--- a/layout/base/PresShell.cpp
+++ b/layout/base/PresShell.cpp
@@ -8054,40 +8054,63 @@ PresShell::HandleEventInternal(WidgetEve
           // Allow keys other than ESC and modifiers be marked as a
           // valid user input for triggering popup, fullscreen, and
           // pointer lock.
           isHandlingUserInput = true;
           mPresContext->RecordInteractionTime(
             nsPresContext::InteractionType::eKeyInteraction,
             aEvent->mTimeStamp);
         }
+
+        Telemetry::AccumulateTimeDelta(Telemetry::KEYBOARD_EVENT_RECEIVED_MS, aEvent->mTimeStamp);
         break;
       }
       case eMouseDown:
       case eMouseUp:
+        Telemetry::AccumulateTimeDelta(Telemetry::MOUSE_CLICK_EVENT_RECEIVED_MS, aEvent->mTimeStamp);
       case ePointerDown:
       case ePointerUp:
         isHandlingUserInput = true;
         mPresContext->RecordInteractionTime(
           nsPresContext::InteractionType::eClickInteraction,
           aEvent->mTimeStamp);
         break;
 
+      case eMouseMove:
+        if (aEvent->mFlags.mHandledByAPZ) {
+          Telemetry::AccumulateTimeDelta(Telemetry::APZ_HANDLED_MOUSE_MOVE_EVENT_RECEIVED_MS, aEvent->mTimeStamp);
+        } else {
+          Telemetry::AccumulateTimeDelta(Telemetry::MOUSE_MOVE_EVENT_RECEIVED_MS, aEvent->mTimeStamp);
+        }
+        break;
+
       case eDrop: {
         nsCOMPtr<nsIDragSession> session = nsContentUtils::GetDragSession();
         if (session) {
           bool onlyChromeDrop = false;
           session->GetOnlyChromeDrop(&onlyChromeDrop);
           if (onlyChromeDrop) {
             aEvent->mFlags.mOnlyChromeDispatch = true;
           }
         }
         break;
       }
 
+      case eWheel:
+        if (aEvent->mFlags.mHandledByAPZ) {
+          Telemetry::AccumulateTimeDelta(Telemetry::APZ_HANDLED_WHEEL_EVENT_RECEIVED_MS, aEvent->mTimeStamp);
+        }
+        break;
+
+      case eTouchMove:
+        if (aEvent->mFlags.mHandledByAPZ) {
+          Telemetry::AccumulateTimeDelta(Telemetry::APZ_HANDLED_TOUCH_MOVE_EVENT_RECEIVED_MS, aEvent->mTimeStamp);
+        }
+        break;
+
       default:
         break;
       }
 
       if (!mTouchManager.PreHandleEvent(aEvent, aStatus,
                                         touchIsNew, isHandlingUserInput,
                                         mCurrentEventContent)) {
         return NS_OK;

--- a/toolkit/components/telemetry/Histograms.json
+++ b/toolkit/components/telemetry/Histograms.json
@@ -11047,10 +11047,64 @@
     "alert_emails": ["mlayzell@mozilla.com"],
     "bug_numbers": [1342635],
     "expires_in_version": "60",
     "kind": "exponential",
     "high": 500,
     "n_buckets": 20,
     "keyed": true,
     "description": "Measures the number of milliseconds we spend waiting on the main thread for IPC messages to serialize their parameters. Note: only messages that take more than 500 microseconds are included in this probe. This probe is keyed on the IPDL message name."
+  },
+  "MOUSE_MOVE_EVENT_RECEIVED_MS": {
+    "alert_emails": ["wpan@mozilla.com"],
+    "expires_in_version": "60",
+    "kind": "exponential",
+    "high": 50000,
+    "n_buckets": 100,
+    "bug_numbers": [1341531],
+    "description": "Time (ms) for the mouse move event to dispatch, but before handlers executing."
+  },
+  "MOUSE_CLICK_EVENT_RECEIVED_MS": {
+    "alert_emails": ["wpan@mozilla.com"],
+    "expires_in_version": "60",
+    "kind": "exponential",
+    "high": 50000,
+    "n_buckets": 100,
+    "bug_numbers": [1341531],
+    "description": "Time (ms) for the mouse click event to dispatch, but before handlers executing."
+  },
+  "KEYBOARD_EVENT_RECEIVED_MS": {
+    "alert_emails": ["wpan@mozilla.com"],
+    "expires_in_version": "60",
+    "kind": "exponential",
+    "high": 50000,
+    "n_buckets": 100,
+    "bug_numbers": [1341531],
+    "description": "Time (ms) for the keyboard event to dispatch, but before handlers executing."
+  },
+  "APZ_HANDLED_TOUCH_MOVE_EVENT_RECEIVED_MS": {
+    "alert_emails": ["wpan@mozilla.com"],
+    "expires_in_version": "60",
+    "kind": "exponential",
+    "high": 50000,
+    "n_buckets": 100,
+    "bug_numbers": [1341531],
+    "description": "Time (ms) for the APZ handled touch move event to dispatch, but before handlers executing."
+  },
+  "APZ_HANDLED_MOUSE_MOVE_EVENT_RECEIVED_MS": {
+    "alert_emails": ["wpan@mozilla.com"],
+    "expires_in_version": "60",
+    "kind": "exponential",
+    "high": 50000,
+    "n_buckets": 100,
+    "bug_numbers": [1341531],
+    "description": "Time (ms) for the APZ handled mouse move event to dispatch, but before handlers executing."
+  },
+  "APZ_HANDLED_WHEEL_EVENT_RECEIVED_MS": {
+    "alert_emails": ["wpan@mozilla.com"],
+    "expires_in_version": "60",
+    "kind": "exponential",
+    "high": 50000,
+    "n_buckets": 100,
+    "bug_numbers": [1341531],
+    "description": "Time (ms) for the APZ handled wheel event to dispatch, but before handlers executing."
   }
 }