From: Sitsofe Wheeler Date: Fri, 23 Jun 2017 23:17:03 +0000 (+0100) Subject: HOWTO: Reword Log File Formats and add reference X-Git-Tag: fio-2.99~33 X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=6fc820956c033fcb097d88760bb6124938779668 HOWTO: Reword Log File Formats and add reference - Add reference to Log File Formats in log_avg_msec - Reword Log File Formats for improved clarity. - In Log File Formats note that IOPS will always be 1 when using the default of individual I/O logging. Signed-off-by: Sitsofe Wheeler --- diff --git a/HOWTO b/HOWTO index b1904d44..09ac5cee 100644 --- a/HOWTO +++ b/HOWTO @@ -2701,6 +2701,7 @@ Measurements and reporting very large size. Setting this option makes fio average the each log entry over the specified period of time, reducing the resolution of the log. See :option:`log_max_value` as well. Defaults to 0, logging all entries. + Also see `Log File Formats`_. .. option:: log_hist_msec=int @@ -3480,13 +3481,12 @@ The *offset* is the offset, in bytes, from the start of the file, for that particular I/O. The logging of the offset can be toggled with :option:`log_offset`. -If windowed logging is enabled through :option:`log_avg_msec` then fio doesn't -log individual I/Os. Instead of logs the average values over the specified period -of time. Since 'data direction' and 'offset' are per-I/O values, they aren't -applicable if windowed logging is enabled. If windowed logging is enabled and -:option:`log_max_value` is set, then fio logs maximum values in that window -instead of averages. - +Fio defaults to logging every individual I/O. When IOPS are logged for individual +I/Os the value entry will always be 1. If windowed logging is enabled through +:option:`log_avg_msec`, fio logs the average values over the specified period of time. +If windowed logging is enabled and :option:`log_max_value` is set, then fio logs +maximum values in that window instead of averages. Since 'data direction' and +'offset' are per-I/O values, they aren't applicable if windowed logging is enabled. Client/server -------------