg/animations/force-use-shadow-tree-recreation-while-animating.html svg/animations/non-additive-type-by-animation.html https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=svg%2Fanimations%2F 1444450 1 ryanhaddad 2018-07-23 15:58:17 -0700 Perhaps related, I noticed that svg/zoom/page/zoom-svg-through-object-with-percentage-size.xhtml was reported as missing expected results on this test run, but the test isn't new and does indeed have an iOS expected.txt file: https://build.webkit.org/results/Apple%20iOS%2011%20Simulator%20Release%20WK2%20(Tests)/r234110%20(6375)/results.html 1444451 2 ryanhaddad 2018-07-23 15:59:57 -0700 One of the earliest timeouts I see was with svg/animations/end-event-syncbase.svg, which blames https://trac.webkit.org/log/?verbose=on&rev=234078&stop_rev=234077 https://build.webkit.org/builders/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/builds/5757 1444455 3 ryanhaddad 2018-07-23 16:00:54 -0700 This change was related to animations: "Remove completed animations from GraphicsLayer, thus avoiding excessive backing store allocation" https://trac.webkit.org/changeset/234073/webkit 1444466 4 simon.fraser 2018-07-23 16:13:21 -0700 (In reply to Ryan Haddad from comment #3) > This change was related to animations: > "Remove completed animations from GraphicsLayer, thus avoiding excessive > backing store allocation" > https://trac.webkit.org/changeset/234073/webkit That shouldn't have any impact on SVG animations. 1445597 5 webkit-bug-importer 2018-07-26 17:08:36 -0700 <rdar://problem/42643928> 1448128 6 tsavell 2018-08-06 08:57:25 -0700 After further testing and help from Johnathan, I found that running the directories storage/indexeddb/modern/ and svg/ in succession with one test runner reproduced the issue. I bisected the storage/indexeddb/modern/ directory down to find that storage/indexeddb/modern/opendatabase-after-storage-crash.html is the casue of the flakey timouts. If you run this test in front tof the svg/ directory there is a chance of a timout occuring. Test Command Line: Run-webkit-tests --root testbuild-234505 storage/indexeddb/modern/opendatabase-after-storage-crash.html svg/ --child-processes 1 -v I then marked the test as skip locally and ran both directories again 10 times with no timouts occuring. Next steps are to mark the test as skip for now and work to find a proper solution.