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Performance improvement or streaming large result sets.

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-bash-4.1$ time mysql -h 127.0.0.1 -P4007 -umassi -pmassi information_schema -q -e "select * from engines a, engines b, engines c, engines d, engines e;" > /dev/null

real	1m16.137s
user	0m0.660s
sys	0m0.392s
-bash-4.1$ time mysql -h 127.0.0.1 -P4007 -umassi -pmassi information_schema -q -e "select * from engines a, engines b, engines c, engines d, engines e;" > /dev/null

real	0m0.980s
user	0m0.944s
sys	0m0.027s
This commit is contained in:
Mark Riddoch
2014-09-16 12:37:57 +01:00
parent dc6db1d3d4
commit f3d32087d8
4 changed files with 18 additions and 6 deletions
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3
server/modules/protocol/mysql_client.c
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@ -1180,7 +1180,10 @@ int gw_MySQLAccept(DCB *listener)
conn_open[c_sock] = true;
#endif
/* set nonblocking */
sendbuf = GW_BACKEND_SO_SNDBUF;
setsockopt(c_sock, SOL_SOCKET, SO_SNDBUF, &sendbuf, optlen);
sendbuf = GW_BACKEND_SO_RCVBUF;
setsockopt(c_sock, SOL_SOCKET, SO_RCVBUF, &sendbuf, optlen);
setnonblocking(c_sock);
client_dcb = dcb_alloc(DCB_ROLE_REQUEST_HANDLER);