Pause/Idle time

Track time during an experiment where no data is sent or received over
the observed NICs.

(Exclude this these times from the calculation of the overall
transmission rates.)

summary.py

@@ -101,6 +101,7 @@ class LogAnalyzer:
         self.recording_end_time = None
 
         self.sums = [0.0] * len(self.watch_fields)
+        self.pause_time = 0
 
         ## Trigger "summarize"
         self._summarize()
@@ -114,9 +115,14 @@ class LogAnalyzer:
         return False
 
     def _sum_line(self, line):
+        # Summarize the values of all watched fields (data send/received).
         for i in range( len(self.sums) ):
             self.sums[i] += line[ self.watch_indices[i] ] * line[self.duration_index]
 
+        # Also, keep track of all intervals in which noting happened (on the NICs).
+        if ( sum([line[i] for i in self.watch_indices]) == 0):
+            self.pause_time += line[self.duration_index]
+
 
 
     def _get_begin(self, line):
@@ -207,7 +213,10 @@ class LogAnalyzer:
             head.append(comment.strip()[:48])
 
         # duration
-        head.append( "Duration: {}".format(human_readable_from_seconds(self.experiment_duration)) )
+        pause = ""
+        if ( self.pause_time > 5 ):
+            pause = "({} of that idle)".format( human_readable_from_seconds(self.pause_time) )
+        head.append( "Duration: {} {}".format(human_readable_from_seconds(self.experiment_duration), pause) )
 
         # requested environment variables
         if ( env ):
@@ -231,7 +240,7 @@ class LogAnalyzer:
 
         rates = list()
         for i in range( len(self.sums) ):
-            speed = self.sums[i] / self.experiment_duration
+            speed = self.sums[i] / (self.experiment_duration-self.pause_time)
 
             number_str = "{:.2f}".format( round(speed / divisor, rounding_digits) )
             bar_str = "{:<20}".format(number_str + " " + unit + "/s")