[ovs-discuss] OVS NetFlow export - is there passive timeout?

Ben Pfaff blp at nicira.com
Wed Nov 5 16:16:06 UTC 2014


On Wed, Nov 05, 2014 at 04:59:30PM +0100, Martin Vizvary wrote:
> does anybody know if and how is implemented passive timeout for flow
> expiration?
> 
> I was playing around with it, but you can configure only active timeout.
> (passive timeout is approximately 1s - I guess it is connected with
> next_timeout cycle only...

The passive timeout triggers at the same time that OVS removes a flow
from the datapath.  That is managed internally to OVS mainly to ensure a
good balance between performance, CPU usage, and memory usage.  It's
probably not a good idea to try to adjust it just to change the NetFlow
passive timeout.



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