RE: Jumbo Frames (was Re: MAE-EAST Moving? from Tysons corner toreston VA. )

[sthaug]

> > These are important for many reasons. Without these
> > techniques, we can't
> > even do line rate GigE on "common place" servers, let alone
> > have any CPU
> > left over to do more then just send packets.
> 
> Actually, my testing shows a falure to utilize even 100baseTX
> fully. Even in a switched FDX environment (no collisions) I can't
> achieve line rate without bumping the packet size up. Considering
> that the smallest box is a quad-CPU SMP machine (550Mhz), I don't
> think that there is a CPU shortage <grin>.

The your problem probably lies elsewhere. A decent operating system
(e.g. FreeBSD) can do line rate on 100baseTX with something along the
line of a Pentium-166. Not exactly a very powerful machine by current
standards. (And btw this was measured three years ago...)

Steinar Haug, Nethelp consulting, sthaug@nethelp.no