fio: allow milliseconds on all time specifiers

[fio.git] / fio.1

diff --git a/fio.1 b/fio.1
index ec103776afc274d4467e322904a9ad0f23f11f89..a16d0398b2bc4c59a583dd805cacf6ba40b5aa03 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -121,12 +121,16 @@ String: a sequence of alphanumeric characters.
 SI integer: a whole number, possibly containing a suffix denoting the base unit
 of the value.  Accepted suffixes are `k', 'M', 'G', 'T', and 'P', denoting
 kilo (1024), mega (1024^2), giga (1024^3), tera (1024^4), and peta (1024^5)
-respectively. The suffix is not case sensitive. If prefixed with '0x', the
-value is assumed to be base 16 (hexadecimal). A suffix may include a trailing 'b',
-for instance 'kb' is identical to 'k'. You can specify a base 10 value
-by using 'KiB', 'MiB', 'GiB', etc. This is useful for disk drives where
-values are often given in base 10 values. Specifying '30GiB' will get you
-30*1000^3 bytes.
+respectively. If prefixed with '0x', the value is assumed to be base 16
+(hexadecimal). A suffix may include a trailing 'b', for instance 'kb' is
+identical to 'k'. You can specify a base 10 value by using 'KiB', 'MiB','GiB',
+etc. This is useful for disk drives where values are often given in base 10
+values. Specifying '30GiB' will get you 30*1000^3 bytes.
+When specifying times the default suffix meaning changes, still denoting the
+base unit of the value, but accepted suffixes are 'D' (days), 'H' (hours), 'M'
+(minutes), 'S' Seconds, 'ms' milli seconds. Time values without a unit specify
+seconds.
+The suffixes are not case sensitive.
 .TP
 .I bool
 Boolean: a true or false value. `0' denotes false, `1' denotes true.
@@ -293,8 +297,12 @@ read, write, and trim are accounted and reported separately. If this option is
 set, the fio will sum the results and report them as "mixed" instead.
 .TP
 .BI randrepeat \fR=\fPbool
-Seed the random number generator in a predictable way so results are repeatable
-across runs.  Default: true.
+Seed the random number generator used for random I/O patterns in a predictable
+way so the pattern is repeatable across runs.  Default: true.
+.TP
+.BI allrandrepeat \fR=\fPbool
+Seed all random number generators in a predictable way so results are
+repeatable across runs.  Default: false.
 .TP
 .BI randseed \fR=\fPint
 Seed the random number generators based on this seed value, to be able to
@@ -557,6 +565,11 @@ transfer as fio ioengine
 .B e4defrag
 IO engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate defragment activity
 request to DDIR_WRITE event
+.TP
+.B rbd
+IO engine supporting direct access to Ceph Rados Block Devices (RBD) via librbd 
+without the need to use the kernel rbd driver. This ioengine defines engine specific 
+options.
 .RE
 .P
 .RE
@@ -1394,6 +1407,15 @@ Preallocate donor's file on init
 .BI 1:
 allocate space immediately inside defragment event, and free right after event
 .RE
+.TP
+.BI (rbd)rbdname \fR=\fPstr
+Specifies the name of the RBD.
+.TP
+.BI (rbd)pool \fR=\fPstr
+Specifies the name of the Ceph pool containing the RBD.
+.TP
+.BI (rbd)clientname \fR=\fPstr
+Specifies the username (without the 'client.' prefix) used to access the Ceph cluster.
 .SH OUTPUT
 While running, \fBfio\fR will display the status of the created jobs.  For
 example: