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author | David S. Miller <davem@davemloft.net> | 2005-06-18 22:49:40 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2005-06-18 22:49:40 -0700 |
commit | e52c1f17e4ea8e61bd26eb25f1a184202693c2b9 (patch) | |
tree | d6094325ad30bf48f5296fd0faab85e8b9d76227 /net/core/request_sock.c | |
parent | 2ad69c55a282315e6119cf7fd744f26a925bdfd2 (diff) | |
download | lwn-e52c1f17e4ea8e61bd26eb25f1a184202693c2b9.tar.gz lwn-e52c1f17e4ea8e61bd26eb25f1a184202693c2b9.zip |
[NET]: Move sysctl_max_syn_backlog into request_sock.c
This fixes the CONFIG_INET=n build failure noticed
by Andrew Morton.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/request_sock.c')
-rw-r--r-- | net/core/request_sock.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/core/request_sock.c b/net/core/request_sock.c index 78fd60a46bf2..bb55675f0685 100644 --- a/net/core/request_sock.c +++ b/net/core/request_sock.c @@ -18,6 +18,22 @@ #include <net/request_sock.h> +/* + * Maximum number of SYN_RECV sockets in queue per LISTEN socket. + * One SYN_RECV socket costs about 80bytes on a 32bit machine. + * It would be better to replace it with a global counter for all sockets + * but then some measure against one socket starving all other sockets + * would be needed. + * + * It was 128 by default. Experiments with real servers show, that + * it is absolutely not enough even at 100conn/sec. 256 cures most + * of problems. This value is adjusted to 128 for very small machines + * (<=32Mb of memory) and to 1024 on normal or better ones (>=256Mb). + * Further increasing requires to change hash table size. + */ +int sysctl_max_syn_backlog = 256; +EXPORT_SYMBOL(sysctl_max_syn_backlog); + int reqsk_queue_alloc(struct request_sock_queue *queue, const int nr_table_entries) { |