Rendering Core Weekly Update for October 4, 2022

[Stephen Chenney]

No meeting this week.

Oct 4, 2022

Agenda

• No meeting this week.

Upcoming Meetings

• Add any future discussion topics here.

Triage

Layout is falling behind on some security issues as of Friday evening.

Team	Untriaged	SLA Misses	Missing Owners
Layout	22	5	1
Style	12	0	0
Editing	20	0	0
Paint	15	0	0
Canvas	11	0	0
DOM	4	0	0

P1 Bugs Exceeding Web Platform SLO

Team	Priority 1 Bugs	Num Unassigned	Priority 1 Bugs older than 30 days
Layout	8	3	3
Style	0	0	0
Editing	4	1	2
Paint	5	1	2
Canvas	16	1	14
DOM	3	2	3

Open, Closed and Fixed

Team	Opened	Closed	Fixed
Layout	44	42	20
Style	19	27	11
Editing	13	7	5
Paint	31	32	12
Canvas	14	12	5
DOM	24	37	13

Total Open

Team	Total Open	Delta	Total Assigned	Delta	New WPT	Run Rate
Layout	1277	4	284	-2	2	9
Style	945	-7	262	-4	0	-1
Editing	1074	8	70	1	0	1
Paint	1459	10	460	8	1	0
Canvas	374	4	190	-3	0	2
DOM	1334	-4	531	-9	0	1

 

Regression Bugs

Team	Priority 1 Regressions	Num Unassigned	Priority 1 Regressions older than 15 days	External Assignee	Expected Slow Fix
Layout	6	1	0	4	0
Style	4	0	2	2	0
Editing	0	0	0	0	0
Paint	3	1	0	0	0
Canvas	1	0	1	0	0
DOM	3	0	2	2	0

Web Test Fail/Skipped Counts

The table below is derived from the actual test expectations for recent try bot runs: linux-blink-rel 80007, mac-11-blink-rel 7437, win10.20h2-blink-rel 3858. Counts include virtual test suites owned by the team or testing stable functionality.

wpt/editing was added to the counts.

All test failures:

• Linux 3196 down 66

• Mac 3407 down 63

• Win 3155 down 60

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

	Failing				Skipped
Team	Linux	Mac	Win	Delta	Linux	Mac	Win	Delta
Canvas	10	12	12	0	2	2	2	0
DOM	176	193	177	4	103	191	104	0
Editing	2	2	2	-19	6	6	6	-43
Layout	32	39	33	0	8	13	9	0
Paint	158	166	151	7	23	31	27	1
Style/All	1313	1394	1277	-65	1103	1104	1104	-5

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:

• 186 new Web tests (including relevant virtual suites)

• 2 Internal

• shadow-dom/focus-navigation/focus-navigation-web-component-input-type-radio.html

• wpt_internal/css/css-backgrounds/border-image-repeat-space-1-zoomed.html

• 2 Failing:

• external/wpt/editing/other/select-all-and-delete-in-html-element-having-contenteditable.html

• external/wpt/shadow-dom/focus-navigation/focus-navigation-web-component-input-type-radio.html

• 6 Skipped

• external/wpt/editing/manual/* (6 tests)

• Existing tests

• 86 Newly passing

• external/wpt/css/css-color/ (68 tests)

• external/wpt/css/CSS2/floats-clear/clearance-containing-fragmented-float-crash.html

• external/wpt/css/css-grid/alignment/… (6 tests)

• external/wpt/css/css-sizing/aspect-ratio/flex-aspect-ratio-004.html

• printing/block-with-overflow-in-bottom-aligned-fixedpos.html (+ virtual)

• printing/fixed-positioned-headers-and-footers-larger-than-page.html (+ virtual)

• printing/flexbox-with-overflow-in-bottom-aligned-fixedpos.html (+ virtual)

• printing/multi-page-background.html (+ virtual)

• printing/page-break-avoid.html (+ virtual)

• 10 new failures

• external/wpt/css/css-grid/alignment/grid-container-baseline-001.html

• external/wpt/css/css-images/gradient/gradient-eval-00[5,7,8,9].html (4 tests)

• external/wpt/css/css-sizing/aspect-ratio/flex-aspect-ratio-002.html

• external/wpt/html/semantics/embedded-content/media-elements/loading-the-media-resource/… (3 tests)

• external/wpt/svg/struct/reftests/currentScale-change-repaint.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: Need to update tracking for linux only

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

• css-highlight-inheritance: Regressions 1, Passing 276/ 253, Failing/Timeout 34 / 57, Skipped 11 / 11

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

• Stable steady at 99.27%

• Dev steady at 99.26%

Metrics

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

• Nothing to report

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

• 
  

Web Developer Metrics (dgrogan, schenney, foolip)

• Explored Stack Overflow:

• When we fix a known common problem, the 2nd answer to the canonical question tends to be the newly launched solution, and it grows in votes to approach the old best answer. The second best answer also tends to be a popular old answer that was updated with the new technique.

• Views of the canonical page for a problem tend to grow continuously, e.g. aspect-ratio, flex-gap