diff --git a/app/lib/components/benchmark_grid.dart b/app/lib/components/benchmark_grid.dart
index 9ef4b9fa89..74f948f8e1 100644
--- a/app/lib/components/benchmark_grid.dart
+++ b/app/lib/components/benchmark_grid.dart
@@ -55,6 +55,7 @@ class BenchmarkGrid implements OnInit, OnDestroy {
 @Component(
   selector: 'benchmark-card',
   template: r'''
+<span class="metric-task-name">{{taskName}}</span>
 <div class="metric" *ngIf="latestValue != null">
   <span class="metric-value">{{latestValue}}</span>
   <span class="metric-unit">{{unit}}</span>
@@ -75,6 +76,7 @@ class BenchmarkCard implements AfterViewInit {
   }
 
   String get id => _data.timeseries.timeseries.id;
+  String get taskName => _data.timeseries.timeseries.taskName;
   String get label => _data.timeseries.timeseries.label;
   String get unit => _data.timeseries.timeseries.unit;
   String get latestValue {
@@ -102,7 +104,7 @@ class BenchmarkCard implements AfterViewInit {
     for (TimeseriesValue value in _data.values.reversed) {
       DivElement bar = new DivElement()
         ..classes.add('metric-value-bar')
-        ..style.height = '${80 * value.value / maxValue}px';
+        ..style.height = '${100 * value.value / maxValue}px';
 
       DivElement tooltip;
       bar.onMouseOver.listen((_) {
diff --git a/app/lib/model.dart b/app/lib/model.dart
index e2140b39aa..6c390ae052 100644
--- a/app/lib/model.dart
+++ b/app/lib/model.dart
@@ -253,6 +253,7 @@ class Timeseries extends Entity {
     (Map<String, dynamic> props) => new Timeseries(props),
     <String, JsonSerializer>{
       'ID': string(),
+      'TaskName': string(),
       'Label': string(),
       'Unit': string(),
     }
@@ -261,6 +262,7 @@ class Timeseries extends Entity {
   Timeseries([Map<String, dynamic> props]) : super(_serializer, props);
 
   String get id => this['ID'];
+  String get taskName => this['TaskName'];
   String get label => this['Label'];
   String get unit => this['Unit'];
 }
diff --git a/app/web/benchmarks.css b/app/web/benchmarks.css
index 0374f8e037..e9bcb62672 100644
--- a/app/web/benchmarks.css
+++ b/app/web/benchmarks.css
@@ -25,7 +25,7 @@ benchmark-card {
   display: inline-block;
   position: relative;
   width: 250px;
-  height: 80px;
+  height: 100px;
   padding: 0;
   margin: 5px;
 
@@ -42,7 +42,7 @@ benchmark-card {
 
 .metric {
   position: absolute;
-  top: 5px;
+  top: 25px;
   left: 5px;
   pointer-events: none;
 }
@@ -72,6 +72,13 @@ benchmark-card {
   color: #CCC;
 }
 
+.metric-task-name {
+  position: absolute;
+  top: 5px;
+  left: 5px;
+  pointer-events: none;
+}
+
 .metric-label {
   position: absolute;
   bottom: 5px;
diff --git a/commands/update_task_status.go b/commands/update_task_status.go
index cf55a90146..b62c0ae5b8 100644
--- a/commands/update_task_status.go
+++ b/commands/update_task_status.go
@@ -74,7 +74,7 @@ func UpdateTaskStatus(c *db.Cocoon, inputJSON []byte) (interface{}, error) {
 
 	if newStatus == db.TaskSucceeded && len(command.BenchmarkScoreKeys) > 0 {
 		for _, scoreKey := range command.BenchmarkScoreKeys {
-			series, err := c.GetOrCreateTimeseries(scoreKey)
+			series, err := c.GetOrCreateTimeseries(task.Task.Name, scoreKey)
 
 			if err != nil {
 				return nil, err
diff --git a/db/db.go b/db/db.go
index 24fe77a81d..2111526ea9 100644
--- a/db/db.go
+++ b/db/db.go
@@ -585,8 +585,9 @@ func (t *Task) AgeInMillis() int64 {
 
 // GetOrCreateTimeseries fetches an existing timeseries, or creates and returns
 // a new one if one with the given scoreKey does not yet exist.
-func (c *Cocoon) GetOrCreateTimeseries(scoreKey string) (*TimeseriesEntity, error) {
-	key := datastore.NewKey(c.Ctx, "Timeseries", scoreKey, 0, nil)
+func (c *Cocoon) GetOrCreateTimeseries(taskName string, scoreKey string) (*TimeseriesEntity, error) {
+	id := fmt.Sprintf("%v.%v", taskName, scoreKey)
+	key := datastore.NewKey(c.Ctx, "Timeseries", id, 0, nil)
 
 	series := new(Timeseries)
 	err := datastore.Get(c.Ctx, key, series)
@@ -606,7 +607,8 @@ func (c *Cocoon) GetOrCreateTimeseries(scoreKey string) (*TimeseriesEntity, erro
 	// By default use scoreKey as label and "ms" as unit. It can be tweaked
 	// manually later using the datastore UI.
 	series = &Timeseries{
-		ID:    scoreKey,
+		ID:    id,
+		TaskName: taskName,
 		Label: scoreKey,
 		Unit:  "ms",
 	}
diff --git a/db/schema.go b/db/schema.go
index 18087d149d..a3a0eadb15 100644
--- a/db/schema.go
+++ b/db/schema.go
@@ -85,6 +85,8 @@ type Task struct {
 type Timeseries struct {
 	// Unique ID for computer consumption.
 	ID string
+	// Name of task that submits values for this series.
+	TaskName string
 	// A name used to display the series to humans.
 	Label string
 	// The unit used for the values, e.g. "ms", "kg", "pumpkins".