We'll want xperf profiles in addition to Gecko profiler profiles, for two reasons: - xperf works for both Firefox and Chrome, so we can compare equivalently-collected profiles - the Gecko profiler has higher overhead, and Firefox uses different code paths when profiling is active which distort sp3 profiles
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We'll want xperf profiles in addition to Gecko profiler profiles, for two reasons: - xperf works for both Firefox and Chrome, so we can compare equivalently-collected profiles - the Gecko profiler has higher overhead, and Firefox uses different code paths when profiling is active, which distorts sp3 profiles