[ovs-dev] [PATCH] flow: Wildcard UDP ports when using SYMMETRIC_L4 hash for select groups.

Ben Pfaff blp at ovn.org
Tue Jul 16 22:30:43 UTC 2019


On Wed, Jul 10, 2019 at 07:02:30PM +0530, Vishal Deep Ajmera wrote:
> UDP source and destination ports are not used to derive the hash index
> used for selecting the bucket in case of SYMMETRIC_L4 hash based select
> groups. However, they are un-wildcarded in the megaflow entry match criteria.
> This results in distinct megaflow entry being created for each pair of UDP
> source and destination ports unnecessarily and causes significant performance
> deterioration when the megaflow cache limit is reached.
> 
> This patch wildcards UDP ports when using select group with SYMMETRIC_L4
> hash function.
> 
> Signed-off-by: Vishal Deep Ajmera <vishal.deep.ajmera at ericsson.com>
> CC: Jan Scheurich <jan.scheurich at ericsson.com>

Applied to master, thanks!


More information about the dev mailing list