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# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from core import perf_benchmark
from telemetry.timeline import tracing_category_filter
from telemetry.web_perf import timeline_based_measurement
from telemetry.web_perf.metrics import jitter_timeline
import page_sets
JITTER_CATEGORY = 'cdp.perf'
TIMELINE_REQUIRED_CATEGORY = 'blink.console'
class Jitter(perf_benchmark.PerfBenchmark):
"""Timeline based measurement benchmark for jitter."""
page_set = page_sets.JitterPageSet
def CreateTimelineBasedMeasurementOptions(self):
cat_filter = tracing_category_filter.CreateMinimalOverheadFilter()
cat_filter.AddIncludedCategory(JITTER_CATEGORY)
cat_filter.AddIncludedCategory(TIMELINE_REQUIRED_CATEGORY)
options = timeline_based_measurement.Options(
overhead_level=cat_filter)
options.SetLegacyTimelineBasedMetrics(
[jitter_timeline.JitterTimelineMetric()])
return options
@classmethod
def Name(cls):
return 'jitter'
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