NYCPHP Meetup

[Brian Pang]

set a timestamp variable with javascript

send (in comments if you don't want it to show) 100K of text data

set a second timestamp variable using javascript

determine elapsed time between the two timestamps...

(seconds/100)*1.024 = Kbps

I recommend using a large chunk of data because something small, like
1k, has the potential to burst through at a significantly higher rate
than you would anticipate.

I usually run two tests and then get the mean of both results.
http://www.bpang.com/speed/

bear in mind that the advertised speeds of modems, etc, is in k, not K


> 
> 
> Jay wrote:
> 
> > Anyone here have any experience with bandwidth testing? Basically, I'm
> > looking to determine a website visitor's connection speed so I can
direct
> > them to an appropriate media stream.
> 
> I've done bandwidth testing, but not between a user's browser and the
server - typically it's between two servers :)
> 
> I'm not sure if there is a good way of doing this, though; if there
was, the major sites like cnn.com and so forth wouldn't ask you to
select the stream's speed.  Maybe there's a way to talk directly to a
particular plugin and ask it what kind of internet connection it's owner
configured it for, but it's probably not a good idea to saturate the
client's internet link.  I suppose you could traceroute them and
possibly determine from that what kind of link they're on, but I would
think that's very unreliable and complex.
> 
> H
> 
> _______________________________________________
> talk mailing list
> talk at lists.nyphp.org
> http://lists.nyphp.org/mailman/listinfo/talk
> 
>