Bug 1674973 Comment 0 Edit History

Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.

Original comment by

Florin Strugariu [:Bebe]

on 2020-11-03 00:45:15 PST

Perfherder has detected a browsertime performance regression from push [e301b90c2b0e7da0b43d27f4625780c927c20fe4](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=e301b90c2b0e7da0b43d27f4625780c927c20fe4). As author of one of the patches included in that push, we need your help to address this regression.

### Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 50% | pinterest | SpeedIndex | linux64-shippable-qr | warm webrender | 332.00 -> 499.08 |
| 50% | pinterest | SpeedIndex | linux64-shippable | warm | 335.92 -> 502.33 |
| 46% | imdb | ContentfulSpeedIndex | android-hw-p2-8-0-android-aarch64-shippable | warm | 933.50 -> 1,361.42 |
| 45% | pinterest | PerceptualSpeedIndex | linux64-shippable-qr | warm webrender | 342.75 -> 498.08 |
| 45% | pinterest | PerceptualSpeedIndex | linux64-shippable | warm | 346.08 -> 500.25 |
| 24% | imdb | SpeedIndex | android-hw-p2-8-0-android-aarch64-shippable | warm | 998.62 -> 1,238.33 |
| 18% | google-search-restaurants | SpeedIndex | android-hw-g5-7-0-arm7-api-16-shippable | cold | 666.33 -> 788.75 |
| 12% | pinterest | ContentfulSpeedIndex | linux64-shippable-qr | warm webrender | 282.04 -> 316.92 |
| 11% | pinterest | ContentfulSpeedIndex | linux64-shippable | warm | 281.17 -> 313.17 |
| 6% | microsoft-support | LastVisualChange | android-hw-g5-7-0-arm7-api-16-shippable | warm | 2,190.50 -> 2,325.50 |
| 5% | pinterest | ContentfulSpeedIndex | linux64-shippable | cold | 1,220.48 -> 1,285.33 |
| 5% | instagram | ContentfulSpeedIndex | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,233.26 -> 1,294.75 |

### Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 19% | facebook-cristiano | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 814.60 -> 659.33 |
| 19% | yandex | fcp | linux64-shippable | warm | 80.67 -> 65.46 |
| 11% | yandex | fcp | linux64-shippable | cold | 289.02 -> 257.46 |
| 8% | youtube | fcp | linux64-shippable-qr | warm webrender | 233.96 -> 216.08 |
| 7% | tumblr | fcp | linux64-shippable | cold | 468.78 -> 438.00 |
| 6% | facebook-cristiano |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 381.72 -> 358.98 |
| 4% | google-maps |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,118.19 -> 1,073.85 |
| 3% | cnn | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 3,885.62 -> 3,753.12 |
| 3% | google-maps |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 925.47 -> 899.30 |
| 2% | tumblr |  | linux64-shippable | cold | 665.04 -> 649.71 |


Details of the alert can be found in the [alert summary](https://treeherder.mozilla.org/perfherder/alerts?id=27416), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/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](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).

Revision 1 by

Florin Strugariu [:Bebe]

on 2020-11-03 00:46:58 PST

Perfherder has detected a browsertime performance regression from push [ea8ed7d8298aeb6115c5774865083dcf11ca1d23](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=ea8ed7d8298aeb6115c5774865083dcf11ca1d23). As author of one of the patches included in that push, we need your help to address this regression.


### Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 50% | pinterest | SpeedIndex | linux64-shippable-qr | warm webrender | 332.00 -> 499.08 |
| 50% | pinterest | SpeedIndex | linux64-shippable | warm | 335.92 -> 502.33 |
| 46% | imdb | ContentfulSpeedIndex | android-hw-p2-8-0-android-aarch64-shippable | warm | 933.50 -> 1,361.42 |
| 45% | pinterest | PerceptualSpeedIndex | linux64-shippable-qr | warm webrender | 342.75 -> 498.08 |
| 45% | pinterest | PerceptualSpeedIndex | linux64-shippable | warm | 346.08 -> 500.25 |
| 26% | facebook | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,418.96 -> 1,785.00 |
| 25% | facebook | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,412.25 -> 1,772.12 |
| 24% | imdb | SpeedIndex | android-hw-p2-8-0-android-aarch64-shippable | warm | 998.62 -> 1,238.33 |
| 18% | google-search-restaurants | SpeedIndex | android-hw-g5-7-0-arm7-api-16-shippable | cold | 666.33 -> 788.75 |
| 12% | pinterest | ContentfulSpeedIndex | linux64-shippable-qr | warm webrender | 282.04 -> 316.92 |
| 11% | pinterest | ContentfulSpeedIndex | linux64-shippable | warm | 281.17 -> 313.17 |
| 9% | apple | fcp | linux64-shippable | cold | 459.31 -> 502.38 |
| 9% | apple | fcp | linux64-shippable-qr | cold webrender | 461.08 -> 501.71 |
| 6% | microsoft-support | LastVisualChange | android-hw-g5-7-0-arm7-api-16-shippable | warm | 2,190.50 -> 2,325.50 |
| 5% | pinterest | ContentfulSpeedIndex | linux64-shippable | cold | 1,220.48 -> 1,285.33 |
| 5% | instagram | ContentfulSpeedIndex | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,233.26 -> 1,294.75 |

### Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 48% | imdb | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,113.33 -> 574.08 |
| 48% | microsoft-support | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 2,181.54 -> 1,131.92 |
| 45% | microsoft-support | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 1,045.21 -> 578.29 |
| 41% | imdb | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 532.58 -> 314.25 |
| 31% | web-de | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 161.54 -> 112.04 |
| 30% | bing-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 674.12 -> 471.83 |
| 30% | google-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 370.67 -> 259.50 |
| 30% | google-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 640.08 -> 450.96 |
| 29% | google | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 506.88 -> 361.62 |
| 28% | microsoft-support | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 2,471.71 -> 1,772.71 |
| 26% | netflix | fcp | linux64-shippable | warm | 67.67 -> 50.00 |
| 26% | booking | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 329.21 -> 244.08 |
| 26% | google | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 325.46 -> 241.38 |
| 26% | bing-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 367.75 -> 272.83 |
| 26% | google-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 409.79 -> 304.04 |
| 25% | wikipedia | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 346.29 -> 258.04 |
| 25% | google | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 302.38 -> 225.54 |
| 24% | netflix | fcp | linux64-shippable-qr | warm webrender | 69.67 -> 52.62 |
| 24% | web-de | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 368.67 -> 279.21 |
| 24% | bing-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 430.96 -> 326.54 |
| 24% | yahoo-news | fcp | linux64-shippable | warm | 422.17 -> 320.00 |
| 24% | twitch | fcp | linux64-shippable-qr | warm webrender | 73.40 -> 55.83 |
| 24% | reddit | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 398.12 -> 303.08 |
| 24% | amazon | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 628.54 -> 480.42 |
| 23% | yahoo-news | fcp | linux64-shippable-qr | warm webrender | 419.08 -> 320.62 |
| 23% | microsoft-support | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 1,246.75 -> 960.25 |
| 23% | allrecipes | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 257.17 -> 198.21 |
| 23% | booking | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 791.04 -> 610.58 |
| 23% | twitch | fcp | linux64-shippable | warm | 73.38 -> 56.79 |
| 22% | google-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 239.12 -> 185.42 |
| 22% | twitch | fcp | linux64-shippable | cold | 85.17 -> 66.58 |
| 22% | youtube | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 424.25 -> 332.12 |
| 21% | yandex | fcp | linux64-shippable-qr | warm webrender | 81.02 -> 63.92 |
| 21% | stackoverflow | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 340.96 -> 269.38 |
| 20% | bing-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 254.92 -> 203.00 |
| 20% | reddit | fcp | linux64-shippable | cold | 279.17 -> 222.46 |
| 20% | facebook-cristiano | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 693.62 -> 554.12 |
| 20% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 899.67 -> 720.33 |
| 20% | google | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 212.21 -> 170.25 |
| 20% | allrecipes | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 502.67 -> 403.33 |
| 20% | wikipedia | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 215.67 -> 173.25 |
| 20% | web-de | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 743.56 -> 598.29 |
| 20% | wikipedia | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 878.38 -> 707.12 |
| 19% | booking | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 279.17 -> 225.29 |
| 19% | outlook | fcp | linux64-shippable | warm | 92.04 -> 74.29 |
| 19% | amazon | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,295.50 -> 1,047.21 |
| 19% | facebook-cristiano | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 814.60 -> 659.33 |
| 19% | yandex | fcp | linux64-shippable | warm | 80.67 -> 65.46 |
| 19% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 461.96 -> 375.38 |
| 19% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 347.29 -> 282.33 |
| 19% | outlook | fcp | linux64-shippable-qr | warm webrender | 91.12 -> 74.12 |
| 18% | stackoverflow | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 653.92 -> 533.79 |
| 18% | twitch | fcp | linux64-shippable-qr | cold webrender | 83.08 -> 67.92 |
| 17% | facebook-cristiano | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 348.75 -> 289.08 |
| 17% | reddit | fcp | linux64-shippable-qr | cold webrender | 275.75 -> 229.42 |
| 16% | reddit | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 236.06 -> 197.42 |
| 16% | fandom | fcp | linux64-shippable | warm | 222.46 -> 186.38 |
| 16% | ebay-kleinanzeigen | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,271.96 -> 1,069.75 |
| 16% | fandom | fcp | linux64-shippable-qr | warm webrender | 220.77 -> 185.71 |
| 16% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 906.58 -> 762.88 |
| 16% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 358.10 -> 301.62 |
| 16% | amazon | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 342.96 -> 289.08 |
| 16% | facebook-cristiano | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,378.54 -> 1,163.79 |
| 15% | reddit | fcp | linux64-shippable | warm | 218.00 -> 184.25 |
| 15% | booking | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 693.71 -> 587.71 |
| 15% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 459.19 -> 389.46 |
| 15% | reddit | fcp | linux64-shippable-qr | warm webrender | 218.00 -> 185.04 |
| 15% | imdb |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,835.76 -> 1,558.51 |
| 15% | google-slides | fcp | linux64-shippable | warm | 234.08 -> 199.88 |
