Closed Bug 1679382 Opened 4 years ago Closed 4 years ago

4.21 - 29.93% netflix PerceptualSpeedIndex / twitch ContentfulSpeedIndex / twitch PerceptualSpeedIndex (linux64-shippable, linux64-shippable-qr) regression on push 4bc0bdcd7889aab2994b4500d41e6e35216e4848 (Sat November 21 2020)

Categories

(Core :: Graphics: WebRender, defect, P3)

Product:
Core
Component:
Graphics: WebRender
Version:
Firefox 85
Type:
defect

Tracking

()

Status:
RESOLVED WONTFIX
Tracking Flags:
Tracking Status
firefox-esr78 --- unaffected
firefox83 --- unaffected
firefox84 --- unaffected
firefox85 --- disabled
firefox86 --- affected

People

(Reporter: Bebe, Unassigned)

References

(Blocks 1 open bug, Regression)

Details

(Keywords: perf, perf-alert, regression)

Perfherder has detected a browsertime performance regression from push 4bc0bdcd7889aab2994b4500d41e6e35216e4848. As author of one of the patches included in that push, we need your help to address this regression.

== Change summary for alert #27807 (as of Sun, 22 Nov 2020 21:07:02 GMT) ==

Regressions:

Ratio Suite Test Platform Options Absolute values (old vs new)
228% twitch FirstVisualChange linux64-shippable cold nocondprof 245.00 -> 803.33
225% twitch FirstVisualChange linux64-shippable-qr cold nocondprof webrender 245.00 -> 796.67
207% twitch FirstVisualChange linux64-shippable nocondprof warm 221.67 -> 680.00
203% twitch FirstVisualChange linux64-shippable-qr nocondprof warm webrender 226.67 -> 686.67
111% google-docs FirstVisualChange linux64-shippable nocondprof warm 321.67 -> 680.00
110% google-docs FirstVisualChange linux64-shippable-qr nocondprof warm webrender 321.67 -> 676.67
109% google-docs FirstVisualChange linux64-shippable-qr cold nocondprof webrender 521.67 -> 1,090.00
106% google-docs FirstVisualChange linux64-shippable cold nocondprof 528.33 -> 1,090.00
57% twitch PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 505.46 -> 794.92
54% twitch PerceptualSpeedIndex linux64-shippable nocondprof warm 513.50 -> 789.17
51% apple FirstVisualChange linux64-shippable cold nocondprof 515.00 -> 776.67
49% apple FirstVisualChange linux64-shippable-qr cold nocondprof webrender 525.00 -> 783.33
44% apple PerceptualSpeedIndex linux64-shippable cold nocondprof 555.12 -> 797.83
43% facebook FirstVisualChange linux64-shippable nocondprof warm 363.33 -> 520.00
43% facebook FirstVisualChange linux64-shippable-qr nocondprof warm webrender 363.33 -> 520.00
42% apple PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 562.96 -> 797.83
38% yandex FirstVisualChange linux64-shippable nocondprof warm 86.67 -> 120.00
37% yandex ContentfulSpeedIndex linux64-shippable nocondprof warm 88.58 -> 121.00
36% yandex FirstVisualChange linux64-shippable-qr nocondprof warm webrender 88.33 -> 120.00
35% yandex SpeedIndex linux64-shippable nocondprof warm 91.79 -> 124.00
34% yandex ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 90.21 -> 121.00
34% facebook SpeedIndex linux64-shippable nocondprof warm 400.38 -> 535.50
33% facebook SpeedIndex linux64-shippable-qr nocondprof warm webrender 401.67 -> 535.33
33% twitch ContentfulSpeedIndex linux64-shippable nocondprof warm 1,043.54 -> 1,388.08
32% facebook PerceptualSpeedIndex linux64-shippable nocondprof warm 429.25 -> 568.33
32% yandex SpeedIndex linux64-shippable-qr nocondprof warm webrender 93.67 -> 124.00
31% facebook PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 431.88 -> 567.33
31% twitch SpeedIndex linux64-shippable nocondprof warm 563.54 -> 737.75
