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This is a sub-selection from DSL and Cable Latency


Picaso

join:2003-01-23
Beverly Hills, CA

1 edit
reply to Rokk

Re: DSL and Cable Latency

Distance to the CO has nothing to do with Latency. If the assumption here is that the time it takes DSL signal (electricity) to travel is going to be noticable between 5,000' and 12,000'..there are some serious misconceptions.

Latency is a measure of processing time over a device(router/DSLAM/Switch/Bridge/etc), simply how long it takes for a device to transfer incoming electrical/optical signals from one interface to another. A router is simply a specialized PC. What happens when a PC has to many things going on? It slows down...

Your issues revolves around your first Hop, the first hop is the accumulated delay between "YOU" and the next layer 3(IP)device. What does your latency look like when there is no activity from outside sources (Gamers)? The delay itself could simply stem from your PC's inability to process ethernet frames. Now I am not saying that is the issue, it however is often the most overlooked culprit.

"You can tell if interleaving is active on your line by measuring the first hop ping. If it is under 20ms, interleaving is disabled. If it is above 45ms, interleaving is enabled."

BS-- Interleaving is variable setting, depending on the amount of error correction needed. True most manufacturers have a default setting but it is defenantly configurable. So if your provider is using a low level of interleaving it may only add 1 or 2 ms at best and do very little to stabalize your line. Also 45ms to the first hop does not mean interleaving.. it means there is delay from some factor, interleaving is just one possibility.

Good luck...