Re: gigabit trouble

[Francois Romieu <romieu@xxxxxxxxxxxxx>]

Bart Alewijnse <scarfboy@xxxxxxxxx> :
[...]
> Definately. I've now seen speeds up to 22MB/s, but only in pure
> network benching (netio), and only with udp, although I guess
> that makes a some sense.

It seems low. On a non-napi setup, I'd expect your celeron box to
stand at least 20~30 kIRQ/s if the hardware is not flawed.

[...]
> I assume the 20MB/s top speed on my gbit cards is io limiting,
> and possibly the fact that they're 32bit cards in 33mhz slots.
> Still, it's far from impressive. Any suggestions (on where to
> go) about improving it?

See Documentation/networking/ip-sysctl.txt and the r/wmem parameters
for a start. The 2.6.8-rc2-mm1 version of the r8169 driver is suggested.

A dumb 'vmstat 1' output during test could give some hint.

Can I assume that the systems are stable if not fast ?

--
Ueimor