a lot of changes
diff --git a/wally/suits/io/lat_vs_iops.cfg b/wally/suits/io/lat_vs_iops.cfg
new file mode 100644
index 0000000..a587a96
--- /dev/null
+++ b/wally/suits/io/lat_vs_iops.cfg
@@ -0,0 +1,29 @@
+[defaults]
+wait_for_previous=1
+filename={FILENAME}
+
+# this is critical for correct results in multy-node run
+randrepeat=0
+
+iodepth=1
+size=100G
+group_reporting=1
+
+IOPS_LIMIT={% 100, 500 %}
+
+ramp_time=5
+runtime=30
+time_based=1
+
+buffered=0
+NUMJOBS=1
+
+# ---------------------------------------------------------------------
+# latency as function from IOPS
+# ---------------------------------------------------------------------
+[lat_vs_iops{rate_iops}_{TEST_SUMM} * {NUM_ROUNDS}]
+blocksize=4k
+rw=randread
+direct=1
+numjobs={NUMJOBS}
+rate_iops={IOPS_LIMIT}