Hello,

No results don't seem to vary on time of day. I've been trying it on off during the day and the evening.

You're looking at the wrong area, tommy

DLM has intervened downstream, but the sync speed remains at 80 Mbps because the line has a lot of spare capacity. The Max attainable is 98Mbps (although that is likely to be an overestimate), and the downstream SNR is still above 6dB.

DLM's intervention has turned on FEC and interleaving, and we can see it is working - there are only 14 CRC errors over the 30 hours of uptime, resulting in only 2 errored seconds. That's almost zilch ... and if kept up will see DLM de-intervening.

Whatever the cause of the horribly low speed, it isn't down to the modem connection to the cabinet.

Edit: a slight change to that analysis... The FEC count actually looks pretty high. If DLM de-intervened, that could end up being an ES count as high as 10,000 - which would cause DLM to re-intervene.

That doesn't change the fact that the FEC process is currently working, so the line throughput will be fine.

Edited by deleted (Mon 02-Feb-15 00:31:44)

Well there are several fields in your modems stats that say you are interleaved , imo the modems is miss reporting the stats or the IP profile hasn't updated if you log in to you router and disonnect to PPPOE session (not the modem) leave this off for say 30mins and reconnect and re test the bt performance tester and see if the ip profile has dropped or not, as sometimes they can get stuck
dropping the pppoe session will not have any effect on DLM, also another note should you ever need to power off your modem, leave powered off for 45min to 1 hr, so BT's DLM doesnt see it as a fault and apply more interleaving or banded profile

Well you learn something new every day, i assumed that dlm worked from the sync rate not the attainable, as mine has spare attainable and snr but it still clobbered me down to around 73mbps

Edited by tommy45 (Mon 02-Feb-15 00:16:56)

In reply to a post by WWWombat:

You're looking at the wrong area, tommy

DLM has intervened downstream, but the sync speed remains at 80 Mbps because the line has a lot of spare capacity. The Max attainable is 98Mbps (although that is likely to be an overestimate), and the downstream SNR is still above 6dB.

DLM's intervention has turned on FEC and interleaving, and we can see it is working - there are only 14 CRC errors over the 30 hours of uptime, resulting in only 2 errored seconds. That's almost zilch ... and if kept up will see DLM de-intervening.

Whatever the cause of the horribly low speed, it isn't down to the modem connection to the cabinet.

Hello,

Any ideas? Are you thinking it's something internal (home network).

-Sam

Well once to get down to device/hardware level it could be anything as i cannot see your hardware i don't know what software you have installed on it things like firewalls and security av suites , then if you cpu is near full load that could have a bearing on what speeds it's capable of , I don't use a laptop , but i once did some testing on one, and that was able to download at more or less full speed, although it did have problems sustaining it , wired of course

I know this is probably a silly question, but have you tried unplugging your son's network cable from his PC and then plug it in you laptop? i.e. you laptop is in the same room as your son's pc etc.

What speed on the speed test do you get there?

Paul.

Hi Sam,

It does look to be something internal on your network or individual machines...

I think you're son's laptop has pretty much prove that for you. As Tommy says, it could even be security software on the machines that is throttling the connection due to checking packets for nastiness?

Any iPads around that you could install one of the speedtest apps on, just for a comparison (although wireless connection speed would have to be decent)?

Phil

Edited by phil_w73 (Mon 02-Feb-15 00:34:18)