Re: cannot fill 100Mbps pipe (over 20ms rtt via netem)?

From: Bill Fink
Date: Thu May 01 2008 - 02:24:31 EST


On Wed, 30 Apr 2008, slashdev wrote:

> On Wed, Apr 30, 2008 at 5:55 PM, John Heffner <johnwheffner@xxxxxxxxx> wrote:
> >
> > On Wed, Apr 30, 2008 at 5:43 PM, slashdev <slashdev@xxxxxxxxx> wrote:
>
> [snip]
>
> > > btw (maybe a stupid question): how did you deduce the cwnd from
> > > the traces? i can see large windows 300K+ being advertised by the
> > > receiver and the sender transmitting 100K+ of data many a times...
> > > (or is that because of TSO, is see those large values in tcpdump) ?
> >
> > http://www.tcptrace.org/
> > The cwnd is sometimes over 100KB, but often less.
>
> thanks!

Also thanks!

-Bill
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