30% twitch ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 1,066.46 -> 1,385.67
30% facebook ContentfulSpeedIndex linux64-shippable nocondprof warm 401.00 -> 520.00
30% apple SpeedIndex linux64-shippable-qr cold nocondprof webrender 618.12 -> 801.17
30% apple SpeedIndex linux64-shippable cold nocondprof 618.17 -> 801.17
29% youtube SpeedIndex linux64-shippable-qr nocondprof warm webrender 788.62 -> 1,016.83
28% youtube SpeedIndex linux64-shippable nocondprof warm 790.75 -> 1,015.83
21% microsoft SpeedIndex linux64-shippable-qr nocondprof warm webrender 242.83 -> 293.92
20% twitch PerceptualSpeedIndex linux64-shippable cold nocondprof 1,170.79 -> 1,402.83
19% twitch PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,184.71 -> 1,404.25
18% yandex PerceptualSpeedIndex linux64-shippable nocondprof warm 124.79 -> 147.67
18% yahoo-news LastVisualChange linux64-shippable cold nocondprof 5,020.00 -> 5,913.33
18% google-docs PerceptualSpeedIndex linux64-shippable cold nocondprof 1,868.25 -> 2,200.25
18% microsoft SpeedIndex linux64-shippable-qr nocondprof warm webrender 240.83 -> 283.25
17% google-docs PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,878.46 -> 2,199.17
17% google-docs ContentfulSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,902.75 -> 2,222.33
17% google-docs ContentfulSpeedIndex linux64-shippable cold nocondprof 1,898.46 -> 2,215.00
17% yandex PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 126.62 -> 147.67
17% google-docs ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 1,334.29 -> 1,555.92
16% microsoft SpeedIndex linux64-shippable nocondprof warm 240.46 -> 279.83
16% facebook FirstVisualChange linux64-shippable-qr cold nocondprof webrender 1,051.67 -> 1,223.33
16% tumblr FirstVisualChange linux64-shippable nocondprof warm 206.67 -> 240.00
16% google-docs ContentfulSpeedIndex linux64-shippable nocondprof warm 1,335.92 -> 1,550.17
16% facebook FirstVisualChange linux64-shippable cold nocondprof 1,050.00 -> 1,213.33
15% google-docs PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 1,372.38 -> 1,571.42
14% youtube SpeedIndex linux64-shippable-qr cold nocondprof webrender 1,174.54 -> 1,343.17
14% facebook LastVisualChange linux64-shippable cold nocondprof 1,470.00 -> 1,680.00
14% microsoft ContentfulSpeedIndex linux64-shippable nocondprof warm 243.33 -> 277.75
14% netflix SpeedIndex linux64-shippable-qr nocondprof warm webrender 483.62 -> 551.42
14% facebook SpeedIndex linux64-shippable-qr cold nocondprof webrender 1,088.54 -> 1,237.25
14% fandom FirstVisualChange linux64-shippable nocondprof warm 246.67 -> 280.00
14% pinterest FirstVisualChange linux64-shippable nocondprof warm 246.67 -> 280.00
14% pinterest FirstVisualChange linux64-shippable-qr nocondprof warm webrender 246.67 -> 280.00
13% microsoft ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 244.50 -> 277.42
13% google-docs PerceptualSpeedIndex linux64-shippable nocondprof warm 1,383.88 -> 1,569.83
13% microsoft ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 247.58 -> 280.58
13% pinterest SpeedIndex linux64-shippable-qr nocondprof warm webrender 541.96 -> 614.00
13% twitch ContentfulSpeedIndex linux64-shippable cold nocondprof 1,198.04 -> 1,356.92
13% apple ContentfulSpeedIndex linux64-shippable cold nocondprof 748.54 -> 847.50
13% facebook SpeedIndex linux64-shippable cold nocondprof 1,086.17 -> 1,229.25
13% netflix SpeedIndex linux64-shippable-qr cold nocondprof webrender 640.46 -> 724.50
13% pinterest PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 540.92 -> 611.75
