Re: 2.6.7 tulip performance (with NAPI)

[Robert Olsson <Robert.Olsson@xxxxxxxxxxx>]

Ben Greear writes:

 > You must have several PCI-X busses on that system?  From what I can tell,
 > my dual-xeon system (2.8Ghz, X5DPA-GG motherboard) just can't handle the
 > PCI bandwidth.  I still have processing power it appears, and I see lots
 > of hard-start-xmit errors out of the pro/1000 NICs, so I assume I am
 > able to drive them as hard as they can go...  It may be that receiving
 > the pkts, as I am doing, also decreases transmit in more than a linear 
 > fashion.

 Yes the board has 4 different PCI-bus from what I remember it's was a 
 Supermicro X5DL8-GG. Yes you need bus bandwith from what I've seen even 
 133 MHz PCI-X is limiting the small packet performance at GIGE speeds.


 > >  I'm interested if anyone has done any pktgen performance tests with
 > >  w. S2IO or other 10G card we need to upgrade the lab equipment. 
 > >  Both 64 byte pkts and MTU sized pkts is interesting.  Anyone?
 > 
 > Not I, but would be interested as well!

 Andi got one... ;-)

                                                --ro