| 15% | google-slides | fcp | linux64-shippable-qr | warm webrender | 234.04 -> 199.88 |
| 15% | microsoft-support |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,027.27 -> 877.81 |
| 14% | imdb | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,971.75 -> 1,689.58 |
| 14% | ebay-kleinanzeigen-search | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,285.46 -> 1,106.62 |
| 14% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,243.12 -> 1,072.25 |
| 13% | bbc | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 325.92 -> 283.12 |
| 13% | yandex | fcp | linux64-shippable-qr | cold webrender | 290.79 -> 253.29 |
| 13% | pinterest | fcp | linux64-shippable-qr | warm webrender | 209.83 -> 183.00 |
| 13% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,245.27 -> 1,088.21 |
| 13% | bbc | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 806.83 -> 705.67 |
| 12% | google-maps | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,073.83 -> 946.25 |
| 12% | imdb |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 809.68 -> 713.63 |
| 12% | bing | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 458.33 -> 404.00 |
| 12% | pinterest | fcp | linux64-shippable | warm | 207.35 -> 182.92 |
| 12% | google-docs | fcp | linux64-shippable | warm | 213.42 -> 188.46 |
| 12% | stackoverflow | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,525.31 -> 1,347.00 |
| 12% | google-docs | fcp | linux64-shippable-qr | warm webrender | 216.88 -> 191.71 |
| 12% | cnn-ampstories | fcp | android-hw-g5-7-0-arm7-api-16-shippable | live warm | 1,219.46 -> 1,079.04 |
| 11% | netflix | fcp | linux64-shippable | cold | 279.08 -> 247.04 |
| 11% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,240.33 -> 1,098.25 |
| 11% | instagram | fcp | linux64-shippable | warm | 167.04 -> 148.58 |
| 11% | instagram | fcp | linux64-shippable-qr | warm webrender | 166.98 -> 148.58 |
| 11% | yandex | fcp | linux64-shippable | cold | 289.02 -> 257.46 |
| 11% | youtube | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 728.08 -> 648.71 |
| 11% | allrecipes | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,598.38 -> 1,426.12 |
| 11% | tumblr | fcp | linux64-shippable | warm | 186.25 -> 166.25 |
| 11% | amazon-search | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 473.00 -> 422.42 |
| 11% | google-maps | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 516.50 -> 461.50 |
| 11% | tumblr | fcp | linux64-shippable-qr | warm webrender | 186.08 -> 166.42 |
| 10% | outlook | fcp | linux64-shippable-qr | cold webrender | 175.62 -> 157.62 |
| 10% | twitter | fcp | linux64-shippable | warm | 167.00 -> 150.00 |
| 10% | twitter | fcp | linux64-shippable-qr | warm webrender | 167.00 -> 150.00 |
| 10% | bing-search | fcp | linux64-shippable-qr | warm webrender | 203.12 -> 183.00 |
| 10% | yahoo-mail | fcp | linux64-shippable-qr | cold webrender | 347.33 -> 313.33 |
| 10% | amazon-search | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,724.90 -> 1,559.67 |
| 10% | ebay | fcp | linux64-shippable-qr | warm webrender | 201.58 -> 182.33 |
| 10% | amazon-search | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 922.54 -> 834.58 |
| 9% | cnn-ampstories | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,473.88 -> 1,334.08 |
| 9% | instagram | fcp | linux64-shippable | cold | 200.42 -> 181.58 |
| 9% | outlook | fcp | linux64-shippable | cold | 174.46 -> 158.25 |
| 9% | google-maps | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 903.42 -> 820.62 |
| 9% | bing-search | fcp | linux64-shippable | warm | 202.12 -> 183.67 |
| 9% | bing | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 311.33 -> 283.21 |
| 9% | netflix | fcp | linux64-shippable-qr | cold webrender | 276.67 -> 251.79 |
| 9% | ebay | fcp | linux64-shippable | warm | 200.75 -> 183.00 |
| 9% | microsoft | fcp | linux64-shippable | warm | 200.75 -> 183.00 |
| 9% | facebook | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 357.08 -> 326.04 |
| 9% | yahoo-mail | fcp | linux64-shippable | cold | 345.33 -> 315.33 |
| 9% | paypal | fcp | linux64-shippable | cold | 612.25 -> 559.88 |
| 9% | google-search-restaurants |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 237.23 -> 217.06 |
| 8% | google-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 572.24 -> 525.17 |
| 8% | facebook-redesign | fcp | linux64-shippable | warm | 434.00 -> 398.75 |
| 8% | bing-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 540.82 -> 497.03 |
| 8% | facebook-redesign | fcp | linux64-shippable-qr | warm webrender | 433.25 -> 398.17 |
| 8% | google-search | fcp | linux64-shippable-qr | warm webrender | 238.40 -> 219.25 |
| 8% | microsoft | fcp | linux64-shippable-qr | warm webrender | 200.04 -> 184.33 |
| 8% | google |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 519.65 -> 479.00 |
| 8% | bing-search | fcp | linux64-shippable | cold | 268.33 -> 247.75 |
| 8% | google-slides | fcp | linux64-shippable | cold | 450.88 -> 416.33 |
| 8% | youtube | fcp | linux64-shippable-qr | warm webrender | 233.96 -> 216.08 |
| 8% | youtube | fcp | linux64-shippable | warm | 233.83 -> 216.00 |
| 8% | allrecipes |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,021.51 -> 943.86 |
| 8% | espn | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 1,423.38 -> 1,316.04 |
| 7% | apple | fcp | linux64-shippable | warm | 258.92 -> 239.67 |
| 7% | espn | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 3,070.75 -> 2,843.50 |
| 7% | amazon | fcp | linux64-shippable | warm | 334.94 -> 310.17 |
| 7% | google-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 399.88 -> 370.33 |
| 7% | google-slides | fcp | linux64-shippable-qr | cold webrender | 450.50 -> 417.50 |
| 7% | cnn-ampstories | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 690.38 -> 640.33 |
| 7% | reddit | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 2,625.73 -> 2,435.33 |
| 7% | google-maps | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 471.67 -> 437.50 |
| 7% | yahoo-news |  | linux64-shippable | warm | 353.62 -> 328.17 |
