Image of grog
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. 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)

1644437903 1644437973     70	 14.694	# 10 February 2022 07:18:23 10 February 2022 07:19:33
1644519268 1644519349     81	  0.044	# 11 February 2022 05:54:28 11 February 2022 05:55:49
1644598961 1644598965      4	  0.045	# 12 February 2022 04:02:41 12 February 2022 04:02:45
1644789211 1644789391    180	  0.019	# 14 February 2022 08:53:31 14 February 2022 08:56:31
1644849074 1644849077      3	  0.060	# 15 February 2022 01:31:14 15 February 2022 01:31:17
1645030936 1645032158   1222	  0.020	# 17 February 2022 04:02:16 17 February 2022 04:22:38
1645192327 1645192507    180	  0.022	# 19 February 2022 00:52:07 19 February 2022 00:55:07
1645546584 1645547001    417	  0.010	# 23 February 2022 03:16:24 23 February 2022 03:23:21
1645631129 1645631153     24	  0.043	# 24 February 2022 02:45:29 24 February 2022 02:45:53
1649795093 1649799454   4361	  0.001	# 13 April 2022 06:24:53 13 April 2022 07:37:34
1649800745 1649800959    214	  2.789	# 13 April 2022 07:59:05 13 April 2022 08:02:39
1649801168 1649801731    563	 17.225	# 13 April 2022 08:06:08 13 April 2022 08:15:31
1650430130 1650430456    326	  0.006	# 20 April 2022 14:48:50 20 April 2022 14:54:16
1652292259 1652292361    102	  0.002	# 12 May 2022 04:04:19 12 May 2022 04:06:01
1652293810 1652296705   2895	  2.484	# 12 May 2022 04:30:10 12 May 2022 05:18:25
1653273231 1653273287     56	  0.004	# 23 May 2022 12:33:51 23 May 2022 12:34:47

Summary
Total 500 outages, total time 1168419 seconds (13 days, 12:33:39)
Longest outage:			192150 seconds (2 days, 05:22:30)
   Start:			21 February 2015 04:36:54
   End:				23 February 2015 09:59:24
Average time between outages:	522030 seconds (6 days, 01:00:30)
Average duration:		2336 seconds (00:38:56)
Availability:			99.55%
      

“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:

Timestamp      Outages  Duration  Availability    Date
                        (seconds)
1644757200	  1	   180	 99.79%	# 14 February 2022
1644843600	  1	     3	100.00%	# 15 February 2022
1645016400	  1	  1222	 98.59%	# 17 February 2022
1645189200	  1	   180	 99.79%	# 19 February 2022
1645534800	  1	   417	 99.52%	# 23 February 2022
1645621200	  1	    24	 99.97%	# 24 February 2022
1649772000	  3	  5138	 94.05%	# 13 April 2022
1650376800	  1	   326	 99.62%	# 20 April 2022
1652277600	  2	  2997	 96.53%	# 12 May 2022
1653228000	  1	    56	 99.90%	# 23 May 2022
      

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 1.8 2019/04/13 05:04:37 grog Exp $