[ovs-discuss] Coverage counter subfacet_install_fail

[Alex Wang]

Hey Han,

Sorry for this delayed reply,

Please see my comments inline,


On Wed, Jul 30, 2014 at 3:11 AM, Han Zhou <zhouhan at gmail.com> wrote:

> Hi Alex,
>
> In our environment this counter subfacet_install_fail increases
> quickly about 100/sec.
>



Could you show me some ovs-vswitchd.log ?  there should be warnings
about failing to [create] [put] dp flows.  want to check the errno.



> Could you help tell what could be the reasons, and what would be the
> impact?
> This is OVS2.0. (We would like to upgrade, but not this moment in that
> production environment, so it would be good to understand the cause
> and effect).
>
>

For branch-2.0, though we start to have handler threads, the dp flow
installation is still handled by main thread.  so the flow miss handling
performance is not as good as later branches.


Also, what kinds of traffic did you use in testing?




> Best regards,
> Han
>
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