Date: Fri, 28 Apr 2000 18:46:53 -0600 (CST) From: Ryan Thompson <ryan@sasknow.com> To: spork <spork@super-g.com> Cc: freebsd-chat@freebsd.org Subject: Re: Max. T1 throughput? Message-ID: <Pine.BSF.4.21.0004281828060.67471-100000@ren.sasknow.com> In-Reply-To: <Pine.BSF.4.00.10004281808581.25043-100000@super-g.inch.com>
next in thread | previous in thread | raw e-mail | index | archive | help
spork wrote to Ryan Thompson: > You may also wish to test to an ftp/http server that is located at your > ISP's POP, just to see if the bottleneck is your connection or their > connection out to the 'net. That's one of the first things I tried. Though latency was a bit lower (not much, mind you), throughput was about the same... Which led me to believe the bottleneck was indeed between my router and theirs. We are located 1,000 or maybe 2,000 meters from our ISP, so we are well within the range for fast SDSL. > In all fairness, there are a number of locations that I cannot get > more than 90KB/s out of no matter whose backbone I'm sitting on. Yup.. That's to be assumed. Host-to-host transfers are never a reliable indicator of available throughput, which is why I connected to about a dozen hosts on half a dozen networks (near and far) and tried about three dozen large (10MB+) transfers in parallel... I run MRTG, but don't always trust it for accurate measure... So I just sent all the downloads to a directory and, once the transfers started, did: # du -s && sleep 60 && du -s .. Then take the difference in K and divide by 60 to get K per second download. Done at times of low network and system load, I've found tests like this to provide a good indication of total saturated *protocol level* throughput. It is assumed that the actual line throughput is some small amount higher, due to the protocol overhead involved. Most people are ultimately interested in "how fast I can FTP files" anyway, so relatively qualitative tests like the one I've described are useful. > Oddly enough, I remember in the 'early days' of the internet it was much > faster... :) Sure, sure... I think somebody is getting nostalgic :-) > > Charles > > --- > Charles Sprickman > spork@super-g.com > --- -- Ryan Thompson <ryan@sasknow.com> Systems Administrator, Accounts Phone: +1 (306) 664-1161 SaskNow Technologies http://www.sasknow.com #106-380 3120 8th St E Saskatoon, SK S7H 0W2 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.21.0004281828060.67471-100000>