From 804fbb3f2ec9283f7b778e057a68bfff440a0be6 Mon Sep 17 00:00:00 2001 From: Rui Salvaterra Date: Wed, 30 Mar 2022 22:51:55 +0100 Subject: [PATCH] kernel: ct: size the hashtable more adequately To set the default size of the connection tracking hash table, a divider of 16384 becomes inadequate for a router handling lots of connections. Divide by 2048 instead, making the default size scale better with the available RAM. Signed-off-by: Rui Salvaterra --- net/netfilter/nf_conntrack_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -2576,7 +2576,7 @@ int nf_conntrack_init_start(void) if (!nf_conntrack_htable_size) { nf_conntrack_htable_size - = (((nr_pages << PAGE_SHIFT) / 16384) + = (((nr_pages << PAGE_SHIFT) / 2048) / sizeof(struct hlist_head)); if (BITS_PER_LONG >= 64 && nr_pages > (4 * (1024 * 1024 * 1024 / PAGE_SIZE)))