diff --git a/wally/suits/io/rrd.cfg b/wally/suits/io/rrd.cfg
index d5a92bb..3383dce 100644
--- a/wally/suits/io/rrd.cfg
+++ b/wally/suits/io/rrd.cfg
@@ -1,16 +1,14 @@
 [global]
 include defaults.cfg
 
-size={TEST_FILE_SIZE}
-
 # ---------------------------------------------------------------------
 [rws_{TEST_SUMM}]
 blocksize=4k
 rw=randwrite
 sync=1
-ramp_time=10
-runtime=60
-numjobs={% 20,40,60,80,100,120,140 %}
+ramp_time=15
+runtime=120
+numjobs={% 50,150 %}
 
 # ---------------------------------------------------------------------
 # [rws_{TEST_SUMM}]