diff --git a/core/src/main/scala/spark/scheduler/SparkListener.scala b/core/src/main/scala/spark/scheduler/SparkListener.scala
index 951fe1ae3b..f97164669e 100644
--- a/core/src/main/scala/spark/scheduler/SparkListener.scala
+++ b/core/src/main/scala/spark/scheduler/SparkListener.scala
@@ -16,17 +16,24 @@ case class StageCompleted(val stageInfo: StageInfo) extends SparkListenerEvents
 class StatsReportListener extends SparkListener with Logging {
   def onStageCompleted(stageCompleted: StageCompleted) {
     import spark.scheduler.StatsReportListener._
-    logInfo("Finished stage: " + stageCompleted.stageInfo)
+    this.logInfo("Finished stage: " + stageCompleted.stageInfo)
     showMillisDistribution("task runtime:", stageCompleted.stageInfo.getTaskRuntimeDistribution)
     showBytesDistribution("shuffle bytes written:", stageCompleted.stageInfo.getShuffleBytesWrittenDistribution)
+
+    //fetch & some io info
     showMillisDistribution("fetch wait time:",stageCompleted.stageInfo.getRemoteFetchWaitTimeDistribution)
     showBytesDistribution("remote bytes read:", stageCompleted.stageInfo.getRemoteBytesReadDistribution)
     showBytesDistribution("task result size:", stageCompleted.stageInfo.getTaskResultSizeDistribution)
+
+    //runtime breakdown
+    showDistribution("executor (non-fetch) time pct: ", stageCompleted.stageInfo.getExectuorRuntimePercentage, "%2.0f \\%")
+    showDistribution("fetch wait time pct: ", stageCompleted.stageInfo.getFetchRuntimePercentage, "%2.0f \\%")
+    showDistribution("other time pct: ", stageCompleted.stageInfo.getOtherRuntimePercentage, "%2.0f \\%")
   }
 
 }
 
-object StatsReportListener {
+object StatsReportListener extends Logging {
 
   //for profiling, the extremes are more interesting
   val percentiles = Array[Int](0,5,10,25,50,75,90,95,100)
diff --git a/core/src/main/scala/spark/scheduler/StageInfo.scala b/core/src/main/scala/spark/scheduler/StageInfo.scala
index 299f43d1c5..ac02d3445c 100644
--- a/core/src/main/scala/spark/scheduler/StageInfo.scala
+++ b/core/src/main/scala/spark/scheduler/StageInfo.scala
@@ -30,6 +30,43 @@ case class StageInfo(
   }
 
   def getTaskResultSizeDistribution = {
-    Distribution(taskMetrics.flatMap{_.resultSize.map{_.toDouble}})
+    Distribution(taskMetrics.map{_.resultSize.toDouble})
+  }
+
+  lazy val runtimePercentages = taskMetrics.zip(taskInfos).map{
+    case (metrics, info) => RuntimePercentage(info.duration, metrics)
+  }
+
+  /**
+   * distribution of the percentage of task runtime of the executor itself, excluding time spent waiting on a fetch
+   */
+  def getExectuorRuntimePercentage = {
+    Distribution(runtimePercentages.map{_.executorPct})
+  }
+
+  /**
+   * distribution of the percentage of task runtime spent waiting on a fetch
+   */
+  def getFetchRuntimePercentage = {
+    Distribution(runtimePercentages.flatMap{_.fetchPct})
+  }
+
+  /**
+   * distribution of the percentage of task runtime spent not waiting on fetch, and not actively executing on
+   * a remote machine (eg., serializing task, sending it over network, sending results back over network)
+   */
+  def getOtherRuntimePercentage = {
+    Distribution(runtimePercentages.map{_.other})
+  }
+}
+
+private[spark] case class RuntimePercentage(executorPct: Double, fetchPct: Option[Double], other: Double)
+private[spark] object RuntimePercentage {
+  def apply(totalTime: Long, metrics: TaskMetrics): RuntimePercentage = {
+    val denom = totalTime.toDouble
+    val fetch = metrics.remoteFetchWaitTime.map{_ / denom}
+    val exec = (metrics.executorRunTime - metrics.remoteFetchWaitTime.getOrElse(0l)) / denom
+    val other = 1.0 - (exec + fetch.getOrElse(0d))
+    RuntimePercentage(exec, fetch, other)
   }
 }