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authorRobert Olsson <robert.olsson@its.uu.se>2005-10-04 16:01:58 -0400
committerDavid S. Miller <davem@davemloft.net>2005-10-04 16:01:58 -0400
commite6308be85afee685347fa3440bed10faaa5d6c1a (patch)
tree9cb766b5b66f700528722b2e92745a2a6dcc3288 /mm/rmap.c
parent87bf9c97b4b3af8dec7b2b79cdfe7bfc0a0a03b2 (diff)
[IPV4]: fib_trie root-node expansion
The patch below introduces special thresholds to keep root node in the trie large. This gives a flatter tree at the cost of a modest memory increase. Overall it seems to be gain and this was also proposed by one the authors of the paper in recent a seminar. Main table after loading 123 k routes. Aver depth: 3.30 Max depth: 9 Root-node size 12 bits Total size: 4044 kB With the patch: Aver depth: 2.78 Max depth: 8 Root-node size 15 bits Total size: 4150 kB An increase of 8-10% was seen in forwading performance for an rDoS attack. Signed-off-by: Robert Olsson <robert.olsson@its.uu.se> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/rmap.c')
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