| 7% | yahoo-mail | fcp | linux64-shippable | warm | 269.08 -> 249.83 |
| 7% | yahoo-mail | fcp | linux64-shippable-qr | warm webrender | 268.50 -> 249.29 |
| 7% | netflix |  | linux64-shippable | warm | 191.04 -> 177.44 |
| 7% | espn | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 5,048.38 -> 4,697.67 |
| 7% | paypal | fcp | linux64-shippable-qr | cold webrender | 605.73 -> 564.25 |
| 7% | google-sheets | fcp | linux64-shippable-qr | warm webrender | 250.08 -> 233.00 |
| 7% | stackoverflow |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 329.72 -> 307.21 |
| 7% | twitch |  | linux64-shippable-qr | warm webrender | 211.40 -> 196.98 |
| 7% | google-sheets | fcp | linux64-shippable | warm | 250.00 -> 233.00 |
| 7% | youtube |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 346.84 -> 323.30 |
| 7% | bing-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 369.51 -> 345.06 |
| 7% | yahoo-news |  | linux64-shippable-qr | warm webrender | 352.60 -> 329.30 |
| 7% | amazon | fcp | linux64-shippable-qr | warm webrender | 334.75 -> 312.75 |
| 7% | tumblr | fcp | linux64-shippable | cold | 468.78 -> 438.00 |
| 7% | linkedin | fcp | linux64-shippable-qr | warm webrender | 282.29 -> 263.92 |
| 6% | google-sheets | fcp | linux64-shippable | cold | 533.88 -> 499.67 |
| 6% | google-sheets | fcp | linux64-shippable-qr | cold webrender | 534.33 -> 501.04 |
| 6% | booking |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 401.06 -> 376.21 |
| 6% | web-de |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 686.41 -> 644.49 |
| 6% | facebook-cristiano |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 381.72 -> 358.98 |
| 6% | youtube |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 694.03 -> 652.98 |
| 6% | google-search | fcp | linux64-shippable-qr | cold webrender | 300.67 -> 283.00 |
| 6% | twitch |  | linux64-shippable | cold | 259.88 -> 244.60 |
| 6% | wikipedia |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 357.62 -> 336.64 |
| 6% | amazon |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 534.02 -> 502.80 |
| 6% | tumblr | fcp | linux64-shippable-qr | cold webrender | 469.85 -> 443.29 |
| 6% | booking |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,224.46 -> 1,155.57 |
| 6% | ebay | fcp | linux64-shippable | cold | 613.21 -> 578.79 |
| 6% | facebook | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 685.75 -> 647.50 |
| 6% | facebook-cristiano |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 757.73 -> 715.95 |
| 5% | youtube |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 687.04 -> 649.40 |
| 5% | instagram |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 645.54 -> 610.41 |
| 5% | microsoft | fcp | linux64-shippable | cold | 500.60 -> 473.75 |
| 5% | google-search | fcp | linux64-shippable | cold | 298.42 -> 282.96 |
| 5% | reddit |  | linux64-shippable | cold | 626.73 -> 594.32 |
| 5% | twitch |  | linux64-shippable | warm | 210.10 -> 199.28 |
| 5% | pinterest | fcp | linux64-shippable-qr | cold webrender | 832.88 -> 790.58 |
| 5% | youtube | fcp | linux64-shippable | cold | 439.33 -> 417.75 |
| 5% | instagram |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 818.62 -> 779.52 |
| 5% | instagram |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 820.02 -> 783.07 |
| 4% | facebook-redesign | fcp | linux64-shippable-qr | cold webrender | 1,052.79 -> 1,005.75 |
| 4% | outlook |  | linux64-shippable | warm | 119.89 -> 114.54 |
| 4% | imdb | fcp | linux64-shippable | warm | 558.65 -> 534.21 |
| 4% | stackoverflow |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 650.89 -> 622.69 |
| 4% | facebook-redesign | fcp | linux64-shippable | cold | 1,052.25 -> 1,007.00 |
| 4% | reddit |  | linux64-shippable-qr | cold webrender | 627.98 -> 601.00 |
| 4% | google-slides |  | linux64-shippable | warm | 426.41 -> 408.65 |
| 4% | reddit |  | linux64-shippable | warm | 466.41 -> 447.73 |
| 4% | google-maps |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,118.19 -> 1,073.85 |
| 4% | ebay-kleinanzeigen |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,292.68 -> 1,241.84 |
| 4% | google-slides |  | linux64-shippable-qr | warm webrender | 424.79 -> 408.47 |
| 4% | reddit |  | linux64-shippable-qr | warm webrender | 467.70 -> 450.22 |
| 4% | linkedin | fcp | linux64-shippable-qr | cold webrender | 550.96 -> 530.75 |
| 3% | cnn | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 3,885.62 -> 3,753.12 |
| 3% | pinterest |  | linux64-shippable-qr | warm webrender | 420.30 -> 406.24 |
| 3% | outlook |  | linux64-shippable-qr | cold webrender | 302.67 -> 292.92 |
| 3% | bbc |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 903.86 -> 874.84 |
| 3% | office | fcp | linux64-shippable-qr | warm webrender | 589.31 -> 570.96 |
| 3% | bbc |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 362.99 -> 351.82 |
| 3% | google-docs |  | linux64-shippable | warm | 386.37 -> 374.90 |
| 3% | tumblr |  | linux64-shippable | warm | 260.93 -> 253.18 |
| 3% | google-maps |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 925.47 -> 899.30 |
| 3% | twitter |  | linux64-shippable-qr | warm webrender | 274.61 -> 267.10 |
| 3% | google-docs |  | linux64-shippable-qr | warm webrender | 388.21 -> 377.81 |
| 3% | bing-search |  | linux64-shippable-qr | warm webrender | 187.27 -> 182.27 |
| 3% | twitter |  | linux64-shippable | warm | 275.04 -> 267.69 |
| 3% | tumblr |  | linux64-shippable-qr | warm webrender | 260.44 -> 253.82 |
| 2% | microsoft |  | linux64-shippable | warm | 212.76 -> 207.79 |
| 2% | tumblr |  | linux64-shippable | cold | 665.04 -> 649.71 |
| 2% | yahoo-mail |  | linux64-shippable-qr | cold webrender | 581.81 -> 568.76 |
| 2% | facebook-redesign |  | linux64-shippable-qr | warm webrender | 321.22 -> 314.54 |
| 2% | yahoo-mail |  | linux64-shippable | cold | 581.66 -> 569.86 |
| 2% | ebay |  | linux64-shippable | warm | 263.43 -> 258.14 |
| 2% | facebook-redesign |  | linux64-shippable | warm | 321.33 -> 314.86 |


