Date: Thu, 3 May 2007 20:35:33 +0200 From: Marko Zec <zec@icir.org> To: freebsd-net@freebsd.org Cc: youshi10@u.washington.edu Subject: Re: Unix friendly network testbench for FreeBSD? Message-ID: <200705032035.33513.zec@icir.org> In-Reply-To: <Pine.LNX.4.43.0705021653190.21013@hymn01.u.washington.edu> References: <Pine.LNX.4.43.0705021653190.21013@hymn01.u.washington.edu>
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On Thursday 03 May 2007 01:53:19 youshi10@u.washington.edu wrote:
> On Thu, 3 May 2007, Marko Zec wrote:
> > On Wednesday 02 May 2007 23:40:35 youshi10@u.washington.edu wrote:
> >> On Wed, 2 May 2007, Chuck Swiger wrote:
> >>> youshi10@u.washington.edu wrote:
> >>>> Hi,
> >>>> I'm looking for a network testbench / simulator to
> >>>> stimulate known networking conditions to test out a component
> >>>> for a product at work. I was wondering if there was a network
> >>>> simulator available (preferably open source) that's FreeBSD /
> >>>> Linux compatible which I can simulate as real of a network as
> >>>> possible on a virtual machine / network.
> >>>
> >>> Dummynet or ALTQ might be good starting points, as is netgraph,
> >>> depending on just what you're trying to do. There are also
> >>> userland benchmark/analysis tools like flood pinging, netperf, &
> >>> ab ("apache bench").
> >>>
> >>> --
> >>> -Chuck
> >>
> >> Hmmm... ok, expanding on that what I was looking for was a means
> >> to simulate semi-realtime delays across a virtual network with 4+
> >> virtual machines. Is it possible to use Dummynet in this case, or
> >> do I need to look into something else?
> >
> > You can use IMUNES for emulating arbitrarily complex network
> > topologies with hundreds of nodes, with each virtual node beheaving
> > like an independent FreeBSD box, if that's what you are after.
> > www.imunes.net -> it's still based on an aging but rock solid 4.11
> > kernel, with a version that will run on 7.0-CURRENT expected to
> > become available in the next month or so.
> >
> > Marko
>
> Marko,
> What roadblocks are you coming across porting IMUNES to a
> possibly earlier version (5.5, 6.2) of FreeBSD than 7 though? Maybe I
> can try and help, depending on the required tasks.
The chances for any backporting of the virtualization framework to 6.x
or even 5.x are quite slim. As Julian mentioned, if stability and
performance arw your priorities, try the old version (based on 4.11).
Otherwise, grab the -CURRENT sources from imunes.tel.fer.hr/virtnet and
help us hunt out the bugs...
Cheers,
Marko
> Anything possible
> to help speed up my work and our regressions at my work is more than
> appreciated. -Garrett
>
> >> Other conditions I planned on imposing are non-locking NFS (causes
> >> a lot of issues here with files at work), and have SUSE 32-bit
> >> clients (host OS of choice at work) if possible connect to the
> >> host machine and with one another, executing make jobs.
> >>
> >> Any further suggestions on how to do this?
> >>
> >> Thanks,
> >> -Garrett
>
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