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Commit d94ce9b2 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

ipv4: 16 slots in initial fib_info hash table 



A small host typically needs ~10 fib_info structures, so create initial
hash table with 16 slots instead of only one. This removes potential
false sharing and reallocs/rehashes (1->2->4->8->16)

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0e71c55c

net/ipv4/fib_semantics.c

+1 −1
Original line number Diff line number Diff line
@@ -803,7 +803,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg) 
		unsigned int bytes;



		if (!new_size)

			new_size = 1;

			new_size = 16;

		bytes = new_size * sizeof(struct hlist_head *);

		new_info_hash = fib_info_hash_alloc(bytes);

		new_laddrhash = fib_info_hash_alloc(bytes);