pgpool2.git / summary / log / commit / refs

commit    a7174263552cae162d571e0e97387bd541fa2a27
Author:   Tatsuo Ishii <ishii@postgresql.org>
Date:     Thu May 10 02:28:22 2012 +0000

    Fix load balance in Solaris.  If compiled in Solaris, use
    srand()/rand() instead of srandom()/random().  Problem is, random() in
    Solaris does not respect RAND_MAX (it's 2^16-1 in Solaris). So using
    random() in Solaris results in strange load balancing calculation.
    Use srand()/rand() instead although they produce lesser quality random
    numbers. Problem reported at [pgpool-general: 396].


 child.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/child.c b/child.c
index 203e58000..23df92f33 100644
--- a/child.c
+++ b/child.c
@@ -141,7 +141,11 @@ void do_child(int unix_fd, int inet_fd)
 
 	/* initialize random seed */
 	gettimeofday(&now, &tz);
+#if defined(sun) || defined(__sun)
+	srand((unsigned int) now.tv_usec);
+#else
 	srandom((unsigned int) now.tv_usec);
+#endif
 
 	/* initialize system db connection */
 	init_system_db_connection();
@@ -1907,7 +1911,13 @@ int select_load_balancing_node(void)
 			total_weight += BACKEND_INFO(i).backend_weight;
 		}
 	}
+
+#if defined(sun) || defined(__sun)
+	r = (((double)rand())/RAND_MAX) * total_weight;
+#else
 	r = (((double)random())/RAND_MAX) * total_weight;
+#endif
+
 	total_weight = 0.0;
 	for (i=0;i<NUM_BACKENDS;i++)
 	{


[parent: 5b2cd3338235]