tools/telemetry/telemetry/web_perf/metrics/smoothness.py - Issue 365463003: Implement scroll handler latency tracking

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Unified Diff: tools/telemetry/telemetry/web_perf/metrics/smoothness.py

Issue 365463003: Implement scroll handler latency tracking (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src

Patch Set: Rebased. Created 6 years, 4 months ago

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Index: tools/telemetry/telemetry/web_perf/metrics/smoothness.py

diff --git a/tools/telemetry/telemetry/web_perf/metrics/smoothness.py b/tools/telemetry/telemetry/web_perf/metrics/smoothness.py

index ec8994bffb9a345d9e0bbd20db2b64e2a00e9745..c294db824e9ca2fbeae60f1ddebb76e3f55a06d2 100644

--- a/tools/telemetry/telemetry/web_perf/metrics/smoothness.py

+++ b/tools/telemetry/telemetry/web_perf/metrics/smoothness.py

@@ -33,6 +33,18 @@ class SmoothnessMetric(timeline_based_metric.TimelineBasedMetric):

results.AddValue(scalar.ScalarValue(

results.current_page, 'input_event_latency_discrepancy', 'ms',

round(input_event_latency_discrepancy, 4)))

+ scroll_update_latency = FlattenList(stats.scroll_update_latency)

+ if scroll_update_latency:

+ mean_scroll_update_latency = statistics.ArithmeticMean(

+ scroll_update_latency)

+ scroll_update_latency_discrepancy = statistics.DurationsDiscrepancy(

+ scroll_update_latency)

+ results.AddValue(scalar.ScalarValue(

+ results.current_page, 'mean_scroll_update_latency', 'ms',

+ round(mean_scroll_update_latency, 3)))

+ results.AddValue(scalar.ScalarValue(

+ results.current_page, 'scroll_update_latency_discrepancy', 'ms',

+ round(scroll_update_latency_discrepancy, 4)))

# List of queueing durations.

frame_queueing_durations = FlattenList(stats.frame_queueing_durations)