diff --git a/tests/zfs-tests/include/libtest.shlib b/tests/zfs-tests/include/libtest.shlib
index 89c6382ded..d686f27232 100644
--- a/tests/zfs-tests/include/libtest.shlib
+++ b/tests/zfs-tests/include/libtest.shlib
@@ -4268,7 +4268,7 @@ function arcstat_quiescence # stat echo
 
 	while $do_once || [ $stat1 -ne $stat2 ] || [ $stat2 -eq 0 ]; do
 		typeset stat1=$(get_arcstat $stat)
-		sleep 2
+		sleep 0.5
 		typeset stat2=$(get_arcstat $stat)
 		do_once=false
 	done