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- From 804fbb3f2ec9283f7b778e057a68bfff440a0be6 Mon Sep 17 00:00:00 2001
- From: Rui Salvaterra <[email protected]>
- 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 <[email protected]>
- ---
- 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
- @@ -2705,7 +2705,7 @@ 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)))
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