[FreeNX-kNX] nx bandwidth monitoring

[Aidan Marks]

A crude/quick method - just use iftop on the server to get live stats 
and use the -F option to specify a subnet if that is all you are 
interested in (a branch for example), or there is too many connections.

Il 23/06/09 07:51, Chris Fanning ha scritto:
> On Mon, Jun 22, 2009 at 12:42 PM, Mario Becroft<mb at gem.win.co.nz> wrote:
>> Chris Fanning <christopher.fanning at gmail.com> writes:
>>
>>> I could measure all traffic coming out of the feenx server, but that
>>> would be overall bandwidth usage and I'm looking for a
>>> per-branchoffice count.
>> Surely you could look at the netflow data from your router and identify
>> the nx traffic to the individual branch offices based on the remote
>> address?
>>
>> Alternatively, run tcpdump for a while on the box hosting the nx server
>> and then use ethereal/wireshark to analyze it.
>>
> What about this? I just measure all traffic coming out of the freenx
> server toward the clients.
> I thought I could just devide the bandwith average by the number of users.
> That's a rough guide unless I'm missing something.
> 
>> BTW, performance issues are very likely over ADSL if users are
>> downloading files or doing large data transfers as the latency may
>> become very high.
> 
>> I would say you definitely need QoS or some kind
>> traffic shaping. I am assuming of course that your nx server is not on
>> an ADSL link--if it is, then that will be a major problem due to the low
>> uplink speed and latency of ADSL.
>>
> Well yes, it's ADSL. At the cluster we have two. One only does nx
> traffic, the other does everything else. We won't have access to
> ethernet for a couple of years yet. When I plugged the cluster in we
> saw almost imediately that CUPS traffic killed the desktop experience.
> Not only the branch office that was printing, but all offices suffered
> from the print job. Things are better now with an nx lline.
> 
> People downloading things isn't a problem becuase it's all downloaded
> at the desktop host. Sure, somtimes you can't browse that fast but
> it's still acceptable, and nx traffic isn't affected.
> The problem are the other 'corporate' services that uh.. run on
> proprietary software. .Net and Abode are plooking me. They run at the
> branch offices and are network hogs.
> 
> just a thought. I don't deal with the provider. So, is there some
> trick I can do to get the providers routers to shape for me?
> 
> Cheers,
> Chris.
> 
>> --
>> Mario Becroft <mb at gem.win.co.nz>
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