Greg's network link statistics
Greg's diary
Photo index
Greg's home page
Network link stats
Greg's other links
Copyright information
Groogle

This page shows my network availability and performance statistics connected to the Australian National Broadband Network. It bases on earlier pages that I wrote for the DSL and satellite connections.

I had hoped that with the advent of the NBN, this page would no longer be needed. Unfortunately, this has proven not to be the case. While I don't have issues with throughput, the availability has been the worst I have ever experienced, with outages of up to 48 hours. It's not clear where the problem lies, but I have observed serious issues with the DHCP authentication that my ISP uses. More here when I understand the situation better.

The graphs show:

I previously had parameters "link status" and "TCP speed”, but they no longer seem to make much sense.

The graphs were made with gnuplot, and I'm not very happy with the smoothing. In particular, the right-hand side of smoothed graphs has too much influence, and it's easy to get the false impression that the link status or TCP speed have changed significantly in the last few minutes. If anybody can point me at a way to fix this problem, I'd be grateful.

Click on the graphs for a 1600x1200 version.

NBN link statistics NBN link statistics

NBN link statistics NBN link statistics

NBN link statistics NBN link statistics

NBN link statistics NBN link statistics

NBN link statistics NBN link
        statistics

Detailed outage information

This section monitors the NBN link for outages, including planned outages, which currently make up the majority. I have manually edited the data to remove false positives, such as when moving house. I have a program that evaluates the outage information and produces detailed outage information. Here's the information on the past 20 outages, along with the overall statistics:

Start time End time  Duration   Badness        from                    to
                     (seconds)

1523241664 1523242689   1025	  8.471	#  9 April 2018 12:41:04  9 April 2018 12:58:09
1523248702 1523248836    134	  0.599	#  9 April 2018 14:38:22  9 April 2018 14:40:36
1523250998 1523252201   1203	  1.665	#  9 April 2018 15:16:38  9 April 2018 15:36:41
1523252625 1523253946   1321	  8.491	#  9 April 2018 15:43:45  9 April 2018 16:05:46
1523254277 1523254426    149	 10.876	#  9 April 2018 16:11:17  9 April 2018 16:13:46
1523555176 1523555279    103	  0.012	# 13 April 2018 03:46:16 13 April 2018 03:47:59
1523555906 1523556346    440	  5.742	# 13 April 2018 03:58:26 13 April 2018 04:05:46
1523556973 1523557076    103	  5.742	# 13 April 2018 04:16:13 13 April 2018 04:17:56
1523558818 1523558921    103	  2.067	# 13 April 2018 04:46:58 13 April 2018 04:48:41
1523561880 1523561981    101	  1.217	# 13 April 2018 05:38:00 13 April 2018 05:39:41
1524453393 1524453496    103	  0.004	# 23 April 2018 13:16:33 23 April 2018 13:18:16
1524453914 1524454018    104	  8.612	# 23 April 2018 13:25:14 23 April 2018 13:26:58
1524457159 1524457611    452	  1.146	# 23 April 2018 14:19:19 23 April 2018 14:26:51
1524459045 1524461077   2032	  2.510	# 23 April 2018 14:50:45 23 April 2018 15:24:37
1524461404 1524462031    627	 11.009	# 23 April 2018 15:30:04 23 April 2018 15:40:31
1524462672 1524462830    158	  5.616	# 23 April 2018 15:51:12 23 April 2018 15:53:50
1524463199 1524463269     70	  9.756	# 23 April 2018 15:59:59 23 April 2018 16:01:09
1524463514 1524463652    138	 14.694	# 23 April 2018 16:05:14 23 April 2018 16:07:32
1524463776 1524466190   2414	 29.032	# 23 April 2018 16:09:36 23 April 2018 16:49:50
1524559250 1524559455    205	  0.039	# 24 April 2018 18:40:50 24 April 2018 18:44:15

Total 318 outages, total time 701324 seconds (8 days, 02:48:44)
Average time between outages:	416551 seconds (4 days, 19:42:31)
Average duration:		2205 seconds (00:36:45)
Availability:			99.47%
      

“Badness” is an attempt to quantify the effect. It's the reciprocal of the number of seconds per hour that the link was up between failures (i.e. 3600 / uptime).

And here is the summary information for the past 10 days with a less than 100% record:

Date        Outages   Duration  Availability    Date
                      (seconds)
1516712400	  2	  4192	 95.15%	# 24 January 2018
1517058000	  1	   843	 99.02%	# 28 January 2018
1519131600	  1	   276	 99.68%	# 21 February 2018
1521032400	  1	 26968	 68.79%	# 15 March 2018
1522069200	  2	 27326	 68.37%	# 27 March 2018
1522764000	  1	  1225	 98.58%	#  4 April 2018
1523196000	  6	  3935	 95.45%	#  9 April 2018
1523541600	  5	   850	 99.02%	# 13 April 2018
1524405600	  9	  6098	 92.94%	# 23 April 2018
1524492000	  1	   205	 99.76%	# 24 April 2018
      

The dates in the left columns are in UNIX time_t format to ease further processing. I also have lists of all individual outages, or summaries per day.


Greg's home page Greg's diary Greg's photos Copyright

Valid XHTML 1.0!

$Id: nbnstats.php,v 1.6 2018/01/28 06:40:25 grog Exp $