Details of the alert can be found in the [alert summary](https://treeherder.mozilla.org/perfherder/alerts?id=27482), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/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](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).

Revision 2 by

Florin Strugariu [:Bebe]

on 2020-11-23 08:35:53 PST

Perfherder has detected a browsertime performance regression from push [ea8ed7d8298aeb6115c5774865083dcf11ca1d23](https://hg.mozilla.org/integration/autoland/pushloghtml?changeset=ea8ed7d8298aeb6115c5774865083dcf11ca1d23). As author of one of the patches included in that push, we need your help to address this regression.


== Change summary for alert #27482 (as of Tue, 03 Nov 2020 06:07:29 GMT) ==

### Regressions:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 46% | imdb | ContentfulSpeedIndex | android-hw-p2-8-0-android-aarch64-shippable | warm | 933.50 -> 1,361.42 |
| 26% | facebook | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,418.96 -> 1,785.00 |
| 25% | facebook | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,412.25 -> 1,772.12 |
| 24% | imdb | SpeedIndex | android-hw-p2-8-0-android-aarch64-shippable | warm | 998.62 -> 1,238.33 |
| 18% | google-search-restaurants | SpeedIndex | android-hw-g5-7-0-arm7-api-16-shippable | cold | 666.33 -> 788.75 |
| 9% | apple | fcp | linux64-shippable | cold | 459.31 -> 502.38 |
| 9% | apple | fcp | linux64-shippable-qr | cold webrender | 461.08 -> 501.71 |
| 6% | microsoft-support | LastVisualChange | android-hw-g5-7-0-arm7-api-16-shippable | warm | 2,190.50 -> 2,325.50 |
| 5% | instagram | ContentfulSpeedIndex | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,233.26 -> 1,294.75 |
| 3% | apple |  | linux64-shippable | cold | 589.05 -> 604.41 |

