[ovs-dev] xlate_select_group() not being invoked for every packet

[Mohammad Ali Salahuddin]

Adding ctx->xout->slow |= SLOW_CONTROLLER; to xlate_select_group() resolved my issue. Thank you *very* much.

So, does this statement completely shut off caching? How does it work under the hood? I am curious because intuitively "SLOW_CONTROLLER" would mean more caching should be performed at the switch (as the connection with the controller is slow). However, it seems to be working in the opposite way.

Any insight into this would be really appreciated.

Thanks!! 
> Date: Tue, 18 Feb 2014 09:37:21 -0800
> From: blp at nicira.com
> To: saeenali at hotmail.com
> CC: dev at openvswitch.org
> Subject: Re: [ovs-dev] xlate_select_group() not being invoked for every packet
> 
> You can add
>     ctx->xout->slow |= SLOW_CONTROLLER;
> to xlate_select_group().
> 
> On Tue, Feb 18, 2014 at 09:46:03AM -0700, Mohammad Ali Salahuddin wrote:
> > Is there a way to turn off this caching?
> > Thanks!
> > 
> > > Date: Tue, 18 Feb 2014 08:32:54 -0800
> > > Subject: Re: xlate_select_group() not being invoked for every packet
> > > From: blp at nicira.com
> > > To: saeenali at hotmail.com
> > > CC: dev at openvswitch.org
> > > 
> > > On Tue, Feb 18, 2014 at 7:31 AM, Mohammad Ali Salahuddin
> > > <saeenali at hotmail.com> wrote:
> > > > Then, I started to a log a message whenever this function was invoked. To my
> > > > surprise, the logging revealed that this function is not being invoked for
> > > > every packet.
> > > >
> > > > Is this the expected behavior? Am I missing something?
> > > 
> > > Open vSwitch caches forwarding choices for performance.
> >  		 	   		  
> 
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> 
 		 	   		  
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