From cb2d45da81c86d5191b19d0f67732a854bc0253c Mon Sep 17 00:00:00 2001 From: David Teigland Date: Fri, 12 Nov 2010 11:12:55 -0600 Subject: dlm: use TCP_NODELAY Nagling doesn't help and can sometimes hurt dlm comms. Signed-off-by: David Teigland --- fs/dlm/lowcomms.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'fs') diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 1d4e644c6589..2bedb0ac5f92 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -926,6 +926,7 @@ static void tcp_connect_to_sock(struct connection *con) struct sockaddr_storage saddr, src_addr; int addr_len; struct socket *sock = NULL; + int one = 1; if (con->nodeid == 0) { log_print("attempt to connect sock 0 foiled"); @@ -971,6 +972,11 @@ static void tcp_connect_to_sock(struct connection *con) make_sockaddr(&saddr, dlm_config.ci_tcp_port, &addr_len); log_print("connecting to %d", con->nodeid); + + /* Turn off Nagle's algorithm */ + kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, (char *)&one, + sizeof(one)); + result = sock->ops->connect(sock, (struct sockaddr *)&saddr, addr_len, O_NONBLOCK); @@ -1022,6 +1028,10 @@ static struct socket *tcp_create_listen_sock(struct connection *con, goto create_out; } + /* Turn off Nagle's algorithm */ + kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, (char *)&one, + sizeof(one)); + result = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one)); -- cgit v1.2.3-58-ga151