diff --git a/wally/suits/io/rrd.cfg b/wally/suits/io/rrd.cfg
index 4cf9ca9..d5a92bb 100644
--- a/wally/suits/io/rrd.cfg
+++ b/wally/suits/io/rrd.cfg
@@ -8,9 +8,9 @@
 blocksize=4k
 rw=randwrite
 sync=1
-ramp_time=0
+ramp_time=10
 runtime=60
-numjobs=50
+numjobs={% 20,40,60,80,100,120,140 %}
 
 # ---------------------------------------------------------------------
 # [rws_{TEST_SUMM}]