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

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index 99d9f9e07e63a7ccb2c6462bef9e70843ebc82a0..b8e31db691842695567d7e058733d6051c91384f 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -964,8 +964,10 @@ If this rate of I/O is not met, the job will exit. The same format as \fBrate\fR
 is used for read vs write separation.
 .TP
 .BI rate_poisson \fR=\fPbool
-When rate limited, try to simulate request flow under Poisson process (instead
-of even distribution). Default: false.
+Real world random request flow follows Poisson process
+(https://en.wikipedia.org/wiki/Poisson_process). With \fBrate_poisson\fR=1, fio
+tries to simulate request flow under Poisson process (instead of even
+distribution, which is the default). Default: false.
 .TP
 .BI ratecycle \fR=\fPint
 Average bandwidth for \fBrate\fR and \fBratemin\fR over this number of