Update BinderCallsStats perf tests to use a more realistic workload. (8a3e20a7) · Commits · e / os / android_frameworks_base

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

+45 −6

Original line number	Original line	Diff line number	Diff line
	@@ -38,6 +38,23 @@ import org.junit.runner.RunWith;
	@RunWith(AndroidJUnit4.class)		@RunWith(AndroidJUnit4.class)
	@LargeTest		@LargeTest
	public class BinderCallsStatsPerfTest {		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		@Rule
	public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();		public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
	@@ -57,28 +74,50 @@ public class BinderCallsStatsPerfTest {
	@Test		@Test
	public void timeCallSession() {		public void timeCallSession() {
	mBinderCallsStats.setDetailedTracking(true);		mBinderCallsStats.setDetailedTracking(true);
	runScenario();		runScenario(DEFAULT_BUCKET_SIZE);
	}		}

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

	@Test		@Test
	public void timeCallSessionTrackingDisabled() {		public void timeCallSessionTrackingDisabled() {
	mBinderCallsStats.setDetailedTracking(false);		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();		final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
	Binder b = new Binder();		Binder b = new Binder();
	while (state.keepRunning()) {		while (state.keepRunning()) {
	for (int i = 0; i < 1000; i++) {		for (int i = 0; i < 10000; i++) {
	CallSession s = mBinderCallsStats.callStarted(b, i % 100);		CallSession s = mBinderCallsStats.callStarted(b, i % maxBucketSize);
	mBinderCallsStats.callEnded(s, 0, 0);		mBinderCallsStats.callEnded(s, 0, 0);
	}		}
	}		}

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

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -419,7 +419,7 @@ public class BinderCallsStats implements BinderInternal.Observer {
	return SystemClock.elapsedRealtimeNanos() / 1000;		return SystemClock.elapsedRealtimeNanos() / 1000;
	}		}

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