Date: Wed, 02 May 2007 17:05:23 -0700 From: Julian Elischer <julian@elischer.org> To: youshi10@u.washington.edu Cc: freebsd-net@freebsd.org, Marko Zec <zec@icir.org> Subject: Re: Unix friendly network testbench for FreeBSD? Message-ID: <46392743.1070200@elischer.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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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.
> Anything possible to help speed up my work and our regressions at
> my work is more than appreciated.
> -Garrett
When you look at the scope of the changes you'll realise what you are asking..
I'd go with 4.11 or wait the extra month or so..
>
>>> 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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