| commit | fd90b29d757827ab12d6669292612308ec249532 | |
| author | Eric Dumazet <edumazet@google.com> | |
| Fri, 30 Nov 2012 10:08:52 +0000 (30 10:08 +0000) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Sat, 1 Dec 2012 16:36:37 +0000 (1 11:36 -0500) | ||
| tree | ba0a7cbd8520e3e7d4a45ff91e9e1b5ea4850810 | treesnapshot (tar.gz zip) |
| parent | abe303dbc22bd16cde6f1a62fc25f63cc254caf7 | commitdiff |
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>
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>
| net/ipv4/tcp.c | diffblobblamehistory |