The only informal paper I remember is Stuart Cheshire’s It’s the latency, stupid… http://www.stuartcheshire.org/rants/Latency.html <http://www.stuartcheshire.org/rants/Latency.html>
Given it’s from the dialup days, but latency is still the same just a lot lower. I would thing I would recommend now is checking out SRE docs as well for application latency it's not network related, but does affect performance. https://landing.google.com/sre/sre-book/toc/ <https://landing.google.com/sre/sre-book/toc/> Sincerely, Eric Tykwinski TrueNet, Inc. P: 610-429-8300 > On Apr 8, 2020, at 6:36 PM, Jakob Heitz (jheitz) via NANOG <[email protected]> > wrote: > > My data point: > > I'm working from home. My computer is connected through company VPN, over > wifi to Comcast. > Comcast speed test says 18mS. > I use VNC and Webex with voice and video through the computer. > VNC response time and voice delay is not noticeable. > > Regards, > Jakob. > > -----Original Message----- > Date: Tue, 7 Apr 2020 22:52:18 +0000 > From: Adam Thompson <[email protected]> > > I’m looking for a practical guide – i.e. specifically NOT an academic paper, > thanks anyway – to predicting the effect of increased (or decreased) latency > on my user’s applications. > > Specifically, I want to estimate how much improvement there will be in > {bandwidth, application XYZ responsiveness, protocol ABC goodput, whatever} > if I decrease the RTT between the user and the server by 10msec, or by > 20msec, or by 40msec. > > My googling has come up with lots of research articles discussing theoretical > frameworks for figuring this out, but nothing concrete in terms of a > calculator or even a rule-of-thumb. > > Ultimately, this goes into MY calculator – we have the usual north-american > duopoly on last-mile consumer internet here; I’m connected directly to only > one of the two. There’s a cost $X to improve connectivity so I’m peered with > both, how do I tell if it will be worthwhile? > > Anyone got anything at all that might help me? > > Thanks in advance, > -Adam > > Adam Thompson > Consultant, Infrastructure Services > [[MERLIN LOGO]]<https://www.merlin.mb.ca/> > 100 - 135 Innovation Drive > Winnipeg, MB, R3T 6A8 > (204) 977-6824 or 1-800-430-6404 (MB only) > [email protected]<mailto:[email protected]> > www.merlin.mb.ca<http://www.merlin.mb.ca/> >
