diff --git a/telemetry/definitions/commonDefinitions.json b/telemetry/definitions/commonDefinitions.json
index 1f8e48c7..8e9e06c0 100644
--- a/telemetry/definitions/commonDefinitions.json
+++ b/telemetry/definitions/commonDefinitions.json
@@ -234,6 +234,11 @@
             ],
             "description": "User inputted check type to denote which custom check to run."
         },
+        {
+            "name": "childProcess",
+            "type": "string",
+            "description": "A string representation of a ChildProcess"
+        },
         {
             "name": "cloudWatchLogsPresentation",
             "type": "string",
@@ -1526,6 +1531,11 @@
             "type": "int",
             "description": "Number of generations before the user accepted or rejected"
         },
+        {
+            "name": "numChildProcesses",
+            "type": "int",
+            "description": "number of child processes actively running"
+        },
         {
             "name": "oldVersion",
             "type": "string",
@@ -1774,6 +1784,12 @@
                 "CodeOnly"
             ]
         },
+        {
+            "name": "systemResource", 
+            "type": "string",
+            "allowedValues": ["cpu", "memory"],
+            "description": "The system resource being measured"
+        },
         {
             "name": "target",
             "type": "string",
@@ -5935,6 +5951,20 @@
                 }
             ]
         },
+        { 
+            "name": "ide_childProcessWarning", 
+            "description": "Child Process warning due to high system usage", 
+            "metadata": [ 
+                { 
+                    "type": "childProcess", 
+                    "required": true 
+                },
+                { 
+                    "type": "systemResource", 
+                    "required": true 
+                }
+            ] 
+        }, 
         {
             "name": "ide_editCodeFile",
             "description": "User opened a code file with the given file extension. Client should DEDUPLICATE this metric (ideally hourly/daily). AWS-specific files should (also) emit `file_editAwsFile`.",
@@ -5946,6 +5976,16 @@
                 }
             ]
         },
+        { 
+            "name": "ide_showExtStats", 
+            "description": "Emitted when user invokes show extensions stats command", 
+            "metadata": [ 
+                { 
+                    "type": "numChildProcesses", 
+                    "required": true 
+                } 
+            ] 
+        }, 
         {
             "name": "lambda_configure",
             "description": "Called when opening the local configuration of a Lambda to edit",