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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/metrics/compositor_timing_history.h"
#include <memory>
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "cc/base/features.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
class CompositorTimingHistoryTest;
class TestCompositorTimingHistory : public CompositorTimingHistory {
public:
explicit TestCompositorTimingHistory(CompositorTimingHistoryTest* test)
: CompositorTimingHistory(RENDERER_UMA), test_(test) {}
TestCompositorTimingHistory(const TestCompositorTimingHistory&) = delete;
TestCompositorTimingHistory& operator=(const TestCompositorTimingHistory&) =
delete;
protected:
base::TimeTicks Now() const override;
raw_ptr<CompositorTimingHistoryTest> test_;
};
class CompositorTimingHistoryTest : public testing::Test {
public:
CompositorTimingHistoryTest() : timing_history_(this) {
AdvanceNowBy(base::Milliseconds(1));
timing_history_.SetRecordingEnabled(true);
}
void AdvanceNowBy(base::TimeDelta delta) { now_ += delta; }
base::TimeTicks Now() { return now_; }
protected:
TestCompositorTimingHistory timing_history_;
base::TimeTicks now_;
uint64_t sequence_number = 0;
viz::BeginFrameArgs GetFakeBeginFrameArg(bool on_critical_path = true) {
viz::BeginFrameArgs args = viz::BeginFrameArgs();
const uint64_t kSourceId = 1;
args.frame_id = {kSourceId, ++sequence_number};
args.frame_time = Now();
args.on_critical_path = on_critical_path;
return args;
}
};
base::TimeTicks TestCompositorTimingHistory::Now() const {
return test_->Now();
}
TEST_F(CompositorTimingHistoryTest, AllSequential_Commit) {
base::TimeDelta one_second = base::Seconds(1);
// Critical BeginMainFrames are faster than non critical ones,
// as expected.
base::TimeDelta begin_main_frame_queue_duration = base::Milliseconds(1);
base::TimeDelta begin_main_frame_start_to_ready_to_commit_duration =
base::Milliseconds(1);
base::TimeDelta commit_to_ready_to_activate_duration = base::Milliseconds(3);
base::TimeDelta commit_duration = base::Milliseconds(1);
base::TimeDelta activate_duration = base::Milliseconds(4);
base::TimeDelta draw_duration = base::Milliseconds(5);
timing_history_.WillBeginMainFrame(GetFakeBeginFrameArg());
AdvanceNowBy(begin_main_frame_queue_duration);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
timing_history_.NotifyReadyToCommit();
timing_history_.WillCommit();
AdvanceNowBy(commit_duration);
timing_history_.DidCommit();
AdvanceNowBy(commit_to_ready_to_activate_duration);
timing_history_.ReadyToActivate();
// Do not count idle time between notification and actual activation.
AdvanceNowBy(one_second);
timing_history_.WillActivate();
AdvanceNowBy(activate_duration);
timing_history_.DidActivate();
// Do not count idle time between activate and draw.
AdvanceNowBy(one_second);
timing_history_.WillDraw();
AdvanceNowBy(draw_duration);
timing_history_.DidDraw();
EXPECT_EQ(begin_main_frame_queue_duration,
timing_history_.BeginMainFrameQueueDurationCriticalEstimate());
EXPECT_EQ(begin_main_frame_queue_duration,
timing_history_.BeginMainFrameQueueDurationNotCriticalEstimate());
EXPECT_EQ(
begin_main_frame_start_to_ready_to_commit_duration,
timing_history_.BeginMainFrameStartToReadyToCommitDurationEstimate());
EXPECT_EQ(commit_duration, timing_history_.CommitDurationEstimate());
EXPECT_EQ(commit_to_ready_to_activate_duration,
timing_history_.CommitToReadyToActivateDurationEstimate());
EXPECT_EQ(activate_duration, timing_history_.ActivateDurationEstimate());
EXPECT_EQ(draw_duration, timing_history_.DrawDurationEstimate());
}
TEST_F(CompositorTimingHistoryTest, AllSequential_BeginMainFrameAborted) {
base::TimeDelta one_second = base::Seconds(1);
base::TimeDelta begin_main_frame_queue_duration = base::Milliseconds(1);
base::TimeDelta begin_main_frame_start_to_ready_to_commit_duration =
base::Milliseconds(1);
base::TimeDelta commit_to_ready_to_activate_duration = base::Milliseconds(2);
base::TimeDelta activate_duration = base::Milliseconds(4);
base::TimeDelta draw_duration = base::Milliseconds(5);
viz::BeginFrameArgs args_ = GetFakeBeginFrameArg(false);
timing_history_.WillBeginMainFrame(args_);
AdvanceNowBy(begin_main_frame_queue_duration);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
// BeginMainFrameAborted counts as a commit complete.
timing_history_.BeginMainFrameAborted();
AdvanceNowBy(commit_to_ready_to_activate_duration);
// Do not count idle time between notification and actual activation.
AdvanceNowBy(one_second);
timing_history_.WillActivate();
AdvanceNowBy(activate_duration);
timing_history_.DidActivate();
// Do not count idle time between activate and draw.
