Re: Current 2.6.x TSO state

["David S. Miller" <davem@xxxxxxxxxxxxx>]

On Fri, 1 Oct 2004 22:01:02 +0200
Andi Kleen <ak@xxxxxxx> wrote:

> > As mentioned, the TCP receive buffer auto-tuning takes care
> > of all of this in 2.6.6 and later.  It's just 2.6.5 doesn't
> > have John Heffner's auto-tuning code which is why your test
> > case is so stuck in the mud.
> > 
> > Also, the stretch ACK's are quite normal.  If the receiver can't
> > advertize a larger window, we won't spit out an ACK until
> > the ack timeout.
> 
> Ok, but why is the TSO case still slower? 

It isn't for me.  With the auto-tuning code present at the
receiver, at least in my case, the TSO case runs more quickly
since my sender is PCI bandwidth limited since the tg3 sits
on a 32mhz/33bit PCI bus.