### Improvements:

| **Ratio** | **Suite** | **Test** | **Platform** | **Options** | **Absolute values (old vs new)**| 
|--|--|--|--|--|--| 
| 48% | imdb | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,113.33 -> 574.08 |
| 48% | microsoft-support | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 2,181.54 -> 1,131.92 |
| 45% | microsoft-support | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 1,045.21 -> 578.29 |
| 41% | imdb | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 532.58 -> 314.25 |
| 31% | web-de | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 161.54 -> 112.04 |
| 30% | bing-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 674.12 -> 471.83 |
| 30% | google-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 370.67 -> 259.50 |
| 30% | google-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 640.08 -> 450.96 |
| 29% | google | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 506.88 -> 361.62 |
| 28% | microsoft-support | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 2,471.71 -> 1,772.71 |
| 26% | netflix | fcp | linux64-shippable | warm | 67.67 -> 50.00 |
| 26% | booking | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 329.21 -> 244.08 |
| 26% | google | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 325.46 -> 241.38 |
| 26% | bing-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 367.75 -> 272.83 |
| 26% | google-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 409.79 -> 304.04 |
| 25% | wikipedia | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 346.29 -> 258.04 |
| 25% | google | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 302.38 -> 225.54 |
| 24% | netflix | fcp | linux64-shippable-qr | warm webrender | 69.67 -> 52.62 |
| 24% | web-de | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 368.67 -> 279.21 |
| 24% | bing-search-restaurants | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 430.96 -> 326.54 |
| 24% | yahoo-news | fcp | linux64-shippable | warm | 422.17 -> 320.00 |
| 24% | twitch | fcp | linux64-shippable-qr | warm webrender | 73.40 -> 55.83 |
| 24% | reddit | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 398.12 -> 303.08 |
| 24% | amazon | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 628.54 -> 480.42 |
| 23% | yahoo-news | fcp | linux64-shippable-qr | warm webrender | 419.08 -> 320.62 |
| 23% | microsoft-support | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 1,246.75 -> 960.25 |
| 23% | allrecipes | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 257.17 -> 198.21 |
| 23% | booking | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 791.04 -> 610.58 |
| 23% | twitch | fcp | linux64-shippable | warm | 73.38 -> 56.79 |
| 22% | google-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 239.12 -> 185.42 |
| 22% | twitch | fcp | linux64-shippable | cold | 85.17 -> 66.58 |
| 22% | youtube | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 424.25 -> 332.12 |
| 21% | yandex | fcp | linux64-shippable-qr | warm webrender | 81.02 -> 63.92 |
| 21% | stackoverflow | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 340.96 -> 269.38 |
| 20% | bing-search-restaurants | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 254.92 -> 203.00 |
| 20% | reddit | fcp | linux64-shippable | cold | 279.17 -> 222.46 |
| 20% | facebook-cristiano | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 693.62 -> 554.12 |
| 20% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 899.67 -> 720.33 |
| 20% | google | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 212.21 -> 170.25 |
| 20% | allrecipes | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 502.67 -> 403.33 |
| 20% | wikipedia | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 215.67 -> 173.25 |
| 20% | web-de | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 743.56 -> 598.29 |
| 20% | wikipedia | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 878.38 -> 707.12 |
| 19% | booking | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 279.17 -> 225.29 |
| 19% | outlook | fcp | linux64-shippable | warm | 92.04 -> 74.29 |
| 19% | amazon | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,295.50 -> 1,047.21 |
| 19% | facebook-cristiano | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 814.60 -> 659.33 |
| 19% | yandex | fcp | linux64-shippable | warm | 80.67 -> 65.46 |
| 19% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 461.96 -> 375.38 |
| 19% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 347.29 -> 282.33 |
| 19% | outlook | fcp | linux64-shippable-qr | warm webrender | 91.12 -> 74.12 |
| 18% | stackoverflow | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 653.92 -> 533.79 |
| 18% | twitch | fcp | linux64-shippable-qr | cold webrender | 83.08 -> 67.92 |
| 17% | facebook-cristiano | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 348.75 -> 289.08 |
| 17% | reddit | fcp | linux64-shippable-qr | cold webrender | 275.75 -> 229.42 |
| 16% | reddit | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 236.06 -> 197.42 |
| 16% | fandom | fcp | linux64-shippable | warm | 222.46 -> 186.38 |
| 16% | ebay-kleinanzeigen | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,271.96 -> 1,069.75 |
| 16% | fandom | fcp | linux64-shippable-qr | warm webrender | 220.77 -> 185.71 |
| 16% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 906.58 -> 762.88 |
| 16% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 358.10 -> 301.62 |
| 16% | amazon | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 342.96 -> 289.08 |
| 16% | facebook-cristiano | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,378.54 -> 1,163.79 |
| 15% | reddit | fcp | linux64-shippable | warm | 218.00 -> 184.25 |
| 15% | booking | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 693.71 -> 587.71 |
| 15% | instagram | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 459.19 -> 389.46 |
| 15% | reddit | fcp | linux64-shippable-qr | warm webrender | 218.00 -> 185.04 |
| 15% | imdb |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,835.76 -> 1,558.51 |
| 15% | google-slides | fcp | linux64-shippable | warm | 234.08 -> 199.88 |
| 15% | google-slides | fcp | linux64-shippable-qr | warm webrender | 234.04 -> 199.88 |
| 15% | microsoft-support |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,027.27 -> 877.81 |
| 14% | imdb | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,971.75 -> 1,689.58 |
| 14% | ebay-kleinanzeigen-search | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,285.46 -> 1,106.62 |
