178019 2017-10-06 10:54:29 -0700 Layout test http/tests/cache/disk-cache/disk-cache-validation-no-body.html is timing out. 2017-10-09 17:37:36 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED CONFIGURATION CHANGED https://bugs.webkit.org/show_bug.cgi?id=149087 InRadar P2 Normal --- 1 jlewis3 webkit-unassigned ap cdumez jiewen_tan joepeck koivisto ryanhaddad webkit-bug-importer oldest_to_newest 1357664 0 jlewis3 2017-10-06 10:54:29 -0700 http/tests/cache/disk-cache/disk-cache-validation-no-body.html is timing out on El Capitan Release according to the flakiness dashboard. https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fcache%2Fdisk-cache%2Fdisk-cache-validation-no-body.html https://build.webkit.org/results/Apple%20El%20Capitan%20Release%20WK2%20(Tests)/r222977%20(5032)/results.html https://build.webkit.org/builders/Apple%20El%20Capitan%20Release%20WK2%20(Tests)/builds/5032 This test has already been marked as Flaky on macOS Debug WK2 with related bug. The first timeout on El Capitan Release was with: https://build.webkit.org/results/Apple%20El%20Capitan%20Release%20WK2%20(Tests)/r222866%20(4962)/results.html https://build.webkit.org/builders/Apple%20El%20Capitan%20Release%20WK2%20(Tests)/builds/4962 1358359 1 ap 2017-10-09 12:58:27 -0700 Is this a regression? I thought that all the tests were supposed to pass in release builds now. 1358391 2 jlewis3 2017-10-09 13:25:28 -0700 It looks like after the test was skipped in https://trac.webkit.org/changeset/222994/webkit These tests started to time out as well: http/tests/cache/disk-cache/disk-cache-vary-no-body.html http/tests/cache/disk-cache/disk-cache-vary.html I am testing locally to see if the timeout is still occurring and trying to bisect a possible regression point. 1358399 3 koivisto 2017-10-09 13:41:15 -0700 Looking at that dashboard numbers, the running time of the test on El Capitan bot has been steadily increasing over the last few weeks until it crossed the 30s threshold. 1358401 4 koivisto 2017-10-09 13:42:00 -0700 Maybe the bot is choking on something? 1358405 5 jlewis3 2017-10-09 13:46:48 -0700 The two test I mentioned before also seem to have go through that process of steadily growing in time. 1358407 6 ap 2017-10-09 13:51:46 -0700 Good catch. There is a known kernel bug (fixed in High Sierra) making processes on WebKit test bots launch slower over time, which has particularly noticeable effect on http tests. These bots have uptime of 21 days, which used to be OK. Perhaps something changed that makes the problem manifest faster now. I suggest unskipping the test, rebooting the bots, and watching this test closely for the next few weeks. 1358439 7 jlewis3 2017-10-09 14:49:51 -0700 Unskipped in https://trac.webkit.org/changeset/223071/webkit 1358537 8 ryanhaddad 2017-10-09 17:37:10 -0700 After the unskipping and rebooting, it looks like things are good again on the El Capitan Release bots. Moving this to resolved / config changed. 1358539 9 webkit-bug-importer 2017-10-09 17:37:36 -0700 <rdar://problem/34899513>