2007/10/3, Cristian KLEIN <[EMAIL PROTECTED]>: > Hi list, > > A few days ago I tested whether a FreeBSD 7 box is able to handle Gigabit > traffic. So I used a Cisco 7600 and added static routes from the router to the > box and from the box to the router, so that some packets would loop between > the > two. Then I externally injected 30Mbps of "ping -f -t 255 -s <size>", which > should have generated a "maximum" of 3,6Gbps. I then used nload on the box to > graph the bandwidth. > > The box is a Intel Core 2 Duo, with a PCIe re NIC. I used FreeBSD i386 with > polling and fastforwarding. No WITNESS, INVARIANTS or firewalls. > > I was amased to see that injecting 1000 bytes packets gave a maximum > throughput > of 650Mbps, while 1400 bytes gave 750Mbps. During both tests one core was 98% > idle, while the other one was more than 80% idle. > > Can anybody point me what the bottleneck of this configuration is? CPU was > mostly idle and PCIe 1x should carry way more. Or is the experiment perhaps > fundamentally flawed? > > Thanks. > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > >
Using icmp and especially "ping -f" does not sound like a good idea for testing network thoroughput. Maybe you should consider something like iperf or netperf (/usr/ports/benchmarks/iperf and /usr/ports/benchmarks/netperf) -- Niki _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
