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