diff --git a/wally/suits/io/rrd.cfg b/wally/suits/io/rrd.cfg
index 78e1f0e..42ce09f 100644
--- a/wally/suits/io/rrd.cfg
+++ b/wally/suits/io/rrd.cfg
@@ -2,8 +2,8 @@
 include defaults.cfg
 
 size={TEST_FILE_SIZE}
-ramp_time=5
-runtime=40
+ramp_time=0
+runtime=5
 
 # ---------------------------------------------------------------------
 [rws_{TEST_SUMM}]