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

Ben Pfaff blp at nicira.com
Wed Sep 21 04:46:50 UTC 2011


Yes, ovs-vswitchd tells the kernel module what to do.

On Tue, Sep 20, 2011 at 09:40:28PM -0700, Aishwarya wrote:
> Ok. So what happens with other packets that belong to this same flow? Do
> they get routed without the help of vswitchd then? If yes, how does this
> happen?
> 
> Thanks,
> Aish
> 
> On Tue, Sep 20, 2011 at 9:40 PM, Ben Pfaff <blp at nicira.com> wrote:
> 
> > On Tue, Sep 20, 2011 at 09:36:30PM -0700, Aishwarya wrote:
> > > Thanks for your detailed reply. Does this mean that every time a packet
> > > arrives, it is first sent to the user process vswitchd and then sent back
> > > into the kernel for forwarding, which means there will be a
> > kernel-to-user
> > > space and back to kernel space context switch for every packet that
> > arrives?
> >
> > No.  There is one such transition for each new flow.
> >



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