NNSquad - Network Neutrality Squad
[ NNSquad ] Re: Blocking Comcast's Sandvine with simple firewall rules?
On Wed, Jul 2, 2008 at 2:10 PM, Nick Weaver <nweaver@gmail.com> wrote: > One correction... > > On Wed, Jul 2, 2008 at 1:49 PM, Nick Weaver <nweaver@gmail.com> wrote: > >> Likewise, I can tell you that my ISP does a "shape early" policy, >> where the start of large uploads receive more bandwidth (it starts off >> at 140 KB/s, quickly reducing to ~40 KB/s after about 1 MB.) >> regardless of congestion. > > This is assuming you trust SSH's performance figures. It could be bad > tool, and is just overestimating early transfer rates. I haven't done > a low level packet count verification/graph yet. > As a final corection, I went and did a packet measurement. The packet counts don't significantly change, so QED, I was mistaken in trusting SSH's performance figures. Lesson being: Unless you build the tool or deeply understand how it does a measurement, you can't trust it, and trusting it was a mistake.