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dlm: use TCP_NODELAY
Nagling doesn't help and can sometimes hurt dlm comms. Signed-off-by: David Teigland <teigland@redhat.com>
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1 changed files with 10 additions and 0 deletions
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@ -926,6 +926,7 @@ static void tcp_connect_to_sock(struct connection *con)
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struct sockaddr_storage saddr, src_addr;
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int addr_len;
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struct socket *sock = NULL;
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int one = 1;
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if (con->nodeid == 0) {
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log_print("attempt to connect sock 0 foiled");
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@ -971,6 +972,11 @@ static void tcp_connect_to_sock(struct connection *con)
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make_sockaddr(&saddr, dlm_config.ci_tcp_port, &addr_len);
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log_print("connecting to %d", con->nodeid);
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/* Turn off Nagle's algorithm */
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kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, (char *)&one,
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sizeof(one));
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result =
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sock->ops->connect(sock, (struct sockaddr *)&saddr, addr_len,
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O_NONBLOCK);
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@ -1022,6 +1028,10 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
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goto create_out;
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}
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/* Turn off Nagle's algorithm */
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kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, (char *)&one,
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sizeof(one));
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result = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
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(char *)&one, sizeof(one));
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