--- /dev/null
+[fixed-rate-submit]
+size=128m
+rw=read
+ioengine=libaio
+iodepth=32
+direct=1
+# by setting the submit mode to offload, we can guarantee a fixed rate of
+# submission regardless of what the device completion rate is.
+io_submit_mode=offload
+rate_iops=1000