Display average time between collections

runtime/bin/vmservice/client/lib/src/service/object.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of service;
 
 /// A [ServiceObject] is an object known to the VM service and is tied
 /// to an owning [Isolate].
 abstract class ServiceObject extends Observable {
   /// The owner of this [ServiceObject].  This can be an [Isolate], a
@@ skipping 477 matching lines @@
     }
   }
 }
 
 class HeapSpace extends Observable {
   @observable int used = 0;
   @observable int capacity = 0;
   @observable int external = 0;
   @observable int collections = 0;
   @observable double totalCollectionTimeInSeconds = 0.0;
+  @observable double averageCollectionPeriodInMillis = 0.0;
 
   void update(Map heapMap) {
     used = heapMap['used'];
     capacity = heapMap['capacity'];
     external = heapMap['external'];
     collections = heapMap['collections'];
     totalCollectionTimeInSeconds = heapMap['time'];
+    averageCollectionPeriodInMillis = heapMap['avgCollectionPeriodMillis'];
   }
 }
 
 /// State for a running isolate.
 class Isolate extends ServiceObjectOwner {
   @reflectable VM get vm => owner;
   @reflectable Isolate get isolate => this;
   @observable ObservableMap counters = new ObservableMap();
 
   String get link => '/${_id}';
@@ skipping 1312 matching lines @@
     var v = list[i];
     if ((v is ObservableMap) && _isServiceMap(v)) {
       list[i] = owner.getFromMap(v);
     } else if (v is ObservableList) {
       _upgradeObservableList(v, owner);
     } else if (v is ObservableMap) {
       _upgradeObservableMap(v, owner);
     }
   }
 }