diff options
Diffstat (limited to 'target/linux/generic/hack-5.10/661-kernel-ct-size-the-hashtable-more-adequately.patch')
| -rw-r--r-- | target/linux/generic/hack-5.10/661-kernel-ct-size-the-hashtable-more-adequately.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/target/linux/generic/hack-5.10/661-kernel-ct-size-the-hashtable-more-adequately.patch b/target/linux/generic/hack-5.10/661-kernel-ct-size-the-hashtable-more-adequately.patch new file mode 100644 index 0000000000..dd67c76b13 --- /dev/null +++ b/target/linux/generic/hack-5.10/661-kernel-ct-size-the-hashtable-more-adequately.patch @@ -0,0 +1,25 @@ +From 804fbb3f2ec9283f7b778e057a68bfff440a0be6 Mon Sep 17 00:00:00 2001 +From: Rui Salvaterra <rsalvaterra@gmail.com> +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 <rsalvaterra@gmail.com> +--- + 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))) |