Merge "Update BinderCallsStats perf tests to use a more realistic workload." (91559181) · Commits · e / os / android_frameworks_base

apct-tests/perftests/core/src/android/os/BinderCallsStatsPerfTest.java

+45 −6

Original line number	Diff line number	Diff line
		@@ -38,6 +38,23 @@ import org.junit.runner.RunWith;
		@RunWith(AndroidJUnit4.class)
		@LargeTest
		public class BinderCallsStatsPerfTest {
		private static final int DEFAULT_BUCKET_SIZE = 1000;
		static class FakeCpuTimeBinderCallsStats extends BinderCallsStats {
		private int mTimeMs;

		FakeCpuTimeBinderCallsStats() {
		super(new BinderCallsStats.Injector());
		setDeviceState(new CachedDeviceState(false, false).getReadonlyClient());
		}

		protected long getThreadTimeMicro() {
		return mTimeMs++;
		}

		protected long getElapsedRealtimeMicro() {
		return mTimeMs++;
		}
		}

		@Rule
		public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
		@@ -57,28 +74,50 @@ public class BinderCallsStatsPerfTest {
		@Test
		public void timeCallSession() {
		mBinderCallsStats.setDetailedTracking(true);
		runScenario();
		runScenario(DEFAULT_BUCKET_SIZE);
		}

		@Test
		public void timeCallSessionOnePercentSampling() {
		mBinderCallsStats.setDetailedTracking(false);
		mBinderCallsStats.setSamplingInterval(100);
		runScenario();
		runScenario(DEFAULT_BUCKET_SIZE);
		}

		@Test
		public void timeCallSessionTrackingDisabled() {
		mBinderCallsStats.setDetailedTracking(false);
		runScenario();
		runScenario(DEFAULT_BUCKET_SIZE);
		}

		@Test
		public void timeCallSession_1000_buckets_cpuNotRecorded() {
		mBinderCallsStats = new FakeCpuTimeBinderCallsStats();
		mBinderCallsStats.setSamplingInterval(1);
		runScenario(/* max bucket size */ 1000);
		}

		@Test
		public void timeCallSession_500_buckets_cpuNotRecorded() {
		mBinderCallsStats = new FakeCpuTimeBinderCallsStats();
		mBinderCallsStats.setSamplingInterval(1);
		runScenario(/* max bucket size */ 500);
		}

		@Test
		public void timeCallSession_100_buckets_cpuNotRecorded() {
		mBinderCallsStats = new FakeCpuTimeBinderCallsStats();
		mBinderCallsStats.setSamplingInterval(1);
		runScenario(/* max bucket size */ 100);
		}

		private void runScenario() {
		// There will be a warmup time of maxBucketSize to initialize the map of CallStat.
		private void runScenario(int maxBucketSize) {
		final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
		Binder b = new Binder();
		while (state.keepRunning()) {
		for (int i = 0; i < 1000; i++) {
		CallSession s = mBinderCallsStats.callStarted(b, i % 100);
		for (int i = 0; i < 10000; i++) {
		CallSession s = mBinderCallsStats.callStarted(b, i % maxBucketSize);
		mBinderCallsStats.callEnded(s, 0, 0);
		}
		}

core/java/com/android/internal/os/BinderCallsStats.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -428,7 +428,7 @@ public class BinderCallsStats implements BinderInternal.Observer {
		return SystemClock.elapsedRealtimeNanos() / 1000;
		}

		private boolean shouldRecordDetailedData() {
		protected boolean shouldRecordDetailedData() {
		return mRandom.nextInt() % mPeriodicSamplingInterval == 0;
		}