Let fadvise_hint also apply too mmap engine and madvise

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 4caaf542e0e4b89f4156309469e476700f4b372f..307b50d47c85762f07d82e2e8e332cf5c77f1fb6 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -173,7 +173,16 @@ Command line options
 .. option:: --eta=when
 
        Specifies when real-time ETA estimate should be printed.  `when` may be
-       `always`, `never` or `auto`.
+       `always`, `never` or `auto`. `auto` is the default, it prints ETA
+       when requested if the output is a TTY. `always` disregards the output
+       type, and prints ETA when requested. `never` never prints ETA.
+
+.. option:: --eta-interval=time
+
+       By default, fio requests client ETA status roughly every second. With
+       this option, the interval is configurable. Fio imposes a minimum
+       allowed time to avoid flooding the console, less than 250 msec is
+       not supported.
 
 .. option:: --eta-newline=time
 
@@ -1084,8 +1093,9 @@ I/O type
 
 .. option:: fadvise_hint=str
 
-       Use :manpage:`posix_fadvise(2)` to advise the kernel on what I/O patterns
-       are likely to be issued.  Accepted values are:
+       Use :manpage:`posix_fadvise(2)` or :manpage:`posix_fadvise(2)` to
+       advise the kernel on what I/O patterns are likely to be issued.
+       Accepted values are:
 
                **0**
                        Backwards-compatible hint for "no hint".
@@ -2208,6 +2218,13 @@ I/O rate
        (https://en.wikipedia.org/wiki/Poisson_point_process). The lambda will be
        10^6 / IOPS for the given workload.
 
+.. option:: rate_ignore_thinktime=bool
+
+       By default, fio will attempt to catch up to the specified rate setting,
+       if any kind of thinktime setting was used. If this option is set, then
+       fio will ignore the thinktime and continue doing IO at the specified
+       rate, instead of entering a catch-up mode after thinktime is done.
+
 
 I/O latency
 ~~~~~~~~~~~