Bug 170629 – LayoutTest memory/memory-pressure-simulation.html is a flaky failure

• Component: New Bugs
• Status: NEW

[Ryan Haddad]

LayoutTest memory/memory-pressure-simulation.html is a flaky failure

https://build.webkit.org/builders/Apple%20Sierra%20Debug%20WK2%20(Tests)/builds/359

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=memory%2Fmemory-pressure-simulation.html

--- /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/memory/memory-pressure-simulation-expected.txt
+++ /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/memory/memory-pressure-simulation-actual.txt
@@ -4,11 +4,11 @@
 
 
 Verify that we're not running under memory pressure from the beginning.
-PASS internals.isUnderMemoryPressure is false
+FAIL internals.isUnderMemoryPressure should be false. Was true.
 Begin simulated memory pressure.
 PASS internals.isUnderMemoryPressure is true
 End simulated memory pressure.
-PASS internals.isUnderMemoryPressure is false
+FAIL internals.isUnderMemoryPressure should be false. Was true.
 PASS successfullyParsed is true
 
 TEST COMPLETE

[Ryan Haddad]

This is limited to Sierra Debug WK2 according to the flakiness dashboard.

[Ryan Haddad]

Marked test as flaky in https://trac.webkit.org/changeset/215562/webkit

[Matt Lewis]

The Test has since started failing intermittently on Sierra Release WK2 as well according to the current dashboard.

First release failure was on 5/18 with build:
https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK2%20(Tests)/builds/1578

They have the same diff.
I was unable to reproduce locally.

[Matt Lewis]

Marked the test as flaky on release as well:
https://trac.webkit.org/changeset/220874/webkit

[Matt Lewis]

This has started to occur on High Sierra as well:
https://build.webkit.org/results/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/r227607%20(2508)/results.html

Marked as flaky: https://trac.webkit.org/changeset/227613/webkit

[Eric Hutchison]

This test continues to be flaky on Catalina, BigSur, and Monterey: https://results.webkit.org/?suite=layout-tests&test=memory/memory-pressure-simulation.html

with same diff.

Moving test expectations to include wk1: https://trac.webkit.org/changeset/282977/webkit

[Radar WebKit Bug Importer]

<rdar://problem/83458356>