I found following in pgbench.c:
#define MAXCLIENTS 1024 /* max number of clients allowed */
This is used for calculating the upper limit of -c option. However
actual limit is coming from the number of descriptors that select(2)
can watch (besides the number of file descriptors allowed by the
kernal. This is different story though, I think). So it seems the line
would be better looking at FD_SETSIZE in select.h.
Included is the proposed patch. Comments?
--
Tatsuo Ishii
SRA OSS, Inc. Japan
*** pgbench.c 22 Aug 2007 23:03:27 -0000 1.70
--- pgbench.c 25 Aug 2007 02:49:34 -0000
***************
*** 53,59 **** /******************************************************************** * some configurable parameters */
! #define MAXCLIENTS 1024 /* max number of clients allowed */ int nclients = 1; /*
defaultnumber of simulated clients */ int nxacts = 10; /* default number of transactions per clients
*/
--- 53,64 ---- /******************************************************************** * some configurable parameters */
! /* max number of clients allowed */
! #ifdef FD_SETSIZE
! #define MAXCLIENTS FD_SETSIZE
! #else
! #define MAXCLIENTS 1024
! #endif int nclients = 1; /* default number of simulated clients */ int nxacts = 10;
/* default number of transactions per clients */
