diff --git a/ceph_bench/definitions.py b/ceph_bench/definitions.py
index ed65581..7fa0de8 100644
--- a/ceph_bench/definitions.py
+++ b/ceph_bench/definitions.py
@@ -5,8 +5,8 @@ SAMPLES = {
     "S": {"size": 1000, "number": 2000},
     "M": {"size": 10000, "number": 500},
     "ML": {"size": 100000, "number": 100},
-    "L": {"size": 1000000, "number": 20},
-    "XL": {"size": 5000000, "number": 5},
+    "L": {"size": 500000, "number": 50},
+    "XL": {"size": 2000000, "number": 20},
 }