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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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11
server/include/gw.h
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@ -23,8 +23,15 @@
// network buffer is 32K
#define MAX_BUFFER_SIZE 32768
// socket send buffer for backend
#define GW_BACKEND_SO_SNDBUF 1024
/**
* Configuration for send and receive socket buffer sizes for
* backend and cleint connections.
*/
#define GW_BACKEND_SO_SNDBUF 32768
#define GW_BACKEND_SO_RCVBUF 32768
#define GW_CLIENT_SO_SNDBUF 32768
#define GW_CLIENT_SO_RCVBUF 32768
#define GW_NOINTR_CALL(A) do { errno = 0; A; } while (errno == EINTR)
#define GW_MYSQL_LOOP_TIMEOUT 300000000