fix tasks
diff --git a/wally/suits/io/vm_count_ec2.cfg b/wally/suits/io/vm_count_ec2.cfg
index c132039..c6fc56c 100644
--- a/wally/suits/io/vm_count_ec2.cfg
+++ b/wally/suits/io/vm_count_ec2.cfg
@@ -1,30 +1,37 @@
[defaults]
-NUM_ROUNDS=7
-ramp_time=5
buffered=0
-wait_for_previous
+wait_for_previous=1
filename={FILENAME}
iodepth=1
size=10G
-time_based
+
+# this is critical for correct results in multy-node run
+randrepeat=0
+
+time_based=1
+ramp_time=5
runtime=30
-group_reporting
-rate={BW_LIMIT}
-rate_iops={IOPS_LIMIT}
-NUMJOBS={% 1, 2, 5, 10, 15, 20, 25, 30, 35, 40 %}
+
+group_reporting=1
+BW_LIMIT=60m
+IOPS_LIMIT=100
+
+NUMJOBS=1
+NUM_ROUNDS=7
# ---------------------------------------------------------------------
# check different thread count. (latency, bw) = func(th_count)
# ---------------------------------------------------------------------
[vm_count_{TEST_SUMM} * {NUM_ROUNDS}]
-blocksize={% 4k, 1m %}
+blocksize=16m
rw={% randwrite, randread %}
direct=1
numjobs={NUMJOBS}
+rate={BW_LIMIT}
[vm_count_{TEST_SUMM} * {NUM_ROUNDS}]
-blocksize={% 4k, 1m %}
-rw=randwrite
-direct=0
-sync=1
+blocksize=4k
+rw={% randwrite,randread %}
+direct=1
numjobs={NUMJOBS}
+rate_iops={IOPS_LIMIT}