[ovs-discuss] user space buffering

[Jesse Gross]

On Wed, Jan 22, 2014 at 6:13 AM, mad Engineer <themadengin33r at gmail.com> wrote:
> Hi All,
>
>
>
> Can somebody please explain this.
>
>
> system at xapi3:
>
> lookups: hit:379708115 missed:2695833801 lost:226246534
>
> flows: 2414
>
> port 0: xapi3 (internal)
>
> port 1: eth1
>
> port 2: eth0
>
> port 4: xapi4 (internal)
>
> port 15: vif13.0
>
> port 18: vif14.0
>
> this is from an old OVS version and i can see improved performance on 1.11.
>
> My question is how can we see total buffer size in user space and used
> buffer size?
> Can we increase user space buffer size to higher value to buffer more packet
> to bring down lost field,if not worried about latency?

Additional buffer is not likely to help given the number of losses.
OVS isn't keeping up so it will just fall farther and farther behind.