In fio.1 and HOWTO, add link to Poisson process in wikipedia

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 81217b77906a6956d1e6bd8ebd70c2986dbb6348..f8b488faac91285682cb9a9027b9ddaa7ecc804a 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1064,6 +1064,12 @@ rate_iops_min=int If fio doesn't meet this rate of IO, it will cause
                the job to exit. The same format as rate is used for read vs
                write separation.
 
+rate_poisson=bool      Real world random request flow follows Poisson process
+               (https://en.wikipedia.org/wiki/Poisson_process). With
+               rate_poisson=1, fio tries to simulate request flow under Poisson
+               process (instead of even distribution, which is the default).
+               Default: false.
+
 latency_target=int     If set, fio will attempt to find the max performance
                point that the given workload will run at while maintaining a
                latency below this target. The values is given in microseconds.