13% google-slides SpeedIndex linux64-shippable-qr cold nocondprof webrender 797.50 -> 900.92
13% twitch ContentfulSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,212.33 -> 1,368.33
13% apple ContentfulSpeedIndex linux64-shippable-qr cold nocondprof webrender 752.17 -> 848.83
13% yahoo-mail SpeedIndex linux64-shippable nocondprof warm 300.79 -> 339.00
13% pinterest ContentfulSpeedIndex linux64-shippable nocondprof warm 329.33 -> 371.00
13% google-slides SpeedIndex linux64-shippable cold nocondprof 801.38 -> 902.58
13% facebook PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,114.12 -> 1,254.25
12% facebook ContentfulSpeedIndex linux64-shippable cold nocondprof 1,130.92 -> 1,270.42
12% microsoft PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 244.75 -> 274.92
12% yahoo-mail SpeedIndex linux64-shippable-qr nocondprof warm webrender 302.50 -> 339.17
12% pinterest SpeedIndex linux64-shippable nocondprof warm 543.46 -> 608.83
12% youtube FirstVisualChange linux64-shippable-qr nocondprof warm webrender 250.00 -> 280.00
12% pinterest PerceptualSpeedIndex linux64-shippable nocondprof warm 539.08 -> 603.17
12% facebook PerceptualSpeedIndex linux64-shippable cold nocondprof 1,112.58 -> 1,244.08
12% pinterest ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 332.79 -> 371.83
11% netflix SpeedIndex linux64-shippable nocondprof warm 492.33 -> 548.00
11% microsoft PerceptualSpeedIndex linux64-shippable nocondprof warm 241.83 -> 268.42
10% google-slides SpeedIndex linux64-shippable nocondprof warm 540.62 -> 597.08
10% google-slides ContentfulSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,097.00 -> 1,207.75
10% google-slides SpeedIndex linux64-shippable-qr nocondprof warm webrender 539.08 -> 591.25
10% google-slides ContentfulSpeedIndex linux64-shippable cold nocondprof 1,107.88 -> 1,214.58
10% paypal ContentfulSpeedIndex linux64-shippable nocondprof warm 424.67 -> 465.42
9% yahoo-mail ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 321.54 -> 351.42
9% yahoo-mail PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 398.08 -> 434.92
9% tumblr SpeedIndex linux64-shippable nocondprof warm 296.42 -> 323.25
9% yahoo-mail PerceptualSpeedIndex linux64-shippable nocondprof warm 395.62 -> 430.75
9% yahoo-mail ContentfulSpeedIndex linux64-shippable nocondprof warm 322.54 -> 350.17
8% microsoft SpeedIndex linux64-shippable-qr cold nocondprof webrender 512.50 -> 555.33
8% imdb LastVisualChange linux64-shippable nocondprof warm 888.33 -> 960.00
8% google-slides LastVisualChange linux64-shippable-qr nocondprof warm webrender 2,101.67 -> 2,270.00
8% google-slides LastVisualChange linux64-shippable nocondprof warm 2,083.33 -> 2,250.00
8% paypal ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 424.21 -> 457.75
8% microsoft ContentfulSpeedIndex linux64-shippable-qr cold nocondprof webrender 540.00 -> 580.92
7% imdb LastVisualChange linux64-shippable-qr nocondprof warm webrender 888.33 -> 953.33
7% microsoft ContentfulSpeedIndex linux64-shippable cold nocondprof 541.38 -> 579.75
7% google-slides PerceptualSpeedIndex linux64-shippable nocondprof warm 616.92 -> 660.42
7% google-slides PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 948.46 -> 1,015.25
7% microsoft PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 525.50 -> 561.33
7% google-slides PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 619.25 -> 661.00
6% pinterest PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,623.12 -> 1,728.33
6% pinterest ContentfulSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,270.58 -> 1,352.33
