Utils-eurocon: inactive timespan for session

check download/upload speed evolution

diff --git a/Utils/test-socket-signal/test/process/get_inactive_timespan b/Utils/test-socket-signal/test/process/get_inactive_timespan
new file mode 100755 (executable)
index 0000000..0d7a55c
--- /dev/null
+++ b/Utils/test-socket-signal/test/process/get_inactive_timespan
@@ -0,0 +1,52 @@
+#!/usr/bin/awk -f
+
+#
+# find timespan of inactivity
+#
+# provide evolution of speed in a column at standard input
+#
+# start point is when speed is lower with MAX_SPEED/RATE than maximum speed
+# that far; stop point is when download speed is higher with MAX_SPEED/RATE
+# than minimium speed that far
+#
+
+BEGIN  {
+       MAX_SPEED = 100.0;
+       RATE = 0.15;
+       THRESHOLD = MAX_SPEED * RATE;
+       STATE_NO_STATE = 0;
+       STATE_GET_INACTIVITY = 1;
+       STATE_GET_ACTIVITY = 2;
+
+       state = STATE_GET_INACTIVITY;
+       max_speed_so_far = 0;
+       min_speed_so_far = MAX_SPEED;
+       counter = 0;
+       start_time = 0;
+       stop_time = 0;
+}
+
+{
+       curr_speed = $1;
+       if (state == STATE_GET_INACTIVITY) {
+               if (curr_speed > max_speed_so_far)
+                       max_speed_so_far = curr_speed;
+               else if (curr_speed < max_speed_so_far - THRESHOLD) {
+                       start = counter;
+                       state = STATE_GET_ACTIVITY;
+               }
+       }
+       else if (state == STATE_GET_ACTIVITY) {
+               if (curr_speed < min_speed_so_far)
+                       min_speed_so_far = curr_speed;
+               else if (curr_speed > min_speed_so_far + THRESHOLD) {
+                       stop = counter;
+                       state = STATE_NOSTATE;
+               }
+       }
+       counter++;
+}
+
+END    {
+       printf "start: %d, stop: %d, diff: %d\n", start, stop, stop - start;
+}