diff -Naurp db_old/src/os/os_cpu.c db_new/src/os/os_cpu.c
--- db_old/src/os/os_cpu.c	2012-05-11 12:57:54.000000000 -0500
+++ db_new/src/os/os_cpu.c	2015-08-12 14:00:37.232498880 -0500
@@ -40,6 +40,8 @@ __os_cpu_count()
 	long nproc;
 
 	nproc = sysconf(_SC_NPROCESSORS_ONLN);
+	if (nproc > 1024)
+		nproc = 1024;
 	return ((u_int32_t)(nproc > 1 ? nproc : 1));
 #else
 	return (1);
