[ovs-discuss] OpenVSwitch flow forwarding
jesse at nicira.com
Tue Feb 7 21:21:30 UTC 2012
On Mon, Feb 6, 2012 at 9:25 PM, Masoud Moshref Javadi
<masood.moshref.j at gmail.com> wrote:
> It seems that the bottleneck can be the lookup in these userspace when we
> have lots of new flows.
> My question is how many table we can have in the userspace?
I think you're confusing OpenFlow tables with unique sets of
wildcards. The former has a limit but each one is not scanned on flow
lookup. The later depends on the wildcards in the flows that are
> How many entry the kernel table can have?
Like I said, it is primarily restricted by userspace.
> Why did you use one table for each wildcards set, and not use tree based
> data structures like R+ - trees?
The number of bits that can be wildcarded is large but the number of
unique sets of wildcards is usually small in practice.
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