6% google-slides PerceptualSpeedIndex linux64-shippable cold nocondprof 954.83 -> 1,015.83
6% yahoo-mail ContentfulSpeedIndex linux64-shippable cold nocondprof 437.58 -> 464.75
6% yahoo-mail ContentfulSpeedIndex linux64-shippable-qr cold nocondprof webrender 439.88 -> 466.58
6% paypal SpeedIndex linux64-shippable-qr nocondprof warm webrender 591.50 -> 625.83
6% fandom ContentfulSpeedIndex linux64-shippable nocondprof warm 277.71 -> 293.67
6% netflix PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 750.62 -> 793.42
6% netflix PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 619.29 -> 654.25
5% tumblr ContentfulSpeedIndex linux64-shippable nocondprof warm 412.83 -> 435.17
5% tumblr PerceptualSpeedIndex linux64-shippable nocondprof warm 385.21 -> 405.75
5% imdb LastVisualChange linux64-shippable cold nocondprof 1,861.67 -> 1,960.00
5% pinterest ContentfulSpeedIndex linux64-shippable cold nocondprof 1,275.50 -> 1,340.33
5% google-sheets SpeedIndex linux64-shippable nocondprof warm 417.46 -> 438.42
5% linkedin PerceptualSpeedIndex linux64-shippable nocondprof warm 1,216.86 -> 1,275.08
5% facebook-redesign ContentfulSpeedIndex linux64-shippable cold nocondprof 1,124.50 -> 1,175.33
4% youtube ContentfulSpeedIndex linux64-shippable nocondprof warm 841.67 -> 877.67
4% youtube ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 839.50 -> 875.42
4% netflix PerceptualSpeedIndex linux64-shippable nocondprof warm 630.92 -> 657.50
4% microsoft LastVisualChange linux64-shippable-qr cold nocondprof webrender 841.67 -> 876.67
4% imdb loadtime linux64-shippable-qr nocondprof warm webrender 850.67 -> 884.75
4% amazon PerceptualSpeedIndex linux64-shippable cold nocondprof 851.54 -> 884.67
4% amazon ContentfulSpeedIndex linux64-shippable cold nocondprof 860.21 -> 893.58
4% amazon PerceptualSpeedIndex linux64-shippable cold nocondprof 852.12 -> 884.83
4% amazon SpeedIndex linux64-shippable cold nocondprof 867.17 -> 898.75
4% linkedin LastVisualChange linux64-shippable nocondprof warm 2,248.33 -> 2,330.00
4% linkedin fcp linux64-shippable-qr nocondprof warm webrender 234.67 -> 243.00
3% amazon SpeedIndex linux64-shippable cold nocondprof 865.29 -> 895.25
3% fandom PerceptualSpeedIndex linux64-shippable nocondprof warm 411.79 -> 425.75
3% linkedin fcp linux64-shippable nocondprof warm 234.25 -> 242.17
3% fandom linux64-shippable nocondprof warm 256.04 -> 264.62
3% linkedin loadtime linux64-shippable nocondprof warm 1,644.10 -> 1,696.00
3% amazon LastVisualChange linux64-shippable cold nocondprof 1,978.33 -> 2,040.00
3% google-mail LastVisualChange linux64-shippable-qr cold nocondprof webrender 3,915.00 -> 4,036.67
3% linkedin SpeedIndex linux64-shippable nocondprof warm 1,126.17 -> 1,160.67
3% linkedin linux64-shippable cold nocondprof 868.29 -> 894.67
3% linkedin SpeedIndex linux64-shippable-qr nocondprof warm webrender 1,126.88 -> 1,157.33
3% outlook SpeedIndex linux64-shippable nocondprof warm 1,106.54 -> 1,135.17
3% linkedin linux64-shippable nocondprof warm 465.51 -> 477.39
2% facebook fcp linux64-shippable nocondprof warm 267.75 -> 274.42
2% linkedin SpeedIndex linux64-shippable-qr cold nocondprof webrender 1,682.67 -> 1,724.50
2% google-slides loadtime linux64-shippable nocondprof warm 1,007.02 -> 1,031.21
2% google-mail LastVisualChange linux64-shippable cold nocondprof 3,925.00 -> 4,016.67
2% linkedin SpeedIndex linux64-shippable cold nocondprof 1,685.12 -> 1,722.50
2% facebook linux64-shippable nocondprof warm 390.41 -> 398.46

