Vincenzo Maffione wrote: > You can have how many threads and processes you want. The constraint is > that there must not be two threads accessing the same ring at the same > time. In this case each pktgen is accessing different rings.
Thanks that was very useful info. I had run this before and got large frame drop so assumed it was a violation of threading constraints. So now I can remove a mutex from my app, which has an RX and TX thread. Running the two pkt-gen instances, I am getting a lot of RX frame drop. Based on counters, the TX frames are making it to the external loopback device, about 1 million frames/sec, which is looping them all back, but the macvtap interface on the host that feeds into the ixgbe/vhost/virtio_net/netmap interface in the VM shows about 80-90% of them as dropped. CPU usage is low in the VM, very roughly 25% for the TX thread and 5% for the RX thread. The frame rate displayed by pkt-gen and the CPU displayed by top is bouncing around. Joe Buehler _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
