--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PerfsDb/TestResult.py	Thu Aug 16 17:13:32 2018 +0200
@@ -0,0 +1,36 @@
+import time
+import statistics
+from orthancRestApi import OrthancClient
+
+class TestResult:
+
+    def __init__(self, name: str):
+        self.minTimeInMs = 0
+        self.maxTimeInMs = 0
+        self.averageTimeInMs = 0
+        self.name = name
+        self._durations = []
+        
+    def add(self, durationInMs: float):
+        self._durations.append(durationInMs)
+
+    def compute(self):
+
+        mean = statistics.mean(self._durations)
+        stdDev = statistics.stdev(self._durations)
+
+        # remove outliers
+        cleanedDurations = [x for x in self._durations if (x > mean - 2*stdDev) and (x < mean + 2*stdDev)]
+        
+        self.averageTimeInMs = statistics.mean(cleanedDurations)
+        self.minTimeInMs = min(cleanedDurations)
+        self.maxTimeInMs = max(cleanedDurations)
+
+
+    def __str__(self):
+        return "{name:<40}: {avg:>8.2f} ms {min:>8.2f} ms {max:>8.2f} ms".format(
+            name=self.name,
+            avg = self.averageTimeInMs,
+            min=self.minTimeInMs,
+            max=self.maxTimeInMs
+        )
\ No newline at end of file