What ever happened with this? "eXperimental bandwidth delay product code"

[John-Mark Gurney]

Max Clark wrote this message on Wed, Jul 09, 2003 at 13:27 -0700:
> :) hehe...
> 
> Okay, let's say how do I force my machine to think it doesn't have any
> latency and saturate a 6Mbit/s link even though the link has 220ms latency?

You might want to try:
net.inet.tcp.sendspace=$((128*1024))
net.inet.tcp.inflight_min=$((64*1024))
net.inet.tcp.inflight_enable=1

Try to increase inflight_min if necessary.  Of course this will effect
all sending data to this box, so it might have other negative effects.

> -----Original Message-----
> From: Dan Nelson [mailto:dnelson at allantgroup.com]
> Sent: Wednesday, July 09, 2003 1:21 PM
> To: Max Clark
> Cc: freebsd-hackers at freebsd.org
> Subject: Re: What ever happened with this? "eXperimental bandwidth delay
> product code"
> 
> 
> In the last episode (Jul 09), Max Clark said:
> > Assuming zero (0) network latency what should I configure on my
> > FreeBSD boxes to saturate a 6Mbit/s (750Kbyte/s) link?
> 
> Assuming zero latency, absolutely nothing :)  You can easily saturate a
> 100mbit LAN connection (which has like a 12K bw*d product) even with
> IDE disks.  Latency and packetloss are the killers.
> 
> --
> 	Dan Nelson
> 	dnelson at allantgroup.com
> 
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-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."