Rendering Core Weekly Update for August 30, 2022

[Stephen Chenney]

We have a meeting tomorrow. On the agenda is a potential change to how our weekly bug analysis is done. See https://docs.google.com/document/d/1-4HEeRfejqAkXZWFLJuNwsQtPlRMPFHB0NycJygEEXI/edit?usp=sharing for more information and the proposals.

There are a few untriaged P1 issues floating around as of the time of this email.

Aug 30, 2022

Agenda

• The usual update.

• [Pdr] Discussion on adjusting bug data reporting (timing and other issues)

Upcoming Meetings

• Add any future discussion topics here.

Triage

Team	Untriaged	SLA Misses	Missing Owners
Layout	35	5	0
Style	24	0	0
Editing	13	1	0
Paint	5	0	0
Canvas	13	2	0
DOM	6	1	0

P1 Bugs Exceeding Web Platform SLO

Team	Priority 1 Bugs	Num Unassigned	Priority 1 Bugs older than 30 days
Layout	21	11	2
Style	1	0	0
Editing	8	6	1
Paint	4	2	0
Canvas	14	2	11
DOM	7	1	4

Open, Closed and Fixed

Team	Opened	Closed	Fixed
Layout	36	26	15
Style	26	17	10
Editing	12	9	7
Paint	20	15	10
Canvas	9	3	3
DOM	29	26	15

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	1199	11	261	1	0	1
Style	937	10	256	4	2	0
Editing	1055	4	71	-1	0	-1
Paint	1446	8	441	2	1	-2
Canvas	369	8	189	3	0	2
DOM	1325	5	536	5	0	0

 

Regression Bugs

Team	Priority 1 Regressions	Num Unassigned	Priority 1 Regressions older than 15 days	External Assignee	Expected Slow Fix
Layout	1	0	0	0	0
Style	2	0	0	1	0
Editing	1	1	0	0	0
Paint	1	0	0	0	0
Canvas	0	0	0	0	0
DOM	2	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 78258, mac-11-blink-rel 7063, win10.20h2-blink-rel 3598. Counts include virtual test suites owned by the team or testing stable functionality.

All test failures:

• Linux 3385 down 173

• Mac 3430 down 183

• Win 3175 down 166

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	167	178	164	2	111	199	112	0
Editing	0	0	0	0	49	49	49	0
Layout	31	38	32	-2	8	13	9	0
Paint	178	191	169	4	26	34	32	0
Style/All	1376	1462	1342	4	1153	1154	1154	0

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:

• 37 new Web tests (including relevant virtual suites)

• 2 Internal

• wpt_internal/css/css-anchor-position/anchor-name-003.html

• wpt_internal/css/css-anchor-position/anchor-position-multicol-003.html

• 5 Failing:

• external/wpt/css/css-color-adjust/rendering/dark-color-scheme/color-scheme-iframe-preferred.html (+ virtual)

• external/wpt/css/css-conditional/at-supports-font-format-001.html (Needs Triage)

• external/wpt/css/css-conditional/at-supports-font-tech-001.html (Needs Triage)

• external/wpt/html/semantics/embedded-content/the-img-element/image-loading-lazy-zero-intersection-area.html

• None Skipped

• Existing tests

• 4 Newly passing

• external/wpt/css/mediaqueries/mq-invalid-media-type-layer-001.html

• fragmentation/fragmented-rowspan-alignment.html

• fragmentation/fragmented-rowspan.html

• fragmentation/table-overlapping-rowspan.html

• 7 new failures

• compositing/reflections/nested-reflection-transformed.html

• compositing/reflections/nested-reflection-transformed2.html

• external/wpt/css/css-multicol/multicol-overflow-transform-001.html

• fast/css/transformed-mask.html

• fast/table/percent-widths-float.html

• paint/invalidation/reflection/reflection-with-rotation.html (+ virtual)

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 23 / 23, Skipped 4 / 4

• 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 32 / 55, Skipped 11 / 11

• 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 steady at 99.27%

Metrics

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

• Nothing to report.

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

• Updates biweekly.

Web Developer Metrics (dgrogan, schenney, foolip)

• Improved viewing of Bug Components on the Bug Metrics Dashboard

• Started tracking change in star count per bug per day

• Plan in place for exporting comment metadata for monorail snapshots

• Interop 2023 Planning