NGEE-Barrow Telemetry Testing

In November 2015 we did some extended testing of the broadband performance in Barrow to/from the BEO. Basically, transmitting to and from a file 10 megabytes large using secure copy to simulate a secure data transfer. Here is a sample chunk of bash script:

#!/bin/bash
#xfer_file=100mbfile
xfer_file=10mbfile
size=$(stat -c%s /home/bob/extras/$xfer_file)

# TROUT to ngeedata using secure copy
# first create the date/time string:
START=`date +%s%N`
CRONTIME=$(date +'"%G-%m-%d %H:%M:00",')
# push the file to fairbanks
scp -oport=2222 /home/bob/extras/$xfer_file bbusey@ngeedata.iarc.uaf.edu:/dev/null
END=`date +%s%N`
ELAPSED=`echo "scale=8; ($END - $START) / 1000000000" | bc`
speed=`echo "$size / $ELAPSED / 1024" | bc`
temp1=$CRONTIME$speed
echo $temp1 >> /home/bob/logs/sled-shed-post_antenna_move_to_fai.csv

Trout placed first at Tram Ethernet Bridge and then second at the sled shed. Grayling placed first in the control shed and then second in the BARC someplace.

This sequence was done for a number of links (and in reverse but for the most part we are concerned with upload speeds), units are kilobytes per second: Tram Ethernet Bridge to the Control Shed Dreamplug: 580 (n=46) Tram Ethernet Bridge to Fairbanks: 77 (n=46) Within the Control Shed: 3661 (n=46) Sled Shed to Fairbanks, before the antenna move: 208 (n=72) Sled Shed to Control Shed: 1405 (n=72) Control Shed to Sled Shed: 223 (n=421) Control Shed to BARC: 2647 (n=49) Control Shed to Fairbanks: 137 (n=254)