Slow networkperformance in current?

Jack Vogel jfvogel at gmail.com
Fri Jul 20 21:51:37 UTC 2007


On 7/20/07, Ståle Kristoffersen <staale at kristoffersen.ws> wrote:
> On 2007-07-20 at 12:03, Jack Vogel wrote:
> > The stack being capable, as I said, of delivering the goods says nothing
> > of the driver, what NIC is it? Did you ask if anyone else with that
> > hardware is seeing a problem, I came into this thread somewhat late.
>
> I'm running this nic:
> re0: <RealTek 8168/8111B PCIe Gigabit Ethernet> port 0x7e00-0x7eff mem
> 0xfd3ff000-0xfd3fffff irq 18 at device 0.0 on pci3
>
> But I'm guessing it's not the NIC or its drivers fault, because I get the
> same performance (with 100% CPU) using localhost.

Well,  I just tried that on one of the machines here in my cube, running
iperf across a localhost connection I get 1.25 Gb/s, what do you see?
A second slightly older box doing the same thing only gets 977 Mb, I
wonder if that's front side bus relative, would make sense.

And what do you see?

Jack


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