From: Eric Dumazet <edumazet@google.com>
Date: Fri, 30 Nov 2012 10:08:52 +0000 (+0000)
Subject: tcp: change default tcp hash size
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~142
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd90b29d757827ab12d6669292612308ec249532;p=pandora-kernel.git

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>
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