Consistently report latency in us(95/99 percentile were reporting ms)

core/src/main/java/com/yahoo/ycsb/measurements/OneMeasurementHdrHistogram.java

@@ -99,8 +99,8 @@ public class OneMeasurementHdrHistogram extends OneMeasurement {
     exporter.write(getName(), "AverageLatency(us)", totalHistogram.getMean());
     exporter.write(getName(), "MinLatency(us)", totalHistogram.getMinValue());
     exporter.write(getName(), "MaxLatency(us)", totalHistogram.getMaxValue());
-    exporter.write(getName(), "95thPercentileLatency(ms)", totalHistogram.getValueAtPercentile(90)/1000);
-    exporter.write(getName(), "99thPercentileLatency(ms)", totalHistogram.getValueAtPercentile(99)/1000);
+    exporter.write(getName(), "95thPercentileLatency(us)", totalHistogram.getValueAtPercentile(90));
+    exporter.write(getName(), "99thPercentileLatency(us)", totalHistogram.getValueAtPercentile(99));
     
     exportReturnCodes(exporter);
   }

core/src/main/java/com/yahoo/ycsb/measurements/OneMeasurementHistogram.java

@@ -109,12 +109,12 @@ public class OneMeasurementHistogram extends OneMeasurement
       opcounter+=histogram[i];
       if ( (!done95th) && (((double)opcounter)/((double)operations)>=0.95) )
       {
-        exporter.write(getName(), "95thPercentileLatency(ms)", i);
+        exporter.write(getName(), "95thPercentileLatency(us)", i*1000);
         done95th=true;
       }
       if (((double)opcounter)/((double)operations)>=0.99)
       {
-        exporter.write(getName(), "99thPercentileLatency(ms)", i);
+        exporter.write(getName(), "99thPercentileLatency(us)", i*1000);
         break;
       }
     }