[ovs-discuss] ovs performance statistics

[Jesse Gross]

On Wed, Jul 25, 2012 at 11:56 PM, Hanish Gogada
<hanish.gogada at oneconvergence.com> wrote:
> i am trying to gauge the performance of ovs using 64K flows. i am pumping
> the packets of 1K size
>  on 8 core machine with a 10 gig interface with line rate  1.2Mpps,  ovs is
> at receiving side
> on 8 core machine having 10 gig interface. I observed that with 64K flows
> the ovs is switching
> only 30% of line rate. when i disabled  periodic deletion of flows it was
> able to switch the line rate
>
> can any one tell me, whether this is the performance range of  ovs, can this
> be bettered by any
> configuration of the ovs. if so please suggest me some configuration to
> improve performance of ovs.

You can use
ovs-vsctl set bridge BR other-config:flow-eviction-threshold=X
to set the number of flows kept in the kernel table above the expected
number of sustained flows.