diff --git a/pom.xml b/pom.xml
index d166644..1bb3004 100644
--- a/pom.xml
+++ b/pom.xml
@@ -127,7 +127,7 @@
     <dependency>
       <groupId>com.google.cloud.genomics</groupId>
       <artifactId>google-genomics-utils</artifactId>
-      <version>v1beta2-0.32</version>
+      <version>v1beta2-0.33</version>
       <exclusions>
         <!-- Exclude an old version of guava which is being pulled
              in by a transitive dependency google-api-client 1.19.0 -->
@@ -148,6 +148,11 @@
       <artifactId>gov.nist.math.jama</artifactId>
       <version>1.1.1</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-math3</artifactId>
+      <version>3.2</version>
+    </dependency>
     <dependency>
       <groupId>org.reflections</groupId>
       <artifactId>reflections</artifactId>
@@ -203,7 +208,7 @@
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
       <version>3.0.0-alpha-3</version>
-    </dependency>   
+    </dependency>
   </dependencies>
 
   <profiles>
diff --git a/src/main/java/com/google/cloud/genomics/dataflow/readers/ReadStreamer.java b/src/main/java/com/google/cloud/genomics/dataflow/readers/ReadStreamer.java
index 9dc2b95..dcf3643 100644
--- a/src/main/java/com/google/cloud/genomics/dataflow/readers/ReadStreamer.java
+++ b/src/main/java/com/google/cloud/genomics/dataflow/readers/ReadStreamer.java
@@ -17,9 +17,11 @@
 import java.security.GeneralSecurityException;
 import java.util.Iterator;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 
 import com.google.cloud.dataflow.sdk.transforms.Aggregator;
 import com.google.cloud.dataflow.sdk.transforms.DoFn;
+import com.google.cloud.dataflow.sdk.transforms.Max;
 import com.google.cloud.dataflow.sdk.transforms.PTransform;
 import com.google.cloud.dataflow.sdk.transforms.ParDo;
 import com.google.cloud.dataflow.sdk.transforms.Sum;
@@ -27,6 +29,7 @@
 import com.google.cloud.genomics.utils.GenomicsFactory;
 import com.google.cloud.genomics.utils.ShardBoundary;
 import com.google.cloud.genomics.utils.grpc.ReadStreamIterator;
+import com.google.common.base.Stopwatch;
 import com.google.genomics.v1.Read;
 import com.google.genomics.v1.StreamReadsRequest;
 import com.google.genomics.v1.StreamReadsResponse;
@@ -65,20 +68,26 @@ private class RetrieveReads extends DoFn<StreamReadsRequest, List<Read>> {
 
     protected Aggregator<Integer, Integer> initializedShardCount;
     protected Aggregator<Integer, Integer> finishedShardCount;
+    protected Aggregator<Long, Long> shardTimeMaxSec;
 
     public RetrieveReads() {
       initializedShardCount = createAggregator("Initialized Shard Count", new Sum.SumIntegerFn());
       finishedShardCount = createAggregator("Finished Shard Count", new Sum.SumIntegerFn());
+      shardTimeMaxSec = createAggregator("Maximum Shard Processing Time (sec)", new Max.MaxLongFn());
     }
 
