On Fri, Nov 17, 2023 at 8:57 PM Russell Senior <[email protected]> wrote:
> > > On Fri, Nov 17, 2023 at 7:02 PM Keith Lofstrom <[email protected]> wrote: > >> > On Fri, Nov 17, 2023 at 08:26:21AM -0800, Rich Shepard wrote: >> > > I need to download ~15G of data from a web site. Using a PLUG mail >> list >> >> Apropos of not much, when I first got on this crazy >> [...] I will "soon" install 100/100 Mbps Ziply fiber for >> $20/month. I could upgrade to 2000/2000 Mbps (I don't >> need that much, I don't stream movies) for $70/month. >> >> That's one minute to move 15 gigabytes. >> > > Two observations: > > a) the bandwidth your plan claims does not factor in the speed at which > the rest of the internet will deliver bits to you (even assuming the ISP > isn't exaggerating), my experience has been that it is *rare* (not > impossible) for actual real world services on the internet to actually feed > you at significant fractions of gigabit speeds (often around 30Mbps) even > on my supposedly gigabit fiber service. About 5% of the time I'm surprised > by something faster. Speed test sites are the exception. I suspect > shenanigans between the ISPs and the speed test sites. > Here are some examples. They are from my gateway device (nothing but telco infrastructure upstream, no NATing, routing or storage involved, writing directly to /dev/null): root@gw:/tmp# curl https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.6.1.tar.xz > /dev/null % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 133M 100 133M 0 0 14.6M 0 0:00:09 0:00:09 --:--:-- 14.9M root@gw:/tmp# curl https://releases.ubuntu.com/22.04.3/ubuntu-22.04.3-desktop-amd64.iso > /dev/null % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 4804M 100 4804M 0 0 12.4M 0 0:06:25 0:06:25 --:--:-- 8021k Not too horrible, the numbers are in bytes, so apply a factor of 10 to accommodate framing overhead and bits per bytes, averaging around 150Mbps This is more typical of what the internet feeds you: root@gw:/tmp# curl -k https://download.freebsd.org/releases/amd64/amd64/ISO-IMAGES/13.2/FreeBSD-13.2-RELEASE-amd64-dvd1.iso > /dev/null % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 16 4048M 16 680M 0 0 1144k 0 1:00:23 0:10:09 0:50:14 1597k Closer to 10Mbps. (ps, i didn't want to wait an hour, so I interrupted it after only 10 minutes) Meanwhile, a random speedtest.net from a wired internal client through the same gateway (so, routing and NATing are involved) shows ~600Mbps down and 400Mbps up.