| 14% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,243.12 -> 1,072.25 |
| 13% | bbc | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 325.92 -> 283.12 |
| 13% | yandex | fcp | linux64-shippable-qr | cold webrender | 290.79 -> 253.29 |
| 13% | pinterest | fcp | linux64-shippable-qr | warm webrender | 209.83 -> 183.00 |
| 13% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,245.27 -> 1,088.21 |
| 13% | bbc | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 806.83 -> 705.67 |
| 12% | google-maps | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,073.83 -> 946.25 |
| 12% | imdb |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 809.68 -> 713.63 |
| 12% | bing | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 458.33 -> 404.00 |
| 12% | pinterest | fcp | linux64-shippable | warm | 207.35 -> 182.92 |
| 12% | google-docs | fcp | linux64-shippable | warm | 213.42 -> 188.46 |
| 12% | stackoverflow | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,525.31 -> 1,347.00 |
| 12% | google-docs | fcp | linux64-shippable-qr | warm webrender | 216.88 -> 191.71 |
| 12% | cnn-ampstories | fcp | android-hw-g5-7-0-arm7-api-16-shippable | live warm | 1,219.46 -> 1,079.04 |
| 11% | netflix | fcp | linux64-shippable | cold | 279.08 -> 247.04 |
| 11% | youtube | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,240.33 -> 1,098.25 |
| 11% | instagram | fcp | linux64-shippable | warm | 167.04 -> 148.58 |
| 11% | instagram | fcp | linux64-shippable-qr | warm webrender | 166.98 -> 148.58 |
| 11% | yandex | fcp | linux64-shippable | cold | 289.02 -> 257.46 |
| 11% | youtube | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 728.08 -> 648.71 |
| 11% | allrecipes | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,598.38 -> 1,426.12 |
| 11% | tumblr | fcp | linux64-shippable | warm | 186.25 -> 166.25 |
| 11% | amazon-search | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 473.00 -> 422.42 |
| 11% | google-maps | fcp | android-hw-p2-8-0-android-aarch64-shippable | cold | 516.50 -> 461.50 |
| 11% | tumblr | fcp | linux64-shippable-qr | warm webrender | 186.08 -> 166.42 |
| 10% | outlook | fcp | linux64-shippable-qr | cold webrender | 175.62 -> 157.62 |
| 10% | twitter | fcp | linux64-shippable | warm | 167.00 -> 150.00 |
| 10% | twitter | fcp | linux64-shippable-qr | warm webrender | 167.00 -> 150.00 |
| 10% | bing-search | fcp | linux64-shippable-qr | warm webrender | 203.12 -> 183.00 |
| 10% | yahoo-mail | fcp | linux64-shippable-qr | cold webrender | 347.33 -> 313.33 |
| 10% | amazon-search | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,724.90 -> 1,559.67 |
| 10% | ebay | fcp | linux64-shippable-qr | warm webrender | 201.58 -> 182.33 |
| 10% | amazon-search | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 922.54 -> 834.58 |
| 9% | cnn-ampstories | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,473.88 -> 1,334.08 |
| 9% | instagram | fcp | linux64-shippable | cold | 200.42 -> 181.58 |
| 9% | outlook | fcp | linux64-shippable | cold | 174.46 -> 158.25 |
| 9% | google-maps | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 903.42 -> 820.62 |
| 9% | bing-search | fcp | linux64-shippable | warm | 202.12 -> 183.67 |
| 9% | bing | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 311.33 -> 283.21 |
| 9% | netflix | fcp | linux64-shippable-qr | cold webrender | 276.67 -> 251.79 |
| 9% | ebay | fcp | linux64-shippable | warm | 200.75 -> 183.00 |
| 9% | microsoft | fcp | linux64-shippable | warm | 200.75 -> 183.00 |
| 9% | facebook | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 357.08 -> 326.04 |
| 9% | yahoo-mail | fcp | linux64-shippable | cold | 345.33 -> 315.33 |
| 9% | paypal | fcp | linux64-shippable | cold | 612.25 -> 559.88 |
| 9% | google-search-restaurants |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 237.23 -> 217.06 |
| 8% | google-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 572.24 -> 525.17 |
| 8% | facebook-redesign | fcp | linux64-shippable | warm | 434.00 -> 398.75 |
| 8% | bing-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 540.82 -> 497.03 |
| 8% | facebook-redesign | fcp | linux64-shippable-qr | warm webrender | 433.25 -> 398.17 |
| 8% | google-search | fcp | linux64-shippable-qr | warm webrender | 238.40 -> 219.25 |
| 8% | microsoft | fcp | linux64-shippable-qr | warm webrender | 200.04 -> 184.33 |
| 8% | google |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 519.65 -> 479.00 |
| 8% | bing-search | fcp | linux64-shippable | cold | 268.33 -> 247.75 |
| 8% | google-slides | fcp | linux64-shippable | cold | 450.88 -> 416.33 |
| 8% | youtube | fcp | linux64-shippable-qr | warm webrender | 233.96 -> 216.08 |
| 8% | youtube | fcp | linux64-shippable | warm | 233.83 -> 216.00 |
| 8% | allrecipes |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 1,021.51 -> 943.86 |
| 8% | espn | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 1,423.38 -> 1,316.04 |
| 7% | apple | fcp | linux64-shippable | warm | 258.92 -> 239.67 |
| 7% | espn | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 3,070.75 -> 2,843.50 |
| 7% | amazon | fcp | linux64-shippable | warm | 334.94 -> 310.17 |
| 7% | google-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 399.88 -> 370.33 |
| 7% | google-slides | fcp | linux64-shippable-qr | cold webrender | 450.50 -> 417.50 |
| 7% | apple | fcp | linux64-shippable-qr | warm webrender | 257.79 -> 239.00 |
| 7% | cnn-ampstories | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 690.38 -> 640.33 |
| 7% | reddit | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 2,625.73 -> 2,435.33 |
| 7% | google-maps | fcp | android-hw-p2-8-0-android-aarch64-shippable | warm | 471.67 -> 437.50 |
| 7% | yahoo-news |  | linux64-shippable | warm | 353.62 -> 328.17 |
| 7% | yahoo-mail | fcp | linux64-shippable | warm | 269.08 -> 249.83 |
| 7% | yahoo-mail | fcp | linux64-shippable-qr | warm webrender | 268.50 -> 249.29 |
| 7% | netflix |  | linux64-shippable | warm | 191.04 -> 177.44 |
| 7% | espn | fcp | android-hw-g5-7-0-arm7-api-16-shippable | cold | 5,048.38 -> 4,697.67 |
| 7% | paypal | fcp | linux64-shippable-qr | cold webrender | 605.73 -> 564.25 |
| 7% | google-sheets | fcp | linux64-shippable-qr | warm webrender | 250.08 -> 233.00 |
| 7% | stackoverflow |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 329.72 -> 307.21 |
| 7% | twitch |  | linux64-shippable-qr | warm webrender | 211.40 -> 196.98 |
| 7% | google-sheets | fcp | linux64-shippable | warm | 250.00 -> 233.00 |
