[Beowulf] Gigabit switch recommendations
jlb17 at duke.edu
Wed Mar 29 02:50:33 PST 2006
On Tue, 28 Mar 2006 at 10:01pm, Bruce Allen wrote
> I suggest that you do some careful netperf testing of the 2724 before you
> purchase it. We recently tested some 2716 switches with jumbo frames
> (MTU=9000) and found the performance to be well below the advertised 'wire
> speed'. The response from Dell was 'when we say it's wire speed, we don't
> really mean it. This switch is not designed for your application'!
> After discussions with some of their technical people, the conclusion was
> that the switch had enough buffer memory to run wire speed with MTU=1500 but
> not with MTU=9000.
This is exactly the sort of info I was looking for. Specs are one thing,
but real-world benchmarks are far more useful (and harder to find).
Department of Biomedical Engineering
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