[ovs-discuss] ingress_policing_rate rule taking too long to kick in

[Ben Pfaff]

OVS just configures the kernel QoS implementation.  If there's a delay,
it comes from the kernel and OVS has no influence over it.

On Sun, Sep 11, 2016 at 03:16:25PM -0300, Frederico wrote:
> No luck. I have tried different burst amounts. Ranging from 0 to 1024
> and in every attempt it still takes some 5 to 10 seconds until I see
> any effect. Also, the documentation doesn't say anything about any
> delay regarding ingress policies.
> 
> 2016-09-11 1:01 GMT-03:00 Ben Pfaff <blp at ovn.org>:
> > On Sat, Sep 10, 2016 at 03:14:37PM -0300, Frederico wrote:
> >> I am successfully applying the following speed limiting rules:
> >>
> >> ovs-vsctl set interface s0-eth1 ingress_policing_rate=1024
> >> ovs-vsctl set interface s0-eth1 ingress_policing_burst=0
> >>
> >> However, it takes some seconds (between 5 and 10, usually) until I see
> >> any practical effect on s0-eth1. Are those rules supposed to take all
> >> this time to kick in?
> >
> > I think your burst size is poorly chosen.  Try 80% of 1024, or about
> > 800.  See the documentation for more information.
> 
> 
> 
> -- 
> Thanks,
> Frederico Schardong