diff --git a/src/DurableTask.AzureStorage/AnalyticsEventSource.cs b/src/DurableTask.AzureStorage/AnalyticsEventSource.cs
index ababb3083..5f04c0bca 100644
--- a/src/DurableTask.AzureStorage/AnalyticsEventSource.cs
+++ b/src/DurableTask.AzureStorage/AnalyticsEventSource.cs
@@ -1019,7 +1019,7 @@ public void DiscardingWorkItem(
                 ExtensionVersion);
         }
 
-        [Event(EventIds.ProcessingMessage, Level = EventLevel.Informational, Task = Tasks.Processing, Opcode = EventOpcode.Receive, Version = 5)]
+        [Event(EventIds.ProcessingMessage, Level = EventLevel.Informational, Task = Tasks.Processing, Opcode = EventOpcode.Receive, Version = 6)]
         public void ProcessingMessage(
             Guid relatedActivityId,
             string Account,
@@ -1030,6 +1030,7 @@ public void ProcessingMessage(
             string ExecutionId,
             string MessageId,
             int Age,
+            string PartitionId,
             long SequenceNumber,
             int Episode,
             bool IsExtendedSession,
@@ -1047,6 +1048,7 @@ public void ProcessingMessage(
                 ExecutionId ?? string.Empty,
                 MessageId,
                 Age,
+                PartitionId,
                 SequenceNumber,
                 Episode,
                 IsExtendedSession,
diff --git a/src/DurableTask.AzureStorage/AzureStorageOrchestrationService.cs b/src/DurableTask.AzureStorage/AzureStorageOrchestrationService.cs
index 4dd87b4d2..04a32e9fd 100644
--- a/src/DurableTask.AzureStorage/AzureStorageOrchestrationService.cs
+++ b/src/DurableTask.AzureStorage/AzureStorageOrchestrationService.cs
@@ -752,7 +752,10 @@ async Task<TaskOrchestrationWorkItem> LockNextTaskOrchestrationWorkItemAsync(boo
                         }
                         else
                         {
-                            session.TraceProcessingMessage(message, isExtendedSession: false);
+                            session.TraceProcessingMessage(
+                                message,
+                                isExtendedSession: false,
+                                partitionId: session.ControlQueue.Name);
                         }
                     }
 
@@ -1525,7 +1528,7 @@ public async Task<TaskActivityWorkItem> LockNextTaskActivityWorkItem(
                     });
 
                 TraceMessageReceived(this.settings, session.MessageData, this.azureStorageClient.QueueAccountName);
-                session.TraceProcessingMessage(message, isExtendedSession: false);
+                session.TraceProcessingMessage(message, isExtendedSession: false, this.workItemQueue.Name);
 
                 if (!this.activeActivitySessions.TryAdd(message.Id, session))
                 {
diff --git a/src/DurableTask.AzureStorage/Logging/LogEvents.cs b/src/DurableTask.AzureStorage/Logging/LogEvents.cs
index 721577ab6..0d9f91214 100644
--- a/src/DurableTask.AzureStorage/Logging/LogEvents.cs
+++ b/src/DurableTask.AzureStorage/Logging/LogEvents.cs
@@ -2500,6 +2500,7 @@ public ProcessingMessage(
                 string executionId,
                 string messageId,
                 int age,
+                string partitionId,
                 long sequenceNumber,
                 int episode,
                 bool isExtendedSession)
@@ -2513,6 +2514,7 @@ public ProcessingMessage(
                 this.ExecutionId = executionId;
                 this.MessageId = messageId;
                 this.Age = age;
+                this.PartitionId = partitionId;
                 this.SequenceNumber = sequenceNumber;
                 this.Episode = episode;
                 this.IsExtendedSession = isExtendedSession;
@@ -2544,6 +2546,9 @@ public ProcessingMessage(
             [StructuredLogField]
             public int Age { get; }
 
+            [StructuredLogField]
+            public string PartitionId { get; }
+
             [StructuredLogField]
             public long SequenceNumber { get; }
 
@@ -2572,6 +2577,7 @@ void IEventSourceEvent.WriteEventSource() => AnalyticsEventSource.Log.Processing
                 this.ExecutionId,
                 this.MessageId,
                 this.Age,
+                this.PartitionId,
                 this.SequenceNumber,
                 this.Episode,
                 this.IsExtendedSession,
diff --git a/src/DurableTask.AzureStorage/Logging/LogHelper.cs b/src/DurableTask.AzureStorage/Logging/LogHelper.cs
index 104615ada..e8fe9438e 100644
--- a/src/DurableTask.AzureStorage/Logging/LogHelper.cs
+++ b/src/DurableTask.AzureStorage/Logging/LogHelper.cs
@@ -823,6 +823,7 @@ internal void ProcessingMessage(
             string executionId,
             string messageId,
             int age,
+            string partitionId,
             long sequenceNumber,
             int episode,
             bool isExtendedSession)
@@ -837,6 +838,7 @@ internal void ProcessingMessage(
                 executionId,
                 messageId,
                 age,
+                partitionId,
                 sequenceNumber,
                 episode,
                 isExtendedSession);
diff --git a/src/DurableTask.AzureStorage/Messaging/OrchestrationSession.cs b/src/DurableTask.AzureStorage/Messaging/OrchestrationSession.cs
index f11c82e8b..719694e97 100644
--- a/src/DurableTask.AzureStorage/Messaging/OrchestrationSession.cs
+++ b/src/DurableTask.AzureStorage/Messaging/OrchestrationSession.cs
@@ -114,7 +114,7 @@ public async Task<IList<TaskMessage>> FetchNewOrchestrationMessagesAsync(
             var messages = new List<TaskMessage>(this.CurrentMessageBatch.Count);
             foreach (MessageData msg in this.CurrentMessageBatch)
             {
-                this.TraceProcessingMessage(msg, isExtendedSession: true);
+                this.TraceProcessingMessage(msg, isExtendedSession: true, partitionId: this.ControlQueue.Name);
                 messages.Add(msg.TaskMessage);
             }
 
diff --git a/src/DurableTask.AzureStorage/Messaging/Session.cs b/src/DurableTask.AzureStorage/Messaging/Session.cs
index b0771740f..dc81c9139 100644
--- a/src/DurableTask.AzureStorage/Messaging/Session.cs
+++ b/src/DurableTask.AzureStorage/Messaging/Session.cs
@@ -45,7 +45,7 @@ public void StartNewLogicalTraceScope()
             AnalyticsEventSource.SetLogicalTraceActivityId(this.TraceActivityId);
         }
 
-        public void TraceProcessingMessage(MessageData data, bool isExtendedSession)
+        public void TraceProcessingMessage(MessageData data, bool isExtendedSession, string partitionId)
         {
             if (data == null)
             {
@@ -64,7 +64,8 @@ public void TraceProcessingMessage(MessageData data, bool isExtendedSession)
                 taskMessage.OrchestrationInstance.InstanceId,
                 taskMessage.OrchestrationInstance.ExecutionId,
                 queueMessage.MessageId,
-                Math.Max(0, (int)DateTimeOffset.UtcNow.Subtract(queueMessage.InsertedOn.Value).TotalMilliseconds),
+                age: Math.Max(0, (int)DateTimeOffset.UtcNow.Subtract(queueMessage.InsertedOn.Value).TotalMilliseconds),
+                partitionId,
                 data.SequenceNumber,
                 data.Episode.GetValueOrDefault(-1),
                 isExtendedSession);