Merge branch 'fio_pr_alternate_epoch' of https://github.com/PCPartPicker/fio

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 216ea185b16d4120fe55a0059bfdc2a71649087b..74ba7216e132c358309ffd0961c2cb73ea7494be 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -3681,6 +3681,19 @@ Measurements and reporting
        write_type_log for each log type, instead of the default zero-based
        timestamps.
 
+.. option:: log_alternate_epoch=bool
+
+       If set, fio will log timestamps based on the epoch used by the clock specified
+       in the log_alternate_epoch_clock_id option, to the log files produced by
+       enabling write_type_log for each log type, instead of the default zero-based
+       timestamps.
+
+.. option:: log_alternate_epoch_clock_id=int
+
+       Specifies the clock_id to be used by clock_gettime to obtain the alternate epoch
+       if either log_unix_epoch or log_alternate_epoch are true. Otherwise has no
+       effect. Default value is 0, or CLOCK_REALTIME.
+
 .. option:: block_error_percentiles=bool
 
        If set, record errors in trim block-sized units from writes and trims and