diff --git a/wally/suits/io/rrd.cfg b/wally/suits/io/rrd.cfg
index ca3c613..ae2d960 100644
--- a/wally/suits/io/rrd.cfg
+++ b/wally/suits/io/rrd.cfg
@@ -1,7 +1,7 @@
 [global]
 include defaults_qd.cfg
 ramp_time=0
-runtime=10
+runtime={RUNTIME}
 
 [test_{TEST_SUMM}]
 blocksize=60k
@@ -12,3 +12,23 @@
 iodepth=16
 blocksize=60k
 rw=randread
+
+[test_{TEST_SUMM}]
+blocksize=60k
+rw=randwrite
+iodepth=1
+
+[test_{TEST_SUMM}]
+iodepth=16
+blocksize=60k
+rw=randwrite
+
+[test_{TEST_SUMM}]
+iodepth=1
+blocksize=1m
+rw=write
+
+[test_{TEST_SUMM}]
+iodepth=1
+blocksize=1m
+rw=read