diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index 4e795d9..6caa904 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -16,6 +16,7 @@
 package com.android.launcher3.taskbar;
 
 import static android.content.pm.PackageManager.FEATURE_PC;
+import static android.os.Trace.TRACE_TAG_APP;
 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 import static android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
 import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
@@ -46,6 +47,7 @@
 import android.graphics.Rect;
 import android.os.Process;
 import android.os.SystemProperties;
+import android.os.Trace;
 import android.provider.Settings;
 import android.util.Log;
 import android.view.Display;
@@ -266,6 +268,13 @@
         dispatchDeviceProfileChanged();
     }
 
+    @Override
+    public void dispatchDeviceProfileChanged() {
+        super.dispatchDeviceProfileChanged();
+        Trace.instantForTrack(TRACE_TAG_APP, "TaskbarActivityContext#DeviceProfileChanged",
+                getDeviceProfile().toSmallString());
+    }
+
     /**
      * Copy the original DeviceProfile, match the number of hotseat icons and qsb width and update
      * the icon size
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index a7651b6..0114457 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -15,6 +15,7 @@
  */
 package com.android.launcher3.uioverrides;
 
+import static android.os.Trace.TRACE_TAG_APP;
 import static android.view.accessibility.AccessibilityEvent.TYPE_VIEW_FOCUSED;
 
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_HOTSEAT;
@@ -62,6 +63,7 @@
 import android.os.CancellationSignal;
 import android.os.IBinder;
 import android.os.SystemProperties;
+import android.os.Trace;
 import android.view.Display;
 import android.view.HapticFeedbackConstants;
 import android.view.RemoteAnimationTarget;
@@ -1036,6 +1038,13 @@
         return false;
     }
 
+    @Override
+    public void dispatchDeviceProfileChanged() {
+        super.dispatchDeviceProfileChanged();
+        Trace.instantForTrack(TRACE_TAG_APP, "QuickstepLauncher#DeviceProfileChanged",
+                getDeviceProfile().toSmallString());
+    }
+
     private static final class LauncherTaskViewController extends
             TaskViewTouchController<Launcher> {
 
diff --git a/quickstep/src/com/android/quickstep/RecentsActivity.java b/quickstep/src/com/android/quickstep/RecentsActivity.java
index 6f86bf5..f26189c 100644
--- a/quickstep/src/com/android/quickstep/RecentsActivity.java
+++ b/quickstep/src/com/android/quickstep/RecentsActivity.java
@@ -15,6 +15,7 @@
  */
 package com.android.quickstep;
 
+import static android.os.Trace.TRACE_TAG_APP;
 import static android.view.RemoteAnimationTarget.MODE_CLOSING;
 import static android.view.RemoteAnimationTarget.MODE_OPENING;
 
@@ -36,6 +37,7 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
+import android.os.Trace;
 import android.view.Display;
 import android.view.RemoteAnimationAdapter;
 import android.view.RemoteAnimationTarget;
@@ -448,6 +450,13 @@
         return new RecentsAtomicAnimationFactory<>(this);
     }
 
+    @Override
+    public void dispatchDeviceProfileChanged() {
+        super.dispatchDeviceProfileChanged();
+        Trace.instantForTrack(TRACE_TAG_APP, "RecentsActivity#DeviceProfileChanged",
+                getDeviceProfile().toSmallString());
+    }
+
     private AnimatorListenerAdapter resetStateListener() {
         return new AnimatorListenerAdapter() {
             @Override
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index f124940..e4f3614 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -1679,6 +1679,16 @@
         writer.println(prefix + pxToDpStr("getCellLayoutWidth()", getCellLayoutWidth()));
     }
 
+    /** Returns a reduced representation of this DeviceProfile. */
+    public String toSmallString() {
+        return "isTablet:" + isTablet + ", "
+                + "isMultiDisplay:" + isMultiDisplay + ", "
+                + "widthPx:" + widthPx + ", "
+                + "heightPx:" + heightPx + ", "
+                + "insets:" + mInsets + ", "
+                + "rotationHint:" + rotationHint;
+    }
+
     private static Context getContext(Context c, Info info, int orientation, WindowBounds bounds) {
         Configuration config = new Configuration(c.getResources().getConfiguration());
         config.orientation = orientation;