[ovs-dev] [PATCH] Add VLAN splinters unit test.

Alex Wang alexw at nicira.com
Tue Jun 25 21:28:01 UTC 2013


Thanks for the answers. This is good enough. ;D


On Tue, Jun 25, 2013 at 2:25 PM, Ben Pfaff <blp at nicira.com> wrote:

> On Tue, Jun 25, 2013 at 02:14:49PM -0700, Alex Wang wrote:
> > But I still want to ask, what is the performance cost caused by using
> > vlan-splinter? Is that in that the using device driver can be faster than
> > matching datapath flow?
>
> Looking up the splinter ports, on input and output, in an extra hash
> table has some cost.  There is also some extra in-kernel time and
> space cost due to the extra devices.  I have not measured whether
> these costs are significant; I cannot guess.
>
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