diff --git a/core/java/android/os/Trace.java b/core/java/android/os/Trace.java
index 25584f1560844..3508b7031dd36 100644
--- a/core/java/android/os/Trace.java
+++ b/core/java/android/os/Trace.java
@@ -101,6 +101,8 @@ public final class Trace {
     public static final long TRACE_TAG_NNAPI = 1L << 25;
     /** @hide */
     public static final long TRACE_TAG_RRO = 1L << 26;
+    /** @hide */
+    public static final long TRACE_TAG_APEX_MANAGER = 1L << 18;
 
     private static final long TRACE_TAG_NOT_READY = 1L << 63;
     private static final int MAX_SECTION_NAME_LEN = 127;
diff --git a/services/core/java/com/android/server/pm/ApexManager.java b/services/core/java/com/android/server/pm/ApexManager.java
index 42bc464e943fe..a440c62a5f3ce 100644
--- a/services/core/java/com/android/server/pm/ApexManager.java
+++ b/services/core/java/com/android/server/pm/ApexManager.java
@@ -36,6 +36,7 @@ import android.content.pm.parsing.AndroidPackage;
 import android.os.Environment;
 import android.os.RemoteException;
 import android.os.ServiceManager;
+import android.os.Trace;
 import android.sysprop.ApexProperties;
 import android.util.ArrayMap;
 import android.util.ArraySet;
@@ -46,6 +47,7 @@ import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.os.BackgroundThread;
 import com.android.internal.util.IndentingPrintWriter;
+import com.android.server.utils.TimingsTraceAndSlog;
 
 import com.google.android.collect.Lists;
 
@@ -375,8 +377,11 @@ public abstract class ApexManager {
 
         @Override
         public List<ActiveApexInfo> getActiveApexInfos() {
+            final TimingsTraceAndSlog t = new TimingsTraceAndSlog(TAG + "Timing",
+                    Trace.TRACE_TAG_APEX_MANAGER);
             synchronized (mLock) {
                 if (mActiveApexInfosCache == null) {
+                    t.traceBegin("getActiveApexInfos_noCache");
                     try {
                         mActiveApexInfosCache = new ArraySet<>();
                         final ApexInfo[] activePackages = mApexService.getActivePackages();
@@ -387,6 +392,7 @@ public abstract class ApexManager {
                     } catch (RemoteException e) {
                         Slog.e(TAG, "Unable to retrieve packages from apexservice", e);
                     }
+                    t.traceEnd();
                 }
                 if (mActiveApexInfosCache != null) {
                     return new ArrayList<>(mActiveApexInfosCache);