From cf1b6af8729cfeef35bf75f24892331b28a1fe53 Mon Sep 17 00:00:00 2001
From: Brian Nixon <b_nixon@apple.com>
Date: Fri, 27 Nov 2015 12:42:18 -0800
Subject: [PATCH] Measuring variance in microseconds.
---
.../yahoo/ycsb/measurements/OneMeasurementHistogram.java | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/core/src/main/java/com/yahoo/ycsb/measurements/OneMeasurementHistogram.java b/core/src/main/java/com/yahoo/ycsb/measurements/OneMeasurementHistogram.java
index 7660cd3e..6e2ed0be 100644
--- a/core/src/main/java/com/yahoo/ycsb/measurements/OneMeasurementHistogram.java
+++ b/core/src/main/java/com/yahoo/ycsb/measurements/OneMeasurementHistogram.java
@@ -109,8 +109,8 @@ public class OneMeasurementHistogram extends OneMeasurement
histogram[latency/1000]++;
}
operations++;
- totallatency += latency/1000;
- totalsquaredlatency += ((double)latency) * ((double)latency) / 1000000;
+ totallatency += latency;
+ totalsquaredlatency += ((double)latency) * ((double)latency);
windowoperations++;
windowtotallatency += latency;
@@ -131,8 +131,8 @@ public class OneMeasurementHistogram extends OneMeasurement
double mean = totallatency/((double)operations);
double variance = totalsquaredlatency/((double)operations) - (mean * mean);
exporter.write(getName(), "Operations", operations);
- exporter.write(getName(), "AverageLatency(ms)", mean);
- exporter.write(getName(), "LatencyVariance(ms)", variance);
+ exporter.write(getName(), "AverageLatency(us)", mean);
+ exporter.write(getName(), "LatencyVariance(us)", variance);
exporter.write(getName(), "MinLatency(us)", min);
exporter.write(getName(), "MaxLatency(us)", max);
--
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