In reply to a post by Oliver341:

In reply to a post by bobble_bob:

Also suggests Business does get priority?

But according to richi, only in the rare circumstance of exchange congestion.

Not what I said. And I'm getting bored of going around and around this circle. TTB will always get priority, but you'll only see the effects of that prioritization if there's enough congestion.

My guess is that what look like ratios aren't. They're just numbers -- each of which are bigger or smaller than the other numbers. Such is the nature of priorities.

In reply to a post by richi:

In reply to a post by David_W:

It is unlikely that any provider would operate their network on the basis of "let all business traffic through before any residential traffic".

In fact, that's basically what BT Wholesale does. Each defined priority level is assigned its own queue. Traffic in lower-level queues doesn't get delayed unless there's congestion.

I am fully conversant with the idea of priority based scheduling. My point was that it is likely something more refined is in use than let all business traffic through before any residential traffic (emphases added), not least as such a crude algorithm would play havoc with jitter and TCP window scaling. I had algorithms like HFSC in mind.

In reply to a post by David_W:

My point was that it is likely something more refined is in use than let all business traffic through before any residential traffic.

My understanding is that this is what 20CN/IPStream does (I have it on good authority from a knowledgeable BT employee). Quite possibly 21CN as well -- dunno.

As I said, I don't know if TT's algorithm is more nuanced. However, judging by the OP's data, I'd say TT is using the same, simple algorithm, exactly as you emphasize. And, let's face it, at scale, simple is usually best (speaking as someone who has engineered systems that scale vertically and horizontally to millions of users).

Bl**dy hell, it looks like TTB/Openreach might have finally sorted my connection out (it only took them 85 days....). Not holding my breath, but it currently looking like this:

Ping Monitor

The last red line at around 3:00 PM was expected as I was moving back to my trusty Asus RT-N66U from the supplied HG635 Super Router

Fingers crossed....