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Date:      Tue, 28 Jul 2009 07:44:34 +0100
From:      Mark Sandford <j.m.sandford@hotmail.co.uk>
To:        <julian@elischer.org>
Cc:        freebsd-ipfw@freebsd.org
Subject:   RE: Using dummynet to restrict bandwidth with more than 2 active pipes / queues
Message-ID:  <COL110-W1541DD4CA42B8DC23C22D392150@phx.gbl>
In-Reply-To: <4A6E990E.6090800@elischer.org>
References:  <COL110-W10D341161C0B631FE5239892140@phx.gbl> <COL110-W1117070BA101EAA0AD722492150@phx.gbl>  <4A6E990E.6090800@elischer.org>

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It's a home grown tool using libnet.

We've re-tested using one packet generation process to create 4 flows going=
 across the four pipes and see pretty much what we were expecting.

In this case we were just firing 1000 byte udp packets (1042 bytes on the w=
ire).

~~~~~~~~~~~~~~~~~~~~~~~~
Mark Sandford

email: j.m.sandford@hotmail.co.uk
mob: 07990 565976

~~~~~~~~~~~~~~~~~~~~~~~~






> Date: Mon=2C 27 Jul 2009 23:22:06 -0700
> From: julian@elischer.org
> To: j.m.sandford@hotmail.co.uk
> CC: freebsd-ipfw@freebsd.org
> Subject: Re: Using dummynet to restrict bandwidth with more than 2 active=
 pipes / queues
>=20
> Mark Sandford wrote:
> > Sorry if anyone's wasted time looking at this. The problem appears
> > to be with the traffic generator. Once we get above two generation
> > processes we think that the data is being sent in bursts so although
> > it appears to be right averaged over a second at a finer granularity
> > the burstiness is meaning it's either exceeding the bandwidth or idle
> > at each point.
> >=20
>=20
> what are you using to generate traffic?
> and what kind of traffic?
>=20
> _______________________________________________
> freebsd-ipfw@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-ipfw
> To unsubscribe=2C send any mail to "freebsd-ipfw-unsubscribe@freebsd.org"

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