commit fd90b29d757827ab12d6669292612308ec249532
author Eric Dumazet <edumazet@google.com> Fri Nov 30 10:08:52 2012 +0000
committer David S. Miller <davem@davemloft.net> Sat Dec 01 11:36:37 2012 -0500
tree ba0a7cbd8520e3e7d4a45ff91e9e1b5ea4850810
parent abe303dbc22bd16cde6f1a62fc25f63cc254caf7

tcp: change default tcp hash size

As time passed, available memory increased faster than number of
concurrent tcp sockets.

As a result, a machine with 4GB of ram gets a hash table
with 524288 slots, using 8388608 bytes of memory.

Lets change that by a 16x factor (one slot for 128 KB of ram)

Even if a small machine needs a _lot_ of sockets, tcp lookups are now
very efficient, using one cache line per socket.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>