     @Override
     public void processElement(ProcessContext c) throws IOException, GeneralSecurityException {
       initializedShardCount.addValue(1);
+      shardTimeMaxSec.addValue(0L);
+      Stopwatch stopWatch = Stopwatch.createStarted();
       Iterator<StreamReadsResponse> iter = new ReadStreamIterator(c.element(), auth, shardBoundary, fields);
       while (iter.hasNext()) {
         StreamReadsResponse readResponse = iter.next();
         c.output(readResponse.getAlignmentsList());
       }
+      stopWatch.stop();
+      shardTimeMaxSec.addValue(stopWatch.elapsed(TimeUnit.SECONDS));
       finishedShardCount.addValue(1);
     }
   }
diff --git a/src/main/java/com/google/cloud/genomics/dataflow/readers/VariantStreamer.java b/src/main/java/com/google/cloud/genomics/dataflow/readers/VariantStreamer.java
index fcf8ba2..94ec6fa 100644
--- a/src/main/java/com/google/cloud/genomics/dataflow/readers/VariantStreamer.java
+++ b/src/main/java/com/google/cloud/genomics/dataflow/readers/VariantStreamer.java
@@ -17,9 +17,15 @@
 import java.security.GeneralSecurityException;
 import java.util.Iterator;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.commons.math3.stat.descriptive.DescriptiveStatistics;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.cloud.dataflow.sdk.transforms.Aggregator;
 import com.google.cloud.dataflow.sdk.transforms.DoFn;
+import com.google.cloud.dataflow.sdk.transforms.Max;
 import com.google.cloud.dataflow.sdk.transforms.PTransform;
 import com.google.cloud.dataflow.sdk.transforms.ParDo;
 import com.google.cloud.dataflow.sdk.transforms.Sum;
@@ -27,6 +33,7 @@
 import com.google.cloud.genomics.utils.GenomicsFactory;
 import com.google.cloud.genomics.utils.ShardBoundary;
 import com.google.cloud.genomics.utils.grpc.VariantStreamIterator;
+import com.google.common.base.Stopwatch;
 import com.google.genomics.v1.StreamVariantsRequest;
 import com.google.genomics.v1.StreamVariantsResponse;
 import com.google.genomics.v1.Variant;
@@ -37,6 +44,7 @@
 public class VariantStreamer extends
 PTransform<PCollection<StreamVariantsRequest>, PCollection<Variant>> {
 
+  private static final Logger LOG = LoggerFactory.getLogger(VariantStreamer.class);
   protected final GenomicsFactory.OfflineAuth auth;
   protected final ShardBoundary.Requirement shardBoundary;
   protected final String fields;
@@ -63,25 +71,33 @@ public PCollection<Variant> apply(PCollection<StreamVariantsRequest> input) {
   private class RetrieveVariants extends DoFn<StreamVariantsRequest, List<Variant>> {
 
     protected Aggregator<Integer, Integer> initializedShardCount;
-    protected Aggregator<Long, Long> itemCount;
     protected Aggregator<Integer, Integer> finishedShardCount;
+    protected Aggregator<Long, Long> shardTimeMaxSec;
+    DescriptiveStatistics stats;
 
     public RetrieveVariants() {
       initializedShardCount = createAggregator("Initialized Shard Count", new Sum.SumIntegerFn());
-      itemCount = createAggregator("Number of variant lists", new Sum.SumLongFn());
       finishedShardCount = createAggregator("Finished Shard Count", new Sum.SumIntegerFn());
+      shardTimeMaxSec = createAggregator("Maximum Shard Processing Time (sec)", new Max.MaxLongFn());
+      stats = new DescriptiveStatistics(500);
     }
 
     @Override
     public void processElement(ProcessContext c) throws IOException, GeneralSecurityException, InterruptedException {
       initializedShardCount.addValue(1);
+      shardTimeMaxSec.addValue(0L);
+      Stopwatch stopWatch = Stopwatch.createStarted();
       Iterator<StreamVariantsResponse> iter = new VariantStreamIterator(c.element(), auth, shardBoundary, fields);
       while (iter.hasNext()) {
         StreamVariantsResponse variantResponse = iter.next();
         c.output(variantResponse.getVariantsList());
-        itemCount.addValue(1L);
       }
+      stopWatch.stop();
+      shardTimeMaxSec.addValue(stopWatch.elapsed(TimeUnit.SECONDS));
+      stats.addValue(stopWatch.elapsed(TimeUnit.SECONDS));
       finishedShardCount.addValue(1);
+      LOG.info("Shard Duration in Seconds - Min: " + stats.getMin() + " Max: " + stats.getMax() +
+          " Avg: " + stats.getMean() + " StdDev: " + stats.getStandardDeviation());      
     }
   }