#include "cc/trees/proxy_timing_history.h"
+#include "base/metrics/histogram.h"
+
const size_t kDurationHistorySize = 60;
const double kCommitAndActivationDurationEstimationPercentile = 50.0;
const double kDrawDurationEstimationPercentile = 100.0;
namespace cc {
-ProxyTimingHistory::ProxyTimingHistory()
+ProxyTimingHistory::ProxyTimingHistory(
+ RenderingStatsInstrumentation* rendering_stats_instrumentation)
: draw_duration_history_(kDurationHistorySize),
begin_main_frame_to_commit_duration_history_(kDurationHistorySize),
- commit_to_activate_duration_history_(kDurationHistorySize) {}
+ commit_to_activate_duration_history_(kDurationHistorySize),
+ rendering_stats_instrumentation_(rendering_stats_instrumentation) {
+}
ProxyTimingHistory::~ProxyTimingHistory() {}
void ProxyTimingHistory::DidCommit() {
commit_complete_time_ = base::TimeTicks::HighResNow();
+ base::TimeDelta begin_main_frame_to_commit_duration =
+ commit_complete_time_ - begin_main_frame_sent_time_;
+
+ // Before adding the new data point to the timing history, see what we would
+ // have predicted for this frame. This allows us to keep track of the accuracy
+ // of our predictions.
+ rendering_stats_instrumentation_->AddBeginMainFrameToCommitDuration(
+ begin_main_frame_to_commit_duration,
+ BeginMainFrameToCommitDurationEstimate());
+
begin_main_frame_to_commit_duration_history_.InsertSample(
- commit_complete_time_ - begin_main_frame_sent_time_);
+ begin_main_frame_to_commit_duration);
}
-void ProxyTimingHistory::DidActivatePendingTree() {
+void ProxyTimingHistory::DidActivateSyncTree() {
+ base::TimeDelta commit_to_activate_duration =
+ base::TimeTicks::HighResNow() - commit_complete_time_;
+
+ // Before adding the new data point to the timing history, see what we would
+ // have predicted for this frame. This allows us to keep track of the accuracy
+ // of our predictions.
+ rendering_stats_instrumentation_->AddCommitToActivateDuration(
+ commit_to_activate_duration, CommitToActivateDurationEstimate());
+
commit_to_activate_duration_history_.InsertSample(
- base::TimeTicks::HighResNow() - commit_complete_time_);
+ commit_to_activate_duration);
}
void ProxyTimingHistory::DidStartDrawing() {
start_draw_time_ = base::TimeTicks::HighResNow();
}
-base::TimeDelta ProxyTimingHistory::DidFinishDrawing() {
+void ProxyTimingHistory::DidFinishDrawing() {
base::TimeDelta draw_duration =
base::TimeTicks::HighResNow() - start_draw_time_;
+
+ // Before adding the new data point to the timing history, see what we would
+ // have predicted for this frame. This allows us to keep track of the accuracy
+ // of our predictions.
+ base::TimeDelta draw_duration_estimate = DrawDurationEstimate();
+ rendering_stats_instrumentation_->AddDrawDuration(draw_duration,
+ draw_duration_estimate);
+
+ AddDrawDurationUMA(draw_duration, draw_duration_estimate);
+
draw_duration_history_.InsertSample(draw_duration);
- return draw_duration;
+}
+
+void ProxyTimingHistory::AddDrawDurationUMA(
+ base::TimeDelta draw_duration,
+ base::TimeDelta draw_duration_estimate) {
+ base::TimeDelta draw_duration_overestimate;
+ base::TimeDelta draw_duration_underestimate;
+ if (draw_duration > draw_duration_estimate)
+ draw_duration_underestimate = draw_duration - draw_duration_estimate;
+ else
+ draw_duration_overestimate = draw_duration_estimate - draw_duration;
+ UMA_HISTOGRAM_CUSTOM_TIMES("Renderer.DrawDuration",
+ draw_duration,
+ base::TimeDelta::FromMilliseconds(1),
+ base::TimeDelta::FromMilliseconds(100),
+ 50);
+ UMA_HISTOGRAM_CUSTOM_TIMES("Renderer.DrawDurationUnderestimate",
+ draw_duration_underestimate,
+ base::TimeDelta::FromMilliseconds(1),
+ base::TimeDelta::FromMilliseconds(100),
+ 50);
+ UMA_HISTOGRAM_CUSTOM_TIMES("Renderer.DrawDurationOverestimate",
+ draw_duration_overestimate,
+ base::TimeDelta::FromMilliseconds(1),
+ base::TimeDelta::FromMilliseconds(100),
+ 50);
}
} // namespace cc