On May 11, 2012, at 8:03 PM, Masoud Moshref Javadi wrote: > I read that there are two ways to implement rate-control in OVS: ingress > and egress using QoS queues. > Can these queues use HW queues? > When a packet comes for these queues, will it be handled completely in > kernel space? or it needs to go to userspace too. > Is there any limit for the number of QoS queues?
hi, my understanding is that it uses Linux's traffic control (tc), which is entirely in-kernel. Three places to get started learning about tc are: 'man tc', http://linux-ip.net/articles/Traffic-Control-HOWTO/ and http://lartc.org/howto/lartc.qdisc.html you can see how Open vSwitch interfaces with tc in lib/netdev-linux.c hope this helps. cheers, Andrew _______________________________________________ openflow-discuss mailing list [email protected] https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
