Add terse version output format command line parameter

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index ad4e45402172f04a4563b2974c5e997462b4d30d..724b604b19c1116b87f32cc4b385e36e92dcd445 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -517,6 +517,16 @@ ioengine=str       Defines how the job issues io to the file. The following
                        libaio  Linux native asynchronous io. Note that Linux
                                may only support queued behaviour with
                                non-buffered IO (set direct=1 or buffered=0).
+                               This engine also has a sub-option,
+                               userspace_reap. To set it, use
+                               ioengine=libaio:userspace_reap. Normally, with
+                               the libaio engine in use, fio will use the
+                               io_getevents system call to reap newly returned
+                               events. With this flag turned on, the AIO ring
+                               will be read directly from user-space to reap
+                               events. The reaping mode is only enabled when
+                               polling for a minimum of 0 events (eg when
+                               iodepth_batch_complete=0).
 
                        posixaio glibc posix asynchronous io.
 
@@ -1187,13 +1197,6 @@ uid=int          Instead of running as the invoking user, set the user ID to
 
 gid=int                Set group ID, see uid.
 
-userspace_libaio_reap=bool  Normally, with the libaio engine in use, fio
-               will use the io_getevents system call to reap newly returned
-               events. With this flag turned on, the AIO ring will be read
-               directly from user-space to reap events. The reaping mode is
-               only enabled when polling for a minimum of 0 events (eg when
-               iodepth_batch_complete=0).
-
 6.0 Interpreting the output
 ---------------------------