bytemark/flexnbd-c
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Set TCP_NODELAY on our socket. This decreases average NBD read request RTT from 0.3ms to 0.001ms

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nick
2012-05-31 11:33:31 +01:00
parent c6dd4fbd89
commit e863bffe3d
1 changed files with 9 additions and 1 deletions
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8
src/serve.c
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@@ -15,6 +15,9 @@
#include <stdlib.h> #include <stdlib.h>
#include <errno.h> #include <errno.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
static const int block_allocation_resolution = 4096;//128<<10; static const int block_allocation_resolution = 4096;//128<<10;
static inline void dirty(struct mode_serve_params *serve, off64_t from, int len) static inline void dirty(struct mode_serve_params *serve, off64_t from, int len)
@@ -383,6 +386,11 @@ void serve_open_server_socket(struct mode_serve_params* params)
"Couldn't set SO_REUSEADDR" "Couldn't set SO_REUSEADDR"
); );
SERVER_ERROR_ON_FAILURE(
setsockopt(params->server, IPPROTO_TCP, TCP_NODELAY, &optval, sizeof(optval)),
"Couldn't set TCP_NODELAY"
);
SERVER_ERROR_ON_FAILURE( SERVER_ERROR_ON_FAILURE(
bind(params->server, &params->bind_to.generic, bind(params->server, &params->bind_to.generic,
sizeof(params->bind_to)), sizeof(params->bind_to)),