On Mon, 29 Jul 2002, Patrick Schaaf wrote:
> > They also have a lot of problems with their per-packet computations.
> > Robert and I spent a short time looking at "this thing that is making
> > us look bad" (perfomance wise) and talked to Harald.
> Do you have written up somewhere what kind of performance problems you were
> seeing, under which conditions (hash bucket count, number of tracked
> connections, packet load)
Just standard setup in forwarding. Infact you only need one or two flows
active to verify this -- which leads me to believe hashing may play a
smaller role in the whole problem.
What i have seen and reported by many people (someone seems to have gone
one step further and documented numbers, but cant find his email right
now). Take Linux as a router, it routes at x% of wire rate. Load
conntracking and watch it go down another 25% at least.
> > Something that looked like needs improvement at first glance was the aging
> > and hashing schemes.
> Regarding the hashing schemes, please see discussions on netfilter-devel
> over the last weeks:
I think hashing is one of the problems. What performance improvemet are
you seeing? (couldnt tell from looking at your data)