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Re: [ns] problem with trace-all
On Tue, 31 Oct 2000, John Heidemann wrote:
> >As of now, thats the only format available.
>
> Yes, there's only one trace format available, and (as others
> suggested) you can filter or compress it on the fly. But the best way
> to get a smaller trace is to not do trace-all (if you can). Often
> times all that's relevant is a particular link or links (say, a
> pre-determined bottleneck link)---just trace those links, not all the
> links. This can make a HUGE savings in trace size, since packets are
> traced once rather than once per hop.
The problem there is the 'if you can'; often, what you need to see
doesn't map neatly onto simple link tracing. (Say, you've got a _lot_
of traffic flowing across links, but you're only interested in a
particular set of flows.)
Hence my Bright Idea in:
http://www.isi.edu/nsnam/archive/ns-users/webarch/2000/msg03898.html
L.
why postfilter when you can prefilter?
<[email protected]>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>