Re: network delay simulation

[Andrew Morton <akpm@xxxxxxxx>]

"David S. Miller" <davem@xxxxxxxxxx> wrote:
>
> On Wed, 17 Mar 2004 00:00:48 +0100
> Andi Kleen <ak@xxxxxxx> wrote:
> 
> > iirc there was a 2.4 port of NistNet. Porting it to 2.6 is probably
> > not that much work.
> 
> nistnet works, but even akpm remembers it as pretty grotty, who knows
> maybe the most recent 2.4.x variant was much better, but I doubt it.

whaddya mean "even"?

I wrote a userspace thingy many moons ago which provides variable delays
and bandwidth restriction.  It's for simulating long, thin pipes.  It uses
the tap/tun interface to route packets up to userspace where the
delay/throttling is implemented.  It requires weird policy routing rules,
but there are scripts there which set everything up.

http://www.zipworld.com.au/~akpm/linux/patches/stuff/packet-delay.tar.gz