diff --git a/include/sys/kmem.h b/include/sys/kmem.h
index adbaea93198c..5875dfff6886 100644
--- a/include/sys/kmem.h
+++ b/include/sys/kmem.h
@@ -395,7 +395,7 @@ extern struct rw_semaphore spl_kmem_cache_sem;
 #define SPL_KMEM_CACHE_DELAY		15	/* Minimum slab release age */
 #define SPL_KMEM_CACHE_REAP		0	/* Default reap everything */
 #define SPL_KMEM_CACHE_OBJ_PER_SLAB	16	/* Target objects per slab */
-#define SPL_KMEM_CACHE_OBJ_PER_SLAB_MIN	8	/* Minimum objects per slab */
+#define SPL_KMEM_CACHE_OBJ_PER_SLAB_MIN	1	/* Minimum objects per slab */
 #define SPL_KMEM_CACHE_ALIGN		8	/* Default object alignment */
 
 #define POINTER_IS_VALID(p)		0	/* Unimplemented */
diff --git a/module/splat/splat-kmem.c b/module/splat/splat-kmem.c
index 76643db18a8b..db787ae9265e 100644
--- a/module/splat/splat-kmem.c
+++ b/module/splat/splat-kmem.c
@@ -799,6 +799,10 @@ splat_kmem_test6(struct file *file, void *arg)
 	if (rc)
 		return rc;
 
+	rc = splat_kmem_cache_test(file, arg, name, 16*1024*1024, 0, KMC_VMEM);
+	if (rc)
+		return rc;
+
 	/* Off slab (default + kmem + vmem) */
 	rc = splat_kmem_cache_test(file, arg, name, 256*1024, 0, KMC_OFFSLAB);
 	if (rc)
@@ -811,6 +815,11 @@ splat_kmem_test6(struct file *file, void *arg)
 
 	rc = splat_kmem_cache_test(file, arg, name, 1024*1024, 0,
 	    KMC_VMEM | KMC_OFFSLAB);
+	if (rc)
+		return rc;
+
+	rc = splat_kmem_cache_test(file, arg, name, 16*1024*1024, 0,
+	    KMC_VMEM | KMC_OFFSLAB);
 
 	return rc;
 }