This change in pgbench.c:
revision 1.71 date: 2007-08-25 10:21:14 +0100; author: ishii; state: Exp; lines: +7 -2; The upper limit for -c
optionof pgbench is now obtained from (FD_SETSIZE - 10) rather than a hardwired number.
Turns out to be, perhaps, ill-advised on Windows where FD_SETSIZE defaults to
64 but can be adjusted by #defining it before including winsock.h. At least
that's what I'm reading on google, I don't know have a Windows machine to test
with myself. But it's definitely true that on Windows you get an error if you
try to run pgbench with more than 54 clients.
I think this can be solved by simply adding this:
--- pgbench.c 27 Sep 2007 21:39:43 +0100 1.72
+++ pgbench.c 22 Oct 2007 10:55:57 +0100
@@ -24,6 +24,7 @@#include <ctype.h>#ifdef WIN32
+#define FD_SETSIZE 1024#include <win32.h>#else#include <sys/time.h>
But as I said, I can't test it conveniently. Plus Postgres currently is
bombing out with more than 45 clients anyways due to the handles issue that
others are looking into (hence finding this limitation).
-- Gregory Stark EnterpriseDB http://www.enterprisedb.com