| 7% | youtube |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 346.84 -> 323.30 |
| 7% | bing-search-restaurants |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 369.51 -> 345.06 |
| 7% | yahoo-news |  | linux64-shippable-qr | warm webrender | 352.60 -> 329.30 |
| 7% | amazon | fcp | linux64-shippable-qr | warm webrender | 334.75 -> 312.75 |
| 7% | tumblr | fcp | linux64-shippable | cold | 468.78 -> 438.00 |
| 7% | linkedin | fcp | linux64-shippable-qr | warm webrender | 282.29 -> 263.92 |
| 6% | google-sheets | fcp | linux64-shippable | cold | 533.88 -> 499.67 |
| 6% | google-sheets | fcp | linux64-shippable-qr | cold webrender | 534.33 -> 501.04 |
| 6% | booking |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 401.06 -> 376.21 |
| 6% | web-de |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 686.41 -> 644.49 |
| 6% | microsoft | fcp | linux64-shippable-qr | cold webrender | 500.46 -> 469.92 |
| 6% | facebook-cristiano |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 381.72 -> 358.98 |
| 6% | youtube |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 694.03 -> 652.98 |
| 6% | google-search | fcp | linux64-shippable-qr | cold webrender | 300.67 -> 283.00 |
| 6% | twitch |  | linux64-shippable | cold | 259.88 -> 244.60 |
| 6% | wikipedia |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 357.62 -> 336.64 |
| 6% | amazon |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 534.02 -> 502.80 |
| 6% | tumblr | fcp | linux64-shippable-qr | cold webrender | 469.85 -> 443.29 |
| 6% | booking |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,224.46 -> 1,155.57 |
| 6% | ebay | fcp | linux64-shippable | cold | 613.21 -> 578.79 |
| 6% | facebook | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 685.75 -> 647.50 |
| 6% | facebook-cristiano |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 757.73 -> 715.95 |
| 5% | youtube |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 687.04 -> 649.40 |
| 5% | instagram |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 645.54 -> 610.41 |
| 5% | microsoft | fcp | linux64-shippable | cold | 500.60 -> 473.75 |
| 5% | google-search | fcp | linux64-shippable | cold | 298.42 -> 282.96 |
| 5% | reddit |  | linux64-shippable | cold | 626.73 -> 594.32 |
| 5% | twitch |  | linux64-shippable | warm | 210.10 -> 199.28 |
| 5% | pinterest | fcp | linux64-shippable-qr | cold webrender | 832.88 -> 790.58 |
| 5% | google |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 266.96 -> 253.67 |
| 5% | youtube | fcp | linux64-shippable | cold | 439.33 -> 417.75 |
| 5% | instagram |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 818.62 -> 779.52 |
| 5% | instagram |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 820.02 -> 783.07 |
| 4% | facebook-redesign | fcp | linux64-shippable-qr | cold webrender | 1,052.79 -> 1,005.75 |
| 4% | outlook |  | linux64-shippable | warm | 119.89 -> 114.54 |
| 4% | imdb | fcp | linux64-shippable | warm | 558.65 -> 534.21 |
| 4% | stackoverflow |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 650.89 -> 622.69 |
| 4% | facebook-redesign | fcp | linux64-shippable | cold | 1,052.25 -> 1,007.00 |
| 4% | reddit |  | linux64-shippable-qr | cold webrender | 627.98 -> 601.00 |
| 4% | google-slides |  | linux64-shippable | warm | 426.41 -> 408.65 |
| 4% | reddit |  | linux64-shippable | warm | 466.41 -> 447.73 |
| 4% | google-maps |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,118.19 -> 1,073.85 |
| 4% | ebay-kleinanzeigen |  | android-hw-g5-7-0-arm7-api-16-shippable | cold | 1,292.68 -> 1,241.84 |
| 4% | google-slides |  | linux64-shippable-qr | warm webrender | 424.79 -> 408.47 |
| 4% | reddit |  | linux64-shippable-qr | warm webrender | 467.70 -> 450.22 |
| 4% | linkedin | fcp | linux64-shippable-qr | cold webrender | 550.96 -> 530.75 |
| 3% | linkedin | fcp | linux64-shippable | cold | 550.92 -> 531.67 |
| 3% | cnn | fcp | android-hw-g5-7-0-arm7-api-16-shippable | warm | 3,885.62 -> 3,753.12 |
| 3% | pinterest |  | linux64-shippable-qr | warm webrender | 420.30 -> 406.24 |
| 3% | outlook |  | linux64-shippable-qr | cold webrender | 302.67 -> 292.92 |
| 3% | bbc |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 903.86 -> 874.84 |
| 3% | office | fcp | linux64-shippable-qr | warm webrender | 589.31 -> 570.96 |
| 3% | bbc |  | android-hw-p2-8-0-android-aarch64-shippable | warm | 362.99 -> 351.82 |
| 3% | google-docs |  | linux64-shippable | warm | 386.37 -> 374.90 |
| 3% | tumblr |  | linux64-shippable | warm | 260.93 -> 253.18 |
| 3% | google-maps |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 925.47 -> 899.30 |
| 3% | twitter |  | linux64-shippable-qr | warm webrender | 274.61 -> 267.10 |
| 3% | google-docs |  | linux64-shippable-qr | warm webrender | 388.21 -> 377.81 |
| 3% | bing-search |  | linux64-shippable-qr | warm webrender | 187.27 -> 182.27 |
| 3% | twitter |  | linux64-shippable | warm | 275.04 -> 267.69 |
| 3% | tumblr |  | linux64-shippable-qr | warm webrender | 260.44 -> 253.82 |
| 2% | microsoft |  | linux64-shippable | warm | 212.76 -> 207.79 |
| 2% | tumblr |  | linux64-shippable | cold | 665.04 -> 649.71 |
| 2% | yahoo-mail |  | linux64-shippable-qr | cold webrender | 581.81 -> 568.76 |
| 2% | facebook-redesign |  | linux64-shippable-qr | warm webrender | 321.22 -> 314.54 |
| 2% | facebook |  | android-hw-g5-7-0-arm7-api-16-shippable | warm | 804.93 -> 788.43 |
| 2% | yahoo-mail |  | linux64-shippable | cold | 581.66 -> 569.86 |
| 2% | yahoo-mail |  | linux64-shippable-qr | warm webrender | 374.27 -> 366.66 |
| 2% | youtube |  | linux64-shippable-qr | warm webrender | 474.09 -> 464.46 |
| 2% | ebay |  | linux64-shippable | warm | 263.43 -> 258.14 |
| 2% | facebook-redesign |  | linux64-shippable | warm | 321.33 -> 314.86 |

For up to date results, see: https://treeherder.mozilla.org/perfherder/alerts?id=27482


Details of the alert can be found in the [alert summary](https://treeherder.mozilla.org/perfherder/alerts?id=27482), including links to graphs and comparisons for each of the affected tests. Please follow our [guide to handling regression bugs](https://wiki.mozilla.org/TestEngineering/Performance/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](https://www.mozilla.org/en-US/about/governance/policies/regressions/).

For more information on performance sheriffing please see our [FAQ](https://wiki.mozilla.org/TestEngineering/Performance/FAQ).

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