Improvements:

Ratio Suite Test Platform Options Absolute values (old vs new)
61% google-mail FirstVisualChange linux64-shippable-qr cold nocondprof webrender 1,350.00 -> 523.33
58% google-mail FirstVisualChange linux64-shippable cold nocondprof 1,435.00 -> 603.33
46% google-mail FirstVisualChange linux64-shippable nocondprof warm 1,050.00 -> 570.00
42% google-mail FirstVisualChange linux64-shippable-qr nocondprof warm webrender 1,045.00 -> 606.67
31% google-mail ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 1,117.54 -> 774.83
30% google-mail ContentfulSpeedIndex linux64-shippable nocondprof warm 1,113.04 -> 776.75
30% google-mail PerceptualSpeedIndex linux64-shippable cold nocondprof 1,637.75 -> 1,146.42
29% google-mail PerceptualSpeedIndex linux64-shippable-qr cold nocondprof webrender 1,630.54 -> 1,153.25
28% google-mail LastVisualChange linux64-shippable-qr nocondprof warm webrender 2,083.33 -> 1,490.00
24% google-mail PerceptualSpeedIndex linux64-shippable nocondprof warm 1,114.33 -> 844.67
23% youtube loadtime linux64-shippable-qr nocondprof warm webrender 1,095.87 -> 842.54
23% google-mail PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 1,113.83 -> 857.83
14% outlook ContentfulSpeedIndex linux64-shippable nocondprof warm 896.21 -> 768.00
11% apple LastVisualChange linux64-shippable-qr nocondprof warm webrender 778.33 -> 693.33
11% apple LastVisualChange linux64-shippable nocondprof warm 780.00 -> 696.67
10% office FirstVisualChange linux64-shippable nocondprof warm 666.67 -> 600.00
10% office FirstVisualChange linux64-shippable-qr nocondprof warm webrender 666.67 -> 600.00
7% google-search loadtime linux64-shippable-qr cold nocondprof webrender 1,107.83 -> 1,030.62
7% office SpeedIndex linux64-shippable nocondprof warm 708.46 -> 660.25
7% office PerceptualSpeedIndex linux64-shippable nocondprof warm 739.54 -> 689.58
7% office PerceptualSpeedIndex linux64-shippable-qr nocondprof warm webrender 739.46 -> 689.83
7% office SpeedIndex linux64-shippable-qr nocondprof warm webrender 708.38 -> 661.67
4% ebay loadtime linux64-shippable nocondprof warm 373.44 -> 360.21
3% yandex fcp linux64-shippable nocondprof warm 49.71 -> 48.17
3% apple ContentfulSpeedIndex linux64-shippable nocondprof warm 314.38 -> 306.33
2% apple ContentfulSpeedIndex linux64-shippable-qr nocondprof warm webrender 314.67 -> 306.83
2% instagram fcp linux64-shippable nocondprof warm 149.33 -> 146.00
2% twitter fcp linux64-shippable nocondprof warm 149.33 -> 146.00
2% instagram fcp linux64-shippable-qr cold nocondprof webrender 182.21 -> 178.17
2% instagram fcp linux64-shippable-qr nocondprof warm webrender 149.33 -> 146.04
2% instagram fcp linux64-shippable cold nocondprof 182.19 -> 178.21
2% ebay fcp linux64-shippable nocondprof warm 182.19 -> 178.29
2% twitter fcp linux64-shippable-qr nocondprof warm webrender 149.50 -> 146.33
2% apple fcp linux64-shippable nocondprof warm 232.00 -> 227.29
2% microsoft fcp linux64-shippable-qr nocondprof warm webrender 182.19 -> 178.50

