[Soekris] Net 4801 performance

[Stuart Henderson]

On 2006/09/05 10:20, Jason Dixon wrote:
> Run "vmstat 1" before starting the transfer.  I'm betting that you'll
> see your traps (and by extension, cpu load) jump through the roof as
> soon as you start the test.  From my experience, the sis interfaces
> suck.

There's little difference between sis(4), sk(4) and em(4) on a 4801,
at least with OpenBSD. 21mb throughput to the box itself sounds about
right. Routing throughput is usually a little higher (but not greatly).

These are _low-power_ boxes, not quick boxes. PCI throughput seems
particularly low compared to a standard PC (most of the cpu time
will be spent in interrupt processing). Think maybe cisco 2600/3600
or so in terms of throughput (4801 is likely to be a lot more
useful at running BGP though).