From 3e006cf9a38e432f1559b2d835a940981647991c Mon Sep 17 00:00:00 2001
From: Song Liu <songliubraving@fb.com>
Date: Mon, 9 Nov 2015 14:32:13 -0800
Subject: [PATCH] add example using --rate_poisson

Signed-off-by: Jens Axboe <axboe@fb.com>
---
 examples/poisson-rate-submission.fio | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 examples/poisson-rate-submission.fio

diff --git a/examples/poisson-rate-submission.fio b/examples/poisson-rate-submission.fio
new file mode 100644
index 00000000..6a94df8a
--- /dev/null
+++ b/examples/poisson-rate-submission.fio
@@ -0,0 +1,14 @@
+[poisson-rate-submit]
+size=128m
+rw=randread
+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=50
+# Real world random request flow follows Poisson process. To give better
+# insight on latency distribution, we simulate request flow under Poisson
+# process.
+rate_poisson=1
\ No newline at end of file
-- 
2.25.1