Rendering Core Weekly Update for Nov 8, 2022

[Stephen Chenney]

Reminder we have a Rendering Core meeting tomorrow (Tuesday)

Nov 8, 2022

Agenda

• Meeting week

• (pdr): ThrottleIntersectionObserver performance results are in!

Upcoming Meetings

• Add any future discussion topics here.

Triage

Team	Untriaged	SLA Misses	Missing Owners
Layout	6	0	2
Style	1	0	0
Editing	15	1	0
Paint	3	0	0
Canvas	2	0	2
DOM	2	0	0

P1 Bugs Exceeding Web Platform SLO

An issue was raised last week about P1 issue counts. The links in the spreadsheet, the table below and the automated stats capture have been updated to capture all bug types, including regressions and security. The automated system was already catching P0 and P1, but the spreadsheet does not and given the rarity of P0 bugs we will not modify the spreadsheet queries. This week's charts do not include the changes. Next week’s will.

Team	Priority 1 Bugs	Num Unassigned	Priority 1 Bugs older than 20 days
Layout	8	2	0
Style	5	3	0
Editing	5	2	1
Paint	5	2	2
Canvas	9	0	9
DOM	0	0	0

Open, Closed and Fixed

Team	Opened	Closed	Fixed
Layout	26	37	26
Style	26	21	11
Editing	7	1	0
Paint	24	20	11
Canvas	6	3	1
DOM	12	20	12

Total Open

Team	Total Open	Delta	Total Assigned	Delta	New WPT	Run Rate
Layout	1262	-10	263	-5	0	6
Style	947	7	259	3	1	0
Editing	1086	9	74	1	0	3
Paint	1440	6	456	1	0	-1
Canvas	376	4	376	181	0	2
DOM	1335	-13	528	-12	0	3

 

Regression Bugs

Team	Priority 1 Regressions	Num Unassigned	Priority 1 Regressions older than 15 days	External Assignee	Expected Slow Fix
Layout	15	5	8	8	0
Style	1	0	0	0	0
Editing	1	1	0	0	0
Paint	1	1	0	0	0
Canvas	3	0	3	2	0
DOM	6	1	3	3	0

Web Test Fail/Skipped Counts

The table below is derived from the actual test expectations for recent try bot runs: linux-blink-rel 81995, mac-11-blink-rel 7693, win10.20h2-blink-rel 4019. Counts include virtual test suites owned by the team or testing stable functionality.

All test failures:

• Linux 3442 down 23

• Mac 3605 down 20

• Win 3321 down 26

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	178	195	179	1	103	192	104	0
Editing	3	3	3	0	6	6	6	0
Layout	32	39	33	0	8	13	9	0
Paint	161	164	147	0	23	31	27	0
Style/All	1389	1431	1317	-9	1090	1091	1091	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:

• 78 new Web tests (including relevant virtual suites)

• 3 Internal

• fast/multicol/monolithic-table-section-crash.html

• virtual/css-highlight-inheritance/wpt_internal/css/css-pseudo/spelling-error-005-crash.html

• wpt_internal/css/css-pseudo/spelling-error-005-crash.html

• 1 Failing:

• external/wpt/html/semantics/popovers/popover-anchor-display.tentative.html

• None Skipped

• Existing tests

• 10 Newly passing

• external/wpt/css/css-images/gradient/ (9 tests related to color spaces feature)

• external/wpt/css/css-ui/compute-kind-widget-no-fallback-props-001.html

• 3 new failures

• external/wpt/css/css-color/color-mix-currentcolor-002.html

• virtual/scalefactor200/fast/forms/file/file-appearance-no-default-width.html

• virtual/threaded/external/wpt/scroll-animations/css/scroll-timeline-dynamic.tentative.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 56 / 56, Failing/Timeout 0 / 0, Skipped 0 / 0

• css-highlight-inheritance: Regressions 1, Passing 281/ 257, Failing/Timeout 34 / 58, Skipped 11 / 11

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

• Stable steady at 99.27%

• Dev climbed to 99.5%

Metrics

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

• Nothing to report.

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

• 
  

Web Developer Metrics (dgrogan, schenney, foolip)

• Interop 2023 is ready for comments!

• Bug Metrics Dashboard feedback requested (Google internal): https://docs.google.com/spreadsheets/d/1F2mhj7sgJSEsOZt3qBbmosPP_6Oh3Pcxca7MhOQ56aI/edit#gid=0

• Stack Overflow analysis underway

• Spec Issue tracking underway