in the case of your slow upload results its likely BDP related. So limited by latency/sendbuffer.

Unlikelly ... two speedtest.net servers located in the same area and with similar latencies. One gives 56 down and 5 up whilst the other 62 down and 18/19 up. Neither of which is totally correct - based on sync speed I should get 56 down 19 up. Nothing changes here just the routing from Telecity/Telehouse

I agree with MHC that different speedtest.net servers give very different results.

I have found the thinkbroadband test most reliable for upload speeds; it is the only one recently that gives results that match the real speeds of good backup sites (eg SquirrelSave) at around 18Mbps (visualware test used to but went seriously bad some months ago).

For me, the thinkbroadband TBBx1 download test always gives really low results (9.3), and the HTTPx6 test usually gives slightly low results (but quite good ones this time, 66.3)

http://www.thinkbroadband.com/speedtest/results.html...

Edited by StephenTodd (Thu 02-Jan-14 16:58:16)

give me the 2 servers I will test as I have a large send buffer configured.

Also you may have failed to take into account the receive buffer on the speedtest server.

Edited by Chrysalis (Thu 02-Jan-14 17:43:39)

In reply to a post by StephenTodd:

I agree with MHC that different speedtest.net servers give very different results.

I have found the thinkbroadband test most reliable for upload speeds; it is the only one recently that gives results that match the real speeds of good backup sites (eg SquirrelSave) at around 18Mbps (visualware test used to but went seriously bad some months ago).

For me, the thinkbroadband TBBx1 download test always gives really low results (9.3), and the HTTPx6 test usually gives slightly low results (but quite good ones this time, 66.3)

http://www.thinkbroadband.com/speedtest/results.html...

same test with good buffer sizes?

http://www.thinkbroadband.com/speedtest/results.html...

Try Maidstone and Canterbury - 8 Mbps and 19 Mbps

And I have no control over te receive buffer and if a site is going to host a service then it should be correctly configured.

In reply to a post by Ignitionnet:

http://www.speedtest.bbmax.co.uk/

Is another Namesco speed test.

I just love the "Get Faster Broadband Here - Download speeds up to 8Mbps available!" that still appears on that one.

maidstone has a poor recv buffer maxing out at about 17.5mbps for me and canterbury 19mbps.

Plusnet congestion tho slowing down downstream on both.

Proves the point that not all speedtest.net servers are fully capable of working with 80/20 services or full rate FTTP.

In reply to a post by MHC:

Proves the point that not all speedtest.net servers are fully capable of working with 80/20 services or full rate FTTP.

A lot of them I think are overloaded. Matt from Uno certainly said theirs often had a LOT of load a year or so ago.