Report breakdown of Microdroid userspace memory usage
Dump the list of running processes in Microdroid using 'ps -A' and their
memory usage statistics from '/proc/<pid>/smaps_rollup', and report them
as metrics. Do the same for '/proc/meminfo'.
This requires root, so it is done from the host-side Microdroid tests.
Not ideal approach as the reported stats include adbd and its children,
but it is a useful set of data nonetheless.
Test: atest MicrodroidHostTestCases
Change-Id: I24368f7e647a083488ff0d9f485e618876d27f3a
diff --git a/tests/hostside/java/com/android/microdroid/test/MicrodroidTestCase.java b/tests/hostside/java/com/android/microdroid/test/MicrodroidTestCase.java
index fb92467..76bfafb 100644
--- a/tests/hostside/java/com/android/microdroid/test/MicrodroidTestCase.java
+++ b/tests/hostside/java/com/android/microdroid/test/MicrodroidTestCase.java
@@ -36,6 +36,7 @@
import com.android.tradefed.result.TestDescription;
import com.android.tradefed.result.TestResult;
import com.android.tradefed.testtype.DeviceJUnit4ClassRunner;
+import com.android.tradefed.testtype.DeviceJUnit4ClassRunner.TestMetrics;
import com.android.tradefed.testtype.junit4.DeviceTestRunOptions;
import com.android.tradefed.util.CommandResult;
import com.android.tradefed.util.FileUtil;
@@ -58,6 +59,7 @@
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
+import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
@@ -80,6 +82,7 @@
@Rule public TestLogData mTestLogs = new TestLogData();
@Rule public TestName mTestName = new TestName();
+ @Rule public TestMetrics mMetrics = new TestMetrics();
private int minMemorySize() throws DeviceNotAvailableException {
CommandRunner android = new CommandRunner(getDevice());
@@ -545,6 +548,92 @@
shutdownMicrodroid(getDevice(), cid);
}
+ private static class ProcessInfo {
+ public final String mName;
+ public final int mPid;
+
+ ProcessInfo(String name, int pid) {
+ mName = name;
+ mPid = pid;
+ }
+ }
+
+ private Map<String, Long> parseMemInfo(String file) {
+ Map<String, Long> stats = new HashMap<>();
+ file.lines().forEach(line -> {
+ if (line.endsWith(" kB")) line = line.substring(0, line.length() - 3);
+
+ String[] elems = line.split(":");
+ assertThat(elems.length).isEqualTo(2);
+ stats.put(elems[0].trim(), Long.parseLong(elems[1].trim()));
+ });
+ return stats;
+ }
+
+ private String skipFirstLine(String str) {
+ int index = str.indexOf("\n");
+ return (index < 0) ? "" : str.substring(index + 1);
+ }
+
+ private List<ProcessInfo> getRunningProcessesList() {
+ List<ProcessInfo> list = new ArrayList<ProcessInfo>();
+ skipFirstLine(runOnMicrodroid("ps", "-Ao", "PID,NAME")).lines().forEach(ps -> {
+ // Each line is ' <pid> <name>'.
+ ps = ps.trim();
+ int space = ps.indexOf(" ");
+ list.add(new ProcessInfo(
+ ps.substring(space + 1),
+ Integer.parseInt(ps.substring(0, space))));
+ });
+
+ return list;
+ }
+
+ private Map<String, Long> getProcMemInfo() {
+ return parseMemInfo(runOnMicrodroid("cat", "/proc/meminfo"));
+ }
+
+ private Map<String, Long> getProcSmapsRollup(int pid) {
+ String path = "/proc/" + pid + "/smaps_rollup";
+ return parseMemInfo(skipFirstLine(runOnMicrodroid("cat", path, "||", "true")));
+ }
+
+ @Test
+ public void testMicrodroidRamUsage() throws Exception {
+ final String configPath = "assets/vm_config.json";
+ final String cid =
+ startMicrodroid(
+ getDevice(),
+ getBuild(),
+ APK_NAME,
+ PACKAGE_NAME,
+ configPath,
+ /* debug */ true,
+ minMemorySize(),
+ Optional.of(NUM_VCPUS),
+ Optional.of(CPU_AFFINITY));
+ adbConnectToMicrodroid(getDevice(), cid);
+ waitForBootComplete();
+ rootMicrodroid();
+
+ for (Map.Entry<String, Long> stat : getProcMemInfo().entrySet()) {
+ mMetrics.addTestMetric(
+ "avf_perf/microdroid/meminfo/" + stat.getKey().toLowerCase(),
+ stat.getValue().toString());
+ }
+
+ for (ProcessInfo proc : getRunningProcessesList()) {
+ for (Map.Entry<String, Long> stat : getProcSmapsRollup(proc.mPid).entrySet()) {
+ String name = stat.getKey().toLowerCase();
+ mMetrics.addTestMetric(
+ "avf_perf/microdroid/smaps/" + name + "/" + proc.mName,
+ stat.getValue().toString());
+ }
+ }
+
+ shutdownMicrodroid(getDevice(), cid);
+ }
+
@Test
public void testCustomVirtualMachinePermission()
throws DeviceNotAvailableException, IOException, JSONException {