Reduce memory usage for sdallocx() test_alignment_and_size.
diff --git a/test/integration/sdallocx.c b/test/integration/sdallocx.c
index b84817d..f92e058 100644
--- a/test/integration/sdallocx.c
+++ b/test/integration/sdallocx.c
@@ -1,7 +1,7 @@
 #include "test/jemalloc_test.h"
 
-#define	MAXALIGN (((size_t)1) << 25)
-#define	NITER 4
+#define	MAXALIGN (((size_t)1) << 22)
+#define	NITER 3
 
 TEST_BEGIN(test_basic)
 {