From: Stephen Hemminger <shemminger@osdl.org>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Delay packets by 50ms
Date: Fri, 08 Oct 2004 22:54:46 +0000 [thread overview]
Message-ID: <1097276086.16787.115.camel@localhost.localdomain> (raw)
In-Reply-To: <2529DFFB52A7F7468172F354A6D3F53E378CC0@cabfranc>
On Fri, 2004-10-08 at 15:38 -0700, Anshuman Kanwar wrote:
> Hi all,
>
> I am trying to solve a tiny problem that is trivial to
> solve using dummynet (FreeBSD).
>
> I just want to add a delay of 50ms to each outgoing
> packet from an interface. This is to simulate a large
> pool of multiple modem users so I also need to add b/w
> limits etc (which seems to be easy to do).
>
> >From the mailing list I could fine 2 qdiscs that can
> simulate latency : "delay" & "netem". Neither of them is
> working on my setup though ( Fedora core2 [2.6.5] or RHEL
> 3.0 update 2 or gentoo [2.6.8] ). Is something special
> needed to enable these qdiscs ?
delay was my earlier name, netem is the current one.
Netem went in to mainline kernel 2.6.8 (also 2.4.27)
> I tried applying the patch
> (http://www.uwsg.iu.edu/hypermail/linux/net/0403.2/0019.h
> tml) and recompiled the kernel but the tc command returns
> "RTNETLINK answers: Invalid argument".
You probably need to build/run newer version of tc
see http://developer.osdl.org/dev/iproute2
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next prev parent reply other threads:[~2004-10-08 22:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-08 22:38 [LARTC] Delay packets by 50ms Anshuman Kanwar
2004-10-08 22:54 ` Stephen Hemminger [this message]
2004-10-09 3:40 ` Anshuman Kanwar
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