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Commit fb5f9b86 authored by Philip Quinn's avatar Philip Quinn
Browse files

Update MotionPredictorBenchmark. 

* Use realistic durations and moving events to ensure the model is
  fully exercised.
* The requested prediction time is only a target, and it is valid for
  predictions to fall short of it.

com.android.perftests.core (2 Tests)
[1/2] android.input.MotionPredictorBenchmark#timeRecordAndPredict: PASSED (8.392s)
	perfetto_file_path: /sdcard/test_results/android.input.MotionPredictorBenchmark_timeRecordAndPredict/PerfettoListener/perfetto_android.input.MotionPredictorBenchmark_timeRecordAndPredict-1.perfetto-trace
	timeRecordAndPredict_mean (ns): 84059
	timeRecordAndPredict_median (ns): 82093
	timeRecordAndPredict_min (ns): 77361
	timeRecordAndPredict_standardDeviation: 5402
[2/2] android.input.MotionPredictorBenchmark#timeCreatePredictor: PASSED (7.650s)
	perfetto_file_path: /sdcard/test_results/android.input.MotionPredictorBenchmark_timeCreatePredictor/PerfettoListener/perfetto_android.input.MotionPredictorBenchmark_timeCreatePredictor-1.perfetto-trace
	timeCreatePredictor_mean (ns): 104809
	timeCreatePredictor_median (ns): 105000
	timeCreatePredictor_min (ns): 101148
	timeCreatePredictor_standardDeviation: 2837

Bug: 167946763
Test: atest MotionPredictorBenchmark
Change-Id: I2861a2f377a34eff6571a6ecdc4a34c46fcd753b
parent e773b5b4

apct-tests/perftests/core/src/android/input/MotionPredictorBenchmark.kt

+17 −8
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ import androidx.test.ext.junit.runners.AndroidJUnit4 


import org.junit.After

import org.junit.Assert.assertEquals

import org.junit.Assert.assertTrue

import org.junit.Before

import org.junit.Rule

import org.junit.Test
@@ -89,7 +90,6 @@ class MotionPredictorBenchmark { 
    private val initialPropertyValue =

            SystemProperties.get("persist.input.enable_motion_prediction")



    private var eventTime = Duration.ofMillis(1)



    @Before

    fun setUp() {
@@ -109,22 +109,31 @@ class MotionPredictorBenchmark { 
     */

    @Test

    fun timeRecordAndPredict() {

        val offset = Duration.ofMillis(1)

        val offset = Duration.ofMillis(20)

        var eventTime = Duration.ofMillis(0)

        val eventInterval = Duration.ofMillis(4) // 240 Hz



        var eventPosition = 0f

        val positionInterval = 10f



        val predictor = MotionPredictor(getPredictionContext(offset, /*enablePrediction=*/true))

        // ACTION_DOWN t=0 x=0 y=0

        predictor.record(getStylusMotionEvent(eventTime, ACTION_DOWN, /*x=*/0f, /*y=*/0f))

        predictor.record(getStylusMotionEvent(

            eventTime, ACTION_DOWN, /*x=*/eventPosition, /*y=*/eventPosition))



        val state = perfStatusReporter.getBenchmarkState()

        while (state.keepRunning()) {

            eventTime += Duration.ofMillis(1)

            eventTime += eventInterval

            eventPosition += positionInterval



            // Send MOVE event and then call .predict

            val moveEvent = getStylusMotionEvent(eventTime, ACTION_MOVE, /*x=*/1f, /*y=*/2f)

            val moveEvent = getStylusMotionEvent(

                eventTime, ACTION_MOVE, /*x=*/eventPosition, /*y=*/eventPosition)

            predictor.record(moveEvent)

            val predictionTime = eventTime + Duration.ofMillis(2)

            val predictionTime = eventTime + eventInterval

            val predicted = predictor.predict(predictionTime.toNanos())

            assertEquals(1, predicted.size)

            assertEquals((predictionTime + offset).toMillis(), predicted[0].eventTime)

            assertTrue(predicted[0].eventTime <= (predictionTime + offset).toMillis())

        }

    }
@@ -135,7 +144,7 @@ class MotionPredictorBenchmark { 
    @Test

    fun timeCreatePredictor() {

        val context = getPredictionContext(

                /*offset=*/Duration.ofMillis(1), /*enablePrediction=*/true)

                /*offset=*/Duration.ofMillis(20), /*enablePrediction=*/true)



        val state = perfStatusReporter.getBenchmarkState()

        while (state.keepRunning()) {