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On Thu, Mar 22, 2001 at 08:13:35AM +0200, Jukka Marin wrote:
> On Wed, Mar 21, 2001 at 05:35:54PM -0400, Jared D. McNeill wrote:
> > On Wed, 21 Mar 2001, Jarom=EDr Dolecek wrote:
> > > Are there any people with 3c509 ISA ? What is the performance people
> > > get for it or other cards using ep(4) driver ?
> >=20
> > I have two 3c509B's in my NAT box, they push > 980KB/s through them and
> > out my internet connection without a problem. Full-duplex would be nice
> > though..
>=20
> I see similar numbers on several systems, but you need a pentium class
> machine for that.

and the 8 kBytes of buffer memory mentioned earlier is not enough for this.
Would be less then 3 full-length packets per direction. I suspect that
the receiver is losing packets while any processing at splnet() happens.

Look at netstat -s for tcp; I guess that you see lots of retransmissions
on the machine that does the pushing.

Regards,
	-is

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