diff --git a/sys/vm/uma_core.c b/sys/vm/uma_core.c
index 331a04434ccf..0cb5800367cb 100644
--- a/sys/vm/uma_core.c
+++ b/sys/vm/uma_core.c
@@ -1996,6 +1996,10 @@ keg_layout(uma_keg_t keg)
 			    "(ipers %u * rsize %u) / slabsize %#x = %u%% eff",
 			    keg->uk_name, kl.format, kl.ipers, rsize,
 			    kl.slabsize, UMA_FIXPT_PCT(kl.eff));
+			printf("keg %s layout: format %#x "
+			    "(ipers %u * rsize %u) / slabsize %#x = %u%% eff",
+			    keg->uk_name, kl.format, kl.ipers, rsize,
+			    kl.slabsize, UMA_FIXPT_PCT(kl.eff));
 
 			/* Stop when we reach the minimum efficiency. */
 			if (kl.eff >= UMA_MIN_EFF)