> > how large are the packets and how fast is the box ? Packets go out at an average size of 1024 bytes. The box is dual P4 Xeon 2400/400 so I think it should qualify as "fast" ? I disabled hyperthreading to figure out if it was causing problems. I seem to be able to send packets at a rate in the 900Mbps when just sending them out with a process. If I do similar sending on two interfaces at same time, it tops out at 600Mbps.
The information I´m looking for is how to instrument where the bottleneck is to either tune the parameters or report a bug in PCI or em code. (or just simply swap the GE hardware to something that works better) Pete > on a fast box you should be able to generate packets faster than wire > speed for sizes around 500bytes, meaning that you are going to saturate > the queue no matter how large it is. > > cheers > luigi > > > em-interface is running 66/64 and is there a way to see interface queue depth? > > em0: <Intel(R) PRO/1000 Network Connection, Version - 1.3.14> port 0x3040-0x307f > > mem 0xfc220000-0xfc23ffff irq 17 at device 3.0 on pci2 > > em0: Speed:1000 Mbps Duplex:Full > > pcib2: <PCI to PCI bridge (vendor=8086 device=1460)> at device 29.0 on pci1 > > IOAPIC #2 intpin 0 -> irq 16 > > IOAPIC #2 intpin 6 -> irq 17 > > IOAPIC #2 intpin 7 -> irq 18 > > pci2: <PCI bus> on pcib2 > > > > The OS is 4.7-RELEASE. > > > > Pete > > > > > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > with "unsubscribe freebsd-net" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
