My planned work on networking stack

Gleb Smirnoff glebius at
Tue Mar 2 14:24:11 PST 2004

On Tue, Mar 02, 2004 at 02:16:13PM -0800, Randy Bush wrote:
R> > I do not insist that AS pathes in kernel are good idea. If you
R> > show me an other way to get AS information when constructing
R> > netflow exports in kernel, I'd be thankful.
R> do we need to rediscover why flow export places a large processor
R> burden on criscos, junipers, prockets, ...?

  Not because of AS path info, definitely. Netflow does route lookup
anyway to get nexthop and route masks. If route lookup will return
a pointer to a structure with one more field it will not introduce
ant additional load.
  My experience shows, that most load in flow processing is caused
by: 1) memory allocation, 2) expiry lookups.

Totus tuus, Glebius.

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