AdvanceNowBy(one_second);
timing_history_.WillDraw();
AdvanceNowBy(draw_duration);
timing_history_.DidDraw();
EXPECT_EQ(base::TimeDelta(),
timing_history_.BeginMainFrameQueueDurationCriticalEstimate());
EXPECT_EQ(begin_main_frame_queue_duration,
timing_history_.BeginMainFrameQueueDurationNotCriticalEstimate());
EXPECT_EQ(activate_duration, timing_history_.ActivateDurationEstimate());
EXPECT_EQ(draw_duration, timing_history_.DrawDurationEstimate());
}
TEST_F(CompositorTimingHistoryTest, BeginMainFrame_CriticalFaster) {
// Critical BeginMainFrames are faster than non critical ones.
base::TimeDelta begin_main_frame_queue_duration_critical =
base::Milliseconds(1);
base::TimeDelta begin_main_frame_queue_duration_not_critical =
base::Milliseconds(2);
base::TimeDelta begin_main_frame_start_to_ready_to_commit_duration =
base::Milliseconds(1);
viz::BeginFrameArgs args_ = GetFakeBeginFrameArg();
timing_history_.WillBeginMainFrame(args_);
AdvanceNowBy(begin_main_frame_queue_duration_critical);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
timing_history_.BeginMainFrameAborted();
args_ = GetFakeBeginFrameArg(false);
timing_history_.WillBeginMainFrame(args_);
AdvanceNowBy(begin_main_frame_queue_duration_not_critical);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
timing_history_.BeginMainFrameAborted();
// Since the critical BeginMainFrames are faster than non critical ones,
// the expectations are straightforward.
EXPECT_EQ(begin_main_frame_queue_duration_critical,
timing_history_.BeginMainFrameQueueDurationCriticalEstimate());
EXPECT_EQ(begin_main_frame_queue_duration_not_critical,
timing_history_.BeginMainFrameQueueDurationNotCriticalEstimate());
}
TEST_F(CompositorTimingHistoryTest, BeginMainFrames_OldCriticalSlower) {
// Critical BeginMainFrames are slower than non critical ones,
// which is unexpected, but could occur if one type of frame
// hasn't been sent for a significant amount of time.
base::TimeDelta begin_main_frame_queue_duration_critical =
base::Milliseconds(2);
base::TimeDelta begin_main_frame_queue_duration_not_critical =
base::Milliseconds(1);
base::TimeDelta begin_main_frame_start_to_ready_to_commit_duration =
base::Milliseconds(1);
// A single critical frame that is slow.
viz::BeginFrameArgs args_ = GetFakeBeginFrameArg();
timing_history_.WillBeginMainFrame(args_);
AdvanceNowBy(begin_main_frame_queue_duration_critical);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
// BeginMainFrameAborted counts as a commit complete.
timing_history_.BeginMainFrameAborted();
// A bunch of faster non critical frames that are newer.
for (int i = 0; i < 100; i++) {
args_ = GetFakeBeginFrameArg(false);
timing_history_.WillBeginMainFrame(args_);
AdvanceNowBy(begin_main_frame_queue_duration_not_critical);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
// BeginMainFrameAborted counts as a commit complete.
timing_history_.BeginMainFrameAborted();
}
// Recent fast non critical BeginMainFrames should result in the
// critical estimate also being fast.
EXPECT_EQ(begin_main_frame_queue_duration_not_critical,
timing_history_.BeginMainFrameQueueDurationCriticalEstimate());
EXPECT_EQ(begin_main_frame_queue_duration_not_critical,
timing_history_.BeginMainFrameQueueDurationNotCriticalEstimate());
}
TEST_F(CompositorTimingHistoryTest, BeginMainFrames_NewCriticalSlower) {
// Critical BeginMainFrames are slower than non critical ones,
// which is unexpected, but could occur if one type of frame
// hasn't been sent for a significant amount of time.
base::TimeDelta begin_main_frame_queue_duration_critical =
base::Milliseconds(2);
base::TimeDelta begin_main_frame_queue_duration_not_critical =
base::Milliseconds(1);
base::TimeDelta begin_main_frame_start_to_ready_to_commit_duration =
base::Milliseconds(1);
// A single non critical frame that is fast.
viz::BeginFrameArgs args_ = GetFakeBeginFrameArg(false);
timing_history_.WillBeginMainFrame(args_);
AdvanceNowBy(begin_main_frame_queue_duration_not_critical);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
timing_history_.BeginMainFrameAborted();
// A bunch of slower critical frames that are newer.
for (int i = 0; i < 100; i++) {
args_ = GetFakeBeginFrameArg();
timing_history_.WillBeginMainFrame(args_);
AdvanceNowBy(begin_main_frame_queue_duration_critical);
timing_history_.BeginMainFrameStarted(Now());
AdvanceNowBy(begin_main_frame_start_to_ready_to_commit_duration);
timing_history_.BeginMainFrameAborted();
}
// Recent slow critical BeginMainFrames should result in the
// not critical estimate also being slow.
EXPECT_EQ(begin_main_frame_queue_duration_critical,
timing_history_.BeginMainFrameQueueDurationCriticalEstimate());
EXPECT_EQ(begin_main_frame_queue_duration_critical,
timing_history_.BeginMainFrameQueueDurationNotCriticalEstimate());
}
} // namespace
} // namespace cc
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