Starting on the September 2nd Nightly build, this represents about 7.8% of the total parent process main thread hang time: https://fqueze.github.io/hang-stats/#date=20210902&row=0&filter=timing_distribution
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Starting on the September 2nd Nightly build, this represents about 7.8% of the total parent process main thread hang time: https://fqueze.github.io/hang-stats/#date=20210902&row=0&filter=timing_distribution Stack: ``` RtlAcquireSRWLockExclusive ntdll glean::private::timing_distribution::{{impl}}::start(glean::private::timing_distribution::TimingDistributionMetric*) xul fog::ffi::timing_distribution::fog_timing_distribution_start(unsigned int) xul mozilla::glean::impl::TimingDistributionMetric::Start() const xul static nsLayoutUtils::PaintFrame(gfxContext*, nsIFrame*, nsRegion const&, unsigned int, mozilla::nsDisplayListBuilderMode, nsLayoutUtils::PaintFrameFlags) xul ```