Merge "Break down jank between frame drops vs. triple buffered" into pi-dev (613783a9) · Commits · e / os / android_frameworks_base

core/proto/android/service/graphicsstats.proto

+4 −1

Original line number	Diff line number	Diff line
		@@ -56,7 +56,7 @@ message GraphicsStatsJankSummaryProto {
		// Number of "missed vsync" events.
		optional int32 missed_vsync_count = 3;

		// Number of "high input latency" events.
		// Number of frames in triple-buffering scenario (high input latency)
		optional int32 high_input_latency_count = 4;

		// Number of "slow UI thread" events.
		@@ -67,6 +67,9 @@ message GraphicsStatsJankSummaryProto {

		// Number of "slow draw" events.
		optional int32 slow_draw_count = 7;

		// Number of frames that missed their deadline (aka, visibly janked)
		optional int32 missed_deadline_count = 8;
		}

		message GraphicsStatsHistogramBucketProto {

libs/hwui/JankTracker.cpp

+26 −6

Original line number	Diff line number	Diff line
		@@ -129,22 +129,42 @@ void JankTracker::finishFrame(const FrameInfo& frame) {
		totalDuration -= forgiveAmount;
		}
		}

		LOG_ALWAYS_FATAL_IF(totalDuration <= 0, "Impossible totalDuration %" PRId64, totalDuration);
		mData->reportFrame(totalDuration);
		(*mGlobalData)->reportFrame(totalDuration);

		// Keep the fast path as fast as possible.
		if (CC_LIKELY(totalDuration < mFrameInterval)) {
		return;
		}

		// Only things like Surface.lockHardwareCanvas() are exempt from tracking
		if (frame[FrameInfoIndex::Flags] & EXEMPT_FRAMES_FLAGS) {
		if (CC_UNLIKELY(frame[FrameInfoIndex::Flags] & EXEMPT_FRAMES_FLAGS)) {
		return;
		}

		if (totalDuration > mFrameInterval) {
		mData->reportJank();
		(*mGlobalData)->reportJank();
		}

		bool isTripleBuffered = mSwapDeadline > frame[FrameInfoIndex::IntendedVsync];

		mSwapDeadline = std::max(mSwapDeadline + mFrameInterval,
		frame[FrameInfoIndex::IntendedVsync] + mFrameInterval);

		// If we hit the deadline, cool!
		if (frame[FrameInfoIndex::FrameCompleted] < mSwapDeadline) {
		if (isTripleBuffered) {
		mData->reportJankType(JankType::kHighInputLatency);
		(*mGlobalData)->reportJankType(JankType::kHighInputLatency);
		}
		return;
		}

		mData->reportJankType(JankType::kMissedDeadline);
		(*mGlobalData)->reportJankType(JankType::kMissedDeadline);

		// Janked, reset the swap deadline
		nsecs_t jitterNanos = frame[FrameInfoIndex::FrameCompleted] - frame[FrameInfoIndex::Vsync];
		nsecs_t lastFrameOffset = jitterNanos % mFrameInterval;
		mSwapDeadline = frame[FrameInfoIndex::FrameCompleted] - lastFrameOffset + mFrameInterval;

		for (int i = 0; i < NUM_BUCKETS; i++) {
		int64_t delta = frame.duration(COMPARISONS[i].start, COMPARISONS[i].end);

libs/hwui/JankTracker.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -75,6 +75,7 @@ private:

		std::array<int64_t, NUM_BUCKETS> mThresholds;
		int64_t mFrameInterval;
		nsecs_t mSwapDeadline;
		// The amount of time we will erase from the total duration to account
		// for SF vsync offsets with HWC2 blocking dequeueBuffers.
		// (Vsync + mDequeueBlockTolerance) is the point at which we expect

libs/hwui/ProfileData.cpp

+1 −2

Original line number	Diff line number	Diff line
		@@ -23,8 +23,7 @@ namespace uirenderer {

		static const char* JANK_TYPE_NAMES[] = {
		"Missed Vsync", "High input latency", "Slow UI thread",
		"Slow bitmap uploads", "Slow issue draw commands",
		};
		"Slow bitmap uploads", "Slow issue draw commands", "Frame deadline missed"};

		// The bucketing algorithm controls so to speak
		// If a frame is <= to this it goes in bucket 0

libs/hwui/ProfileData.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -33,6 +33,7 @@ enum JankType {
		kSlowUI,
		kSlowSync,
		kSlowRT,
		kMissedDeadline,

		// must be last
		NUM_BUCKETS,