Details of the alert can be found in the alert summary, including links to graphs and comparisons for each of the affected tests. Please follow our guide to handling regression bugs and let us know your plans within 3 business days, or the offending patch(es) will be backed out in accordance with our regression policy.

For more information on performance sheriffing please see our FAQ.

No longer regressed by: 1676533

There was a short time when we dod not had build on linux platforms because of Bug 1675329 - Add an API for reporting a return code from XPCOM applications.

https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&searchStr=Linux%2Cx64%2Cshippable%2Copt%2CBrowsertime%2Cperformance%2Ctests%2Con%2CFirefox%2Ctest-vismet-linux64-shippable%2Fopt-browsertime-tp6-firefox-facebook%2Cfb-vismet&tochange=4bc0bdcd7889aab2994b4500d41e6e35216e4848&fromchange=81361995e7ed2ba370867bfbefcba44f09732d22

in that period of time we got a regression on browsertime from one of the bugs:
Bug 1671586 - Crash in [@ mozilla::Internals::UpdateMirror<T>]
Bug 1677293 - Ship Software WebRender to all non-accelerated Linux nightly users with small screens as an experiment
Bug 1678454 - Hit MOZ_CRASH(assertion failed: (left == right) left: Some((1, (561.8844, -0.05859374, 0.0))), right: None) at src/third_party/rust/plane-split/src/polygon.rs:552

generated a big regression on browsertime

Some of the other bugs in that range are doc or where later backout.
Do you think one of you guys introduced it?

Flags: needinfo?(kwright)
Flags: needinfo?(dtownsend)
Flags: needinfo?(dmalyshau)
Flags: needinfo?(aosmond)

from the try build it looks like the culprit is
Bug 1677293 - Ship Software WebRender to all non-accelerated Linux nightly users with small screens as an experiment

Component: Performance → Graphics: WebRender
Flags: needinfo?(kwright)
Flags: needinfo?(dtownsend)
Flags: needinfo?(dmalyshau)
Product: Testing → Core
No longer regressed by: 1671586, 1678454
Has Regression Range: --- → yes

Set release status flags based on info from the regressing bug 1677293

status-firefox83: --- → unaffected
status-firefox84: --- → unaffected
status-firefox-esr78: --- → unaffected

== Change summary for alert #27895 (as of Tue, 01 Dec 2020 06:00:35 GMT) ==

Improvements:

Ratio Suite Test Platform Options Absolute values (old vs new)
2% raptor-speedometer-firefox linux64-shippable-qr webrender 104.69 -> 106.79

For up to date results, see: https://treeherder.mozilla.org/perfherder/alerts?id=27895

If this is caused by bug 1677293 then it might suggest that we aren't correctly enabling/disabling WebRender. Could this be related to bug 1680560?

Flags: needinfo?(gmierz2)

This is software webrender, which is still under development may well be slower than non-WebRender in some cases.

Add sw-wr-perf as a blocker, since that's where we're collecting these sorts of reports.

Blocks: sw-wr-perf
Severity: -- → S3
Flags: needinfo?(gmierz2)
Flags: needinfo?(aosmond)
Priority: -- → P3
Flags: needinfo?(aosmond)

(In reply to Dave Hunt [:davehunt] [he/him] ⌚GMT from comment #6)

If this is caused by bug 1677293 then it might suggest that we aren't correctly enabling/disabling WebRender. Could this be related to bug 1680560?

Likely, Andrew will investigate.

try with extra gecko logging: https://treeherder.mozilla.org/jobs?repo=try&revision=353672f42153b190931233d504a73b4284efe2fd&selectedTaskRun=OpaaJRpaScqTg4Q2u8lrnw.0

Do you know how we can pry Gecko logs out of these tests? My prints did not appear in any of the log files I checked. However I am fairly confident that given the regression between -qr and non-qr is identical, it is very likely they were both running basic before and are now using software webrender (so the envvar isn't making its way to the process.)

Flags: needinfo?(aosmond) → needinfo?(gmierz2)

:aosmond, I've made a patch to fix these issues here - it's landing today: https://bugzilla.mozilla.org/show_bug.cgi?id=1680560

Flags: needinfo?(gmierz2)
Status: NEW → RESOLVED
Closed: 4 years ago
Resolution: --- → WONTFIX
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