diff --git a/wally/suits/io/fio.py b/wally/suits/io/fio.py
index 5945ab7..a3f0fe3 100644
--- a/wally/suits/io/fio.py
+++ b/wally/suits/io/fio.py
@@ -745,8 +745,8 @@
 
                     time.sleep(self.retry_time)
 
-                    wait(pool.submit(reconnect, node.connection, node.conn_url)
-                         for node in self.config.nodes)
+                    wait([pool.submit(reconnect, node.connection, node.conn_url)
+                             for node in self.config.nodes])
 
                 fname = "{0}_task.fio".format(pos)
                 with open(os.path.join(self.config.log_directory, fname), "w") as fd:
diff --git a/wally/suits/io/rrd.cfg b/wally/suits/io/rrd.cfg
index d6c04a0..131688f 100644
--- a/wally/suits/io/rrd.cfg
+++ b/wally/suits/io/rrd.cfg
@@ -1,12 +1,18 @@
-[global]
-include defaults.cfg
+[test]
+buffered=0
+group_reporting=1
+iodepth=16
+unified_rw_reporting=1
+norandommap=1
+thread=1
+time_based=1
+wait_for_previous=1
+filename=/dev/rbd1
+size=4G
 ramp_time=15
 runtime=3600
-numjobs=60
+numjobs=30
 direct=1
-
-# ---------------------------------------------------------------------
-[test_{TEST_SUMM}]
 blocksize=60k
 rw=randwrite
-sync=1
+direct=1
diff --git a/wally/suits/io/test.cfg b/wally/suits/io/test.cfg
index 296da06..2977d1a 100644
--- a/wally/suits/io/test.cfg
+++ b/wally/suits/io/test.cfg
@@ -1,20 +1,19 @@
 [test1]
+ioengine=libaio
 buffered=0
 group_reporting=1
-iodepth=1
+iodepth=16
 unified_rw_reporting=1
 norandommap=1
 thread=1
 time_based=1
 wait_for_previous=1
-# this is critical for correct results in multy-node run
 randrepeat=0
 filename=/dev/rbd1
-size=10G
+size=4G
 ramp_time=10
-runtime=30
-numjobs=160
-sync=1
+runtime=300
+numjobs=16
 direct=1
 blocksize=60k
 rw=randwrite