Rendering Core Weekly Update for August 16, 2022

[Stephen Chenney]

Meeting today. Sorry for the delay in getting out the notes. It was due to an infra issue.

Aug 16, 2022

Agenda

• The usual update.

Upcoming Meetings

• Got an idea? Let’s discuss it!

Triage

Team	Untriaged	SLA Misses	Missing Owners
Layout	6	1	0
Style	20	0	0
Editing	6	0	1
Paint	20	2	0
Canvas	12	1	0
DOM	6	2	0

P1 Bugs Exceeding Web Platform SLO

Team	Priority 1 Bugs	Num Unassigned	Priority 1 Bugs older than 30 days
Layout	10	0	2
Style	0	0	0
Editing	5	1	0
Paint	2	0	2
Canvas	12	1	10
DOM	5	0	2

Open, Closed and Fixed

Team	Opened	Closed	Fixed
Layout	27	50	21
Style	21	25	10
Editing	2	6	4
Paint	14	19	11
Canvas	8	12	12
DOM	15	27	12

Total Open

Please take some time to look at your old inactive bugs and give them up for someone else. If you haven’t worked on it for a long time it can’t be super important.

Team	Total Open	Delta	Total Assigned	Delta	New WPT	Run Rate
Layout	1177	-22	256	-4	0	-1
Style	937	-5	258	-4	5	0
Editing	1054	-4	73	-2	0	-1
Paint	1439	-6	440	-6	0	-3
Canvas	357	0	183	-6	0	2
DOM	1302	-6	528	-10	0	0

 

Regression Bugs

Team	Priority 1 Regressions	Num Unassigned	Priority 1 Regressions older than 15 days	External Assignee	Expected Slow Fix
Layout	0	0	0	0	0
Style	2	1	0	0	0
Editing	0	0	0	0	0
Paint	2	0	1	2	0
Canvas	0	0	0	0	0
DOM	4	0	1	4	0

Web Test Fail/Skipped Counts

The table below is derived from the actual test expectations for recent try bot runs: linux-blink-rel 77583, mac-11-blink-rel 6965, win10.20h2-blink-rel 3524. Counts include virtual test suites owned by the team or testing stable functionality.

All test failures:

• Linux 3406 up 22

• Mac 3655 down 29

• Win 3359 up 16

Delta in the table below is the rounded average of the platforms.

	Failing				Skipped
Team	Linux	Mac	Win	Delta	Linux	Mac	Win	Delta
Canvas	13	15	15	0	2	2	2	0
DOM	164	179	160	19	101	189	102	0
Editing	0	0	0	0	49	49	49	0
Layout	34	41	35	1	8	13	9	0
Paint	174	187	165	-1	30	38	36	0
Style/All	1376	1458	1341	-2	1122	1123	1123	1

Web Test Regressions and Status Changes

When triaging newly added tests, be sure to add necessary information to crbug.com and update the metadata at wpt.fyi.

Test Status Changes, maybe incorrect due to Windows failed test shard:

• 88 new Web tests (including relevant virtual suites)

• 26 Internal

• shadow-dom/focus-navigation/ (19 tests, but also in WPT?)

• wpt_internal/css/css-anchor-position/ (4 tests)

• wpt_internal/css/css-fonts/ (2 tests)

• wpt_internal/html/semantics/embedded-content/the-iframe-element/iframe-parent-changes-baseurl.https.window.html

• 27 Failing:

• external/wpt/css/css-flexbox/intrinsic-size/col-wrap-00[1-3,5-9].html (8 tests)

• external/wpt/shadow-dom/focus-navigation/ (19 tests)

• 1 Skipped

• external/wpt/css/css-transitions/render-blocking/no-transition-from-ua-to-blocking-stylesheet.html

• Existing tests

• 13 Newly passing

• external/wpt/css/css-break/iframe-in-repeated-table-header-crash.html

• external/wpt/css/css-contain/contain-paint-clip-015.html

• external/wpt/css/css-contain/contain-paint-clip-016.html

• external/wpt/css/css-flexbox/flexbox-break-request-horiz-001a.html

• external/wpt/css/css-flexbox/flexbox-break-request-horiz-001b.html

• external/wpt/css/css-flexbox/flexbox-break-request-vert-001a.html

• external/wpt/css/css-flexbox/flexbox-break-request-vert-001b.html

• external/wpt/css/css-multicol/multicol-span-all-005.html

• external/wpt/css/css-text/hyphens/hyphenate-character-001.html

• external/wpt/css/css-text/hyphens/hyphenate-character-003.html

• external/wpt/css/css-text/hyphens/hyphenate-character-004.html

• external/wpt/css/css-text/hyphens/hyphens-vertical-004.html

• virtual/layout_ng_printing/printing/overflow-auto.html

• 4 new failures

• external/wpt/css/css-text/text-transform/text-transform-capitalize-018.html

• external/wpt/css/css-transitions/transition-base-response-002.html

• external/wpt/fullscreen/api/document-fullscreen-enabled-cross-origin.sub.html (Needs Triage)

• fragmentation/repeating-thead-under-repeating-thead.html

Launch Test Status

Regressions are how many fail in the virtual suite while passing in the default.

Passing compares the virtual / default passing test counts.

Failing/Timeout compares virtual / default failing or timeout results

Skipped compares skipped count for virtual / default

• backface-visibility-interop: Regressions 3, Passing 2145 / 2145, Failing/Timeout 22 / 22, Skipped 4 / 4

• controls-refresh-hc: Regressions 0, Passing 55 / 55, Failing/Timeout 0 / 0, Skipped 0 / 0

• css-highlight-inheritance: Regressions 1, Passing 272 / 249, Failing/Timeout 34 / 57, Skipped 11 / 11

• css-modules: Regressions 0, Passing 14 / 14, Failing/Timeout 0 / 0, Skipped 0 / 0

• layout_ng_printing: Regressions 25, Passing 98 / 124, Failing/Timeout 27 / 2, Skipped 1 / 0

• Percentage of NG Blocks over time, Windows 50th percentile, Stable and Dev

• Stable steady at 99.27%

• Dev is noisy but maybe aligned with Stable now at 99.27%

Metrics

Reminder to add any performance wins to go/wp-perfy.

• Many changes due a fix for Pre/Post FCP in subframes. Interestingly, some things go up and others down due to this.

• A couple of other outstanding alerts but nothing serious.

EngProd (vivianz, weizhong, jonathanjlee,preethim,jiesheng,troebst)

•