There is some overlap of the alert with bug 2051892 for the macOS pieces. The macOS entries here, the Speedometer 3 subtests, bing-search LCP and the Linux wikia SpeedIndex step at push 2058940, which is bug 2051892 (timer thread changes) landing just before this bug's push, inside the same alert range. Per-push medians for mac Speedometer 3 NewsSite-Nuxt, for example: 35.12 before, 35.39 at bug 2051892, 35.45 at this bug. Only linux matrix-react-bench steps at this bug's push (20.0 to 19.45). The pageload improvements from comment 25 were already reassigned to alert summary 53348, which covers the same range.
Bug 2076558 Comment 27 Edit History
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There is some overlap of the alert with bug 2051892. The macOS entries here, the Speedometer 3 subtests, bing-search LCP and the Linux wikia SpeedIndex step at push 2058940, which is bug 2051892 (timer thread changes) landing just before this bug's push, inside the same alert range. Per-push medians for mac Speedometer 3 NewsSite-Nuxt, for example: 35.12 before, 35.39 at bug 2051892, 35.45 at this bug. Only linux matrix-react-bench steps at this bug's push (20.0 to 19.45). The pageload improvements from comment 25 were already reassigned to alert summary 53348, which covers the same range.