Is there a way to measure it accurately? or a command that can be run on ovs, 
that gives you information about memory usage?

> Subject: Re: [ovs-discuss] Rule Table Entries
> From: jpet...@ovn.org
> Date: Wed, 15 Jun 2016 23:29:35 -0700
> CC: discuss@openvswitch.org
> To: tooba-f...@hotmail.com
> 
> 
> > On Jun 15, 2016, at 11:24 PM, Tooba Ahsen <tooba-f...@hotmail.com> wrote:
> > 
> > Is there a way to determine exactly how much memory a flow table rules 
> > takes up in the openvswitch?
> > I've read quite a lot that it takes a few hundred bytes but how would you 
> > determine this exactly?
> 
> We haven't measured this recently, but the rule of thumb we have used is 
> roughly 1KB for each rule.
> 
> --Justin
> 
> 
                                          
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