[757labs] Now: Fios fail Was: BFYI - 2nd Mid-Town Tunnel Support

Nathan McGuirt nathan at meltphace.org
Fri Dec 9 12:06:55 EST 2011


> 
> I'd argue just the opposite - latency today is more important than ever. A common web site like CNN.com (http://CNN.com) will have dozens or hundreds of separate HTTP round trips (173 at my last check of cnn.com (http://cnn.com) itself), coupled with possibly dozens of DNS resolutions (23 separate domains for cnn.com (http://cnn.com) at last check), etc. If you're over 100-130ms of latency per request, it might feel like it's crawling, even if you're on a gigabit connection. At 100ms rtt to your DNS server, that's almost half a second just for name resolution, without even beginning to do data transfer.
> 
> With Skype and other audio/video conferencing stuff taking off in a huge way, latency continues to be the killer.
> 
> Latency is why surfing on 3G still feels painful and slow, even though it's a multi-megabit connection.
> 
> http://www.edgeblog.net/2007/its-still-the-latency-stupid/

A wise man once told me "your DNS server needs to be the fastest thing on your network. If it's slow, everybody notices". 




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