nanog mailing list archives
Re: PAIX
From: Vadim Antonov <avg () exigengroup com>
Date: Sat, 16 Nov 2002 15:03:18 -0800 (PST)
On Sat, 16 Nov 2002, Petri Helenius wrote:
In any case, TV (of all things) does not have problems with latency or jitter below 10s of seconds. All TV content is pre-packaged.Live events and interactive show's are not.
"Live" events are typically delayed by a minute or so to give time to editors to decide on course of action if something goes wrong with "live" feed. In any case, nobody cares about another half-minute of delay. The same pretty much goes for "interactive" shows - which all have interaction loops of minutes, not sub-second response which is hard to do over the regular Internet.
In some cases you start to suffer if your latency goes to multiple-seconds range. That's quite rare anyway, >500ms network latency is quite rare and add few hundred codec and de-jitter latency and you'll find that excessive jitter is your enemy, not the latency itself.
Excessive jitter is easily converted into latency by having bigger buffers at the receiving end. So far, the only mass applications which have real need to have low latency are telephony (including video kind) and on-line gaming. Those are relatively low-bandwidth, and so don't contribute much to long-haul traffic. Of course, hauling bits over long-distance circuits costs more than doing the same over local exchanges - but the current routing technology makes having hundreds of local exchanges somewhat infeasible. --vadim
Current thread:
- Re: PAIX Jere Retzer (Nov 15)
- Re: PAIX David Diaz (Nov 15)
- Re: PAIX Stephen Stuart (Nov 15)
- Re: PAIX Petri Helenius (Nov 17)
- Re: PAIX Vadim Antonov (Nov 16)
- Re: PAIX Petri Helenius (Nov 16)
- Re: PAIX Vadim Antonov (Nov 16)
- Re: PAIX Paul Vixie (Nov 16)
- Simulated disaster exercise? Re: PAIX Sean Donelan (Nov 16)
- Re: Simulated disaster exercise? Re: PAIX Stephen J. Wilcox (Nov 16)
- Re: Simulated disaster exercise? Re: PAIX Richard A Steenbergen (Nov 16)
- Re: Simulated disaster exercise? Re: PAIX Sean Donelan (Nov 16)
- Re: Simulated disaster exercise? Re: PAIX Richard A Steenbergen (Nov 16)
- Re: Simulated disaster exercise? Re: PAIX Steve Feldman (Nov 17)
- Re: PAIX Petri Helenius (Nov 16)
- Re: Simulated disaster exercise? Re: PAIX Sean Donelan (Nov 17)
- Re: Simulated disaster exercise? Re: PAIX Jesper Skriver (Nov 17)
- Re: Simulated disaster exercise? Re: PAIX Kurt Erik Lindqvist (Nov 18)