svn commit: r191259 - head/sys/netinet

Kip Macy kmacy at freebsd.org
Mon Apr 20 15:46:46 UTC 2009


> Hmm, such a scheme raises suspicion that in your particular case very few flow
> cache lookups could be serviced from CPU caches. 16MB + 80MB sounds to be in
> range with memory footprint of a DFZ table stored in our normal radix tree -
> so where's the benefit of the flow cache?
>

Well its a contrived example, you're not going to have any locality in
either case. In a more common CDN scenario you don't have more than
20k clients, but FreeBSD could still not be used as an edge router
because it could not handle forwarding 20Gbps.

-Kip


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