[Beowulf] test network link quality?

[Jon Tegner]

What about netpipe?

www.scl.ameslab.gov/netpipe/

/jon

David Mathog wrote:
> Is there a common method for testing the quality of a network link
> between two networked machines?  This is for situations where the link
> works 99.99% of the time, but should work 99.99999% of the time, with
> the failures being dropped packets or whatever.  This would be used for
> tracking down slightly defective patch cables, switch ports, NICs, and
> the like.  Is ping used like this:
>
>   ping -i .0001 -c 1000000 -f targetmachine
>
> adequate?  It gives decent statistics, but doesn't seem like a very good
> simulation of a typical network load, in particular, the packet contents
> aren't varying.
>
> Thanks,
>
> David Mathog
> mathog at caltech.edu
> Manager, Sequence Analysis Facility, Biology Division, Caltech
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