From: Hans-Werner Braun (hwb@nlanr.net)
Date: Mon Jun 18 2001 - 06:28:11 PDT
Years ago, we allocated four "compute engines," then high end PCs
with enough memory/disk, to allow remote people wo work on traces
remotely utilizing an SDSC/UCSD-local machine. Few took us up on
that. At least two of those machines by now are used for other
things, but it is certainly a discussable topic.
> On Sun, 17 Jun 2001, David Cheney wrote:
>
> DC>What analyses (if any) do you use? What do you use them for? If
> DC>these analyses are useful only for selecting traces to download,
> DC>then how well do they suit your needs? What (general) analyses would
> DC>you like to see?
>
> Well, post-processing of traces is a very relevant issue when we are
> dealing with large trace files. Sometimes these traces are huge (see
> Waikato traces) and are just impossible to download through the Internet
> (worldwide). But instead of having general scripts to post-process these
> traces, what about allowing the users to send their own scripts to make
> local processing of these traces?
>
> There are several issues with that too. Security, usage of resources, etc,
> but there are some standardized ways to do that.
>
> About 1,5 years ago we started to deploy some CoralReef-based measurement
> stations in our local Internet2 links here in southern Brazil. We faced
> the same problems with the traces. I wrote a proposal to make the
> distributed analysis of traces, allowing users to delegate scripts (Perl)
> using the SNMP framework.
>
> If there is anyone interested in this research, the paper is available for
> download at http://cscience.org/~hades/papers/ipom2000.ps.gz. It is not a
> "state of the art" paper, but I guess the ideas are valid.
>
> I also brought this issue up because we are starting to deploy passive
> measurement probes at the Brazilian Research Network, and this issue will
> arrise (again) for us soon.
>
> --
> Luis F Balbinot
> hades@inf.ufrgs.br
> http://cscience.org/~hades/
This archive was generated by hypermail 2b30 : Thu Sep 27 2001 - 16:24:41 PDT