Pinch felt at Vodafone on first of September - UPDATED
The graph shows speeds dropping to same sort of average levels as the previous problem day, we've plotted the peak time 7pm to 10pm speeds this time with the full 24 hour average for the last 7 days in the table.
|7pm to 10pm||Median download||Mean Download||Median Upload||Mean Upload|
|Monday 26th August||16.4 Mbps||22 Mbps||4.1 Mbps||5.6 Mbps|
|Tuesday 27th August||31.3 Mbps||34.9 Mbps||6.8 Mbps||8.8 Mbps|
|Wednesday 28th August||30.9 Mbps||32.5 Mbps||6.7 Mbps||8.2 Mbps|
|Thursday 29th August||31.5 Mbps||36.4 Mbps||6.6 Mbps||9.2 Mbps|
|Friday 30th August||31.0 Mbps||37.1 Mbps||5.9 Mbps||8.8 Mbps|
|Saturday 31st August||29.7 Mbps||32.5 Mbps||6.8 Mbps||8.1 Mbps|
|Sunday 1st September||13.1 Mbps||24.1 Mbps||3.4 Mbps||6.0 Mbps|
Social media also had people complaining and the issues affected both VDSL2 and Gigafast customers confirming that it is not the Openreach VDSL2 network behaving oddly.
Given that this problem happened again on a weekend suggests that parts of their core network may be running close to the limit and thus when busy see contention kicking in aggressively. In the table we have included the upload averages which are also impacted.
Update 6pm 2nd September: The median and mean download speeds until 5:15pm are 32 Mbps and 34.3 Mbps respectively. Also looking at the distribution of locations for people testing their speeds the North West had a high concentration for tests carried out so far in September, suggesting the issue may be regional. The poor speed test results look to start once you reach Nottingham, the North East and Glasgow looked relatively OK but Edinburgh does have a cluster of poor speeds.
We will keep an eye on the speeds as the peak time window commences. ISPreview managed to get a vague update on the possible cause with planned maintenance on a damaged fibre stated as the cause. If this really was planned maintenance then Vodafone need to update status pages to warn customers and picking a Sunday evening is not the best time to network maintenance as its one of the peak times for people to sit down and watch some streamed content or more boring things like finish homework.