[ovs-discuss] What is the role of ovsdb-server and vswitchd?

[Ben Pfaff]

On Wed, Sep 21, 2011 at 11:46:36AM -0700, Aishwarya wrote:
> That was very helpful. Thanks! One of the slides say that the kernel module
> has no flow expiration . I am guessing this means that as it gets to know
> about more and more flows from vswitchd, these will always be there in the
> kernel as long as it is loaded?

No.  Userspace deletes flows that fall idle for some time.

> Also, If I have lets say 7000 flows, and send some traffic for each flow, so
> that the kernel module ultimately knows about all the flows. How fast is its
> lookup now when it starts receiving packets, lets say of the oldest flow?

Fast.  It's a hash table.