What's the significance of the TBB protocol result?

Every now and again I get a speedtest result where the TBB download is far slower than the HTTP result for example I just got this.

I wonder what it means? Perhaps I should add that I'm on WiFi two floors below my router so pretty much at the edge of my reliable coverage.

Edited by longedge (Mon 05-Jan-15 20:25:36)

The tbb is a single download, the next is multiple downloads at the same time, which maxes out the line. Your connection is similar to mine, and for me it is ok

What made me wonder is the fact that normally both download results are within a gnats wotsit of each other. I don't normally see anything like the difference I got earlier.

Usually a sign of congestion or wireless issues

So the HTTP is 6 downloads at once.

Say you have 10Mbps connection.

If it's just you using the connection you will get 10Mbps on a download

Say 2 people use the connection. 2 of you are downloading, getting 5Mbps each

Now say 1 of you starts 9 downloads, the other carries on downloading just the 1 file.
You will get say 9Mbps, the other user will get 1Mbps. As you are downloading 9 files, them 1 file.

It's similar with the HTTP result, the TBB download will show up the same as the HTTP result if there is not congestion.

Having 6 downloads at once masks congestion better, like in the example where you are downloading 9 files and getting 9Mbps above.

So it indicates congestion or a poor setup usually.

Looks like it's demonstrating wireless-n multistreams to good effect to me.

I started running ethernet yesterday and got a twin outlet to my TV and Sky Box finished. The improvement was amazing. Hopefully a third outlet to my laptop very soon.

It's pretty clear that WiFi is my 'problem'.

p.s. - thanks for the insights.

Edited by longedge (Wed 07-Jan-15 08:20:23)