Add support for doing total latency percentiles

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 2a70b7c629b6d6470625ac98e02dad555571f1ed..bfaa054a5de0e84e1d914d2b2375c041c00eb57b 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -2860,7 +2860,15 @@ Measurements and reporting
 
 .. option:: clat_percentiles=bool
 
-       Enable the reporting of percentiles of completion latencies.
+       Enable the reporting of percentiles of completion latencies.  This
+       option is mutually exclusive with :option:`lat_percentiles`.
+
+.. option:: lat_percentiles=bool
+
+       Enable the reporting of percentiles of IO latencies. This is similar
+       to :option:`clat_percentiles`, except that this includes the
+       submission latency. This option is mutually exclusive with
+       :option:`clat_percentiles`.
 
 .. option:: percentile_list=float_list