DSL performance history

This article documents measured download speed of my DSL service over some years. The reports are created automatically and this article updated daily.

Telstra

Up to 05/10/2016, the service was an 8Mb/s ADSL service from Telstra Bigpond.

At most times that I want to use it, the speed is less than 10% of the capped speed (8Mb/s), and that there is no consumer protection of service levels stands as testament to the failure of successive governments that put their role as operators of a carriage network (again) ahead of consumers.

The performance problem here is not copper based, but in the fibre backhaul.

Though these measurements are of a single ADSL service, one expects that this performance is widespread, in this case (Jan 2015) the DSLAM accommodates up to 128 subscribers on a STM-1 (155Mb/s) backhaul and we might expect it has more than 100 subscribers, and these DSLAMs exist all over the network and whilst the NBN is seen as the solution, it is actually the underlying cause.

It does appear that some form of backhaul upgrade occurred after a short period of unannounced network unavailability around 03:00 on 24/05/2015.

IINET

From 05/10/2016, the service is a 12Mb/s NBN hosted FTTN/VDSL2 service from IINET. The copper length would be about 980m modem to modem, which NBN rate at 70Mb/s though most other sources suggest more like 40Mb/s and the modem reports 40.6Mb/s.

Yesterday

You may need to use the refresh button on your browser to update the graphs for yesterday. A datum line is shown for the current contracted access speed.

Download speed by hour yesterday

Above, download speed yesterday.

Some speed tests may indicate higher values, but they are proprietary in nature and not representative of real network traffic leading typically to inflated speeds under light traffic conditions. The test reported here uses wget to download a 'nearby' plain English text file using HTTP.

Frequency distribution yesterday

Above, frequency histogram and cumulative probability of download speed yesterday.

Yesterday's median speed: Mb/s, % of Mb/s.

Last week - week ending: .

Download speed by hour over the week

Above, download speed over the week.

Frequency distribution over the week

Above, frequency histogram and cumulative probability of download speed over the week.

Percentile history

Above, percentile download speed history.

Archive

Below is an archive of graphs of speed and frequency distribution.

      Name                    Size  Description
yesterday-graph02.png 9.4K yesterday-graph01.png 7.3K quarter-graph02.png 9.7K quarter-graph01.png 15K p.png 9.6K month-graph02.png 9.9K month-graph01.png 12K median.png 7.3K half-graph02.png 9.4K half-graph01.png 15K 2016-12-03-graph02.png 9.8K 2016-12-03-graph01.png 9.4K 2016-11-26-graph02.png 9.8K 2016-11-26-graph01.png 9.3K 2016-11-19-graph02.png 9.9K 2016-11-19-graph01.png 9.2K 2016-11-12-graph02.png 9.8K 2016-11-12-graph01.png 9.3K 2016-11-05-graph02.png 9.8K 2016-11-05-graph01.png 9.3K 2016-10-29-graph02.png 9.9K 2016-10-29-graph01.png 8.8K 2016-10-22-graph02.png 9.7K 2016-10-22-graph01.png 8.8K 2016-10-15-graph02.png 9.8K 2016-10-15-graph01.png 8.7K 2016-10-08-graph02.png 9.5K 2016-10-08-graph01.png 8.4K 2016-10-01-graph02.png 9.1K 2016-10-01-graph01.png 8.2K 2016-09-24-graph02.png 9.0K 2016-09-24-graph01.png 8.2K 2016-09-17-graph02.png 9.1K 2016-09-17-graph01.png 8.3K 2016-09-10-graph02.png 9.3K 2016-09-10-graph01.png 8.5K 2016-09-03-graph02.png 9.5K 2016-09-03-graph01.png 8.6K 2016-08-27-graph02.png 9.3K 2016-08-27-graph01.png 8.5K 2016-08-20-graph02.png 9.5K 2016-08-20-graph01.png 8.5K 2016-08-13-graph02.png 9.6K 2016-08-13-graph01.png 8.6K 2016-08-06-graph02.png 9.6K 2016-08-06-graph01.png 8.4K 2016-07-30-graph02.png 9.6K 2016-07-30-graph01.png 8.5K 2016-07-23-graph02.png 9.5K 2016-07-23-graph01.png 8.5K 2016-07-16-graph02.png 9.4K 2016-07-16-graph01.png 8.5K 2016-07-09-graph02.png 9.6K 2016-07-09-graph01.png 8.5K 2016-07-02-graph02.png 9.6K 2016-07-02-graph01.png 8.4K 2016-06-25-graph02.png 9.6K 2016-06-25-graph01.png 8.4K 2016-06-18-graph02.png 9.5K 2016-06-18-graph01.png 8.4K 2016-06-11-graph02.png 9.5K 2016-06-11-graph01.png 8.4K 2016-06-04-graph02.png 9.5K 2016-06-04-graph01.png 8.6K 2016-05-28-graph02.png 9.6K 2016-05-28-graph01.png 8.7K 2016-05-21-graph02.png 9.6K 2016-05-21-graph01.png 8.7K 2016-05-14-graph02.png 9.5K 2016-05-14-graph01.png 8.5K 2016-05-07-graph02.png 9.4K 2016-05-07-graph01.png 8.6K 2016-04-30-graph02.png 9.4K 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A long and sad story with years to run yet...