50M : Think Broadband Ping Monitor Results (POST YOURS)

[Kushan]

Yeah, but that's load balancing of the network, not of the down streams the guy has. There may be an over-utilisation of the upstream he's on, but even if he was only on one downstream it wouldn't be any better is what I'm saying.

[Qtx]

Originally Posted by Horace

Anyone with a clue know why my connection falls apart between 4pm and Midnight exactly every day, I mean, utilisation problems shouldn't be so well scheduled and there's nothing running on my end to swamp my connection during those times by the way.

It is obviously related to peak time usage. Pretty sure that more users active can increase some type of errors. Not sure if that would be HEC/FEC or something else, or indicative of an amp on its way out or whatever though.

The packet loss makes me think its not as simple as utilisation.

[qasdfdsaq]

Originally Posted by Kushan

I don't think the number of downstreams versus the number of upstreams has any impact.

Given each downstream channel requires a certain amount of upstream bandwidth to work, it does.

Considering one downstream channel uses up to 5-10% of the upstream channel capacity to run, fully utilizing 8 downstream channels with one upstream could result in up to 80% of the upstream capacity being utilized just to operate the downstream, while nobody is uploading anything. That leaves very little upstream capacity left over for actual uploading, especially given congestion issues can begin at above 70% upstream utilization

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Originally Posted by Kushan

Yeah, but that's load balancing of the network, not of the down streams the guy has. There may be an over-utilisation of the upstream he's on, but even if he was only on one downstream it wouldn't be any better is what I'm saying.

However if the network only had one downstream (aside from downstream congestion issues) that would leave at least 90% of the upstream capacity available, compared to the ~40-50% left over with 8 downstream channels in use.

[Sephiroth]

Originally Posted by qasdfdsaq

Given each downstream channel requires a certain amount of upstream bandwidth to work, it does.

Considering one downstream channel uses up to 5-10% of the upstream channel capacity to run, fully utilizing 8 downstream channels with one upstream could result in up to 80% of the upstream capacity being utilized just to operate the downstream, while nobody is uploading anything. That leaves very little upstream capacity left over for actual uploading, especially given congestion issues can begin at above 70% upstream utilization.

There's an interesting article on the subject here.

The takeaway in the context of Qasi's post is that the frequency of ACKs sent back (through a busy) upstream on data received will slow the download (decrease throughput).

Whether or not that is a 5-10% overhead I'll leave to Qasi to justify, if he cares to. But it is an important point that he makes.

[Kushan]

Originally Posted by qasdfdsaq

Given each downstream channel requires a certain amount of upstream bandwidth to work, it does.

Considering one downstream channel uses up to 5-10% of the upstream channel capacity to run, fully utilizing 8 downstream channels with one upstream could result in up to 80% of the upstream capacity being utilized just to operate the downstream, while nobody is uploading anything. That leaves very little upstream capacity left over for actual uploading, especially given congestion issues can begin at above 70% upstream utilization

---------- Post added at 03:12 ---------- Previous post was at 03:10 ----------


However if the network only had one downstream (aside from downstream congestion issues) that would leave at least 90% of the upstream capacity available, compared to the ~40-50% left over with 8 downstream channels in use.

Believe it or not, this situation is nothing new to VM. Remember when the 50Meg first came out and had an upload speed of barely over 1.5Mbit? (If I recall correctly). The ACKs alone would nearly congest the upload stream in itself, yet it actually ran fairly smoothly (For most, there's always an exception). Anyway, there is a point in what you're saying but he's having this issue without actually utilising his downstream, which is the point I'm making - just HAVING 8 downstreams versus 1 upstream isn't the issue, there's obviously something else going on there.

I'd like to know where you're getting your figures, though, 5-10% of upstream per downstream for example. Are you referring to the available bandwidth for the connection (What profile the modem is set to), or the available bandwidth for the channels (8x50Mbit on the downstream, 1x~30Mbit on the upstream?) or what?

[Chrysalis]

Originally Posted by qasdfdsaq

8 downstreams with only 1 upstream? Yeah that's begging for problems...

I now have 8 downstream but I dont know how many upstream, superhub is crashing 1 min after boot. I cant load the upstream page.

[joglynne]

Originally Posted by Chrysalis

I now have 8 downstream but I dont know how many upstream, superhub is crashing 1 min after boot. I cant load the upstream page.

Probably a silly suggestion but could you go directly to your upstream page

http://192.168.100.1/VmRouterStatus_upstream.asp

Sorry if it's a daft idea. (I'll get my coat on the way off the thread. )

[Chrysalis]

its fixed now, the issue was it couldnt get a wan ip and I guess whilst in that state in modem mode it isnt responsive. I will post a graph after some uptime.

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[Kushan]

Seems like a massive improvement on before.

[Chrysalis]

so far yeah, lets see how it goes at 6pm.

and yeah doh its already gone 6pm, 2US

[babis3g]

something is going on right now
Maybe is local


http://www.thinkbroadband.com/ping/s...3-01-2013.html

[Chrysalis]

2 days after waiting a year or so for the upgrade seems another is needed.



VM just cant get that modem count down enough.

[morley04]

Where in LE3 are you as I notice you're graph says " Bonded US "

[Chrysalis]

fosse road area.

[babis3g]

Originally Posted by Chrysalis

2 days after waiting a year or so for the upgrade seems another is needed.

same here after few days gone back up, then after 1-3 weeks gone down again
seems they will load balance it (or whatever they doing) by time