Jack Vogel wrote: > 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? Loopback can sometimes be a lot slower than actual traffic due to scheduling considerations. Robert Watson has more information on this. > > Jack > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org"Received on Fri Jul 20 2007 - 20:10:44 UTC
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