Flowtables -- any tuning hints?

[Mike Tancsa]

At 03:09 AM 7/12/2009, Kip Macy wrote:

>You want to avoid hash collisions. So, generally speaking you want the
>hash table to be sized 2x larger than the number of unique connection
>destinations.  You want the maximum number of flows to be as large as
>the maximum number of unique destinations x number of cores. When you
>get to the case of hundreds of thousands of unique destinations as in
>the case of a small ISP doing IP forwarding, you're probably better
>off disabling the flowtable.

Speaking of which, are there are specific tuning suggestions for such 
a case ? eg. 250k routes and a few hundred Mb of traffic ?


         ---Mike