\fIupper\fR may contain a suffix as described above. If an option allows two
sets of ranges, they are separated with a `,' or `/' character. For example:
`8\-8k/8M\-4G'.
+.TP
+.I float_list
+List of floating numbers: A list of floating numbers, separated by
+a ':' charcater.
.SS "Parameter List"
.TP
.BI name \fR=\fPstr
specify a number of IO's to do before getting a new offset, this is one by
appending a `:\fI<nr>\fR to the end of the string given. For a random read, it
would look like \fBrw=randread:8\fR for passing in an offset modifier with a
-value of 8. See the \fBrw_sequencer\fR option.
+value of 8. If the postfix is used with a sequential IO pattern, then the value
+specified will be added to the generated offset for each IO. For instance,
+using \fBrw=write:4k\fR will skip 4k for every write. It turns sequential IO
+into sequential IO with holes. See the \fBrw_sequencer\fR option.
.RE
.TP
.BI rw_sequencer \fR=\fPstr
See <http://www.xmailserver.org/guasi\-lib.html>.
.TP
.B rdma
-The RDMA I/O engine supports both RDMA memory semantic(RDMA_WRITE/RDMA_READ)
-and channel semantic(Send/Recv) in InfiniBand, RoCE and iWarp environment.
+The RDMA I/O engine supports both RDMA memory semantics (RDMA_WRITE/RDMA_READ)
+and channel semantics (Send/Recv) for the InfiniBand, RoCE and iWARP protocols.
.TP
.B external
Loads an external I/O engine object file. Append the engine filename as
this parameter is given, a new offset will be chosen without looking at past
I/O history. This parameter is mutually exclusive with \fBverify\fR.
.TP
-.B softrandommap \fR=\fPbool
+.BI softrandommap \fR=\fPbool
See \fBnorandommap\fR. If fio runs with the random block map enabled and it
fails to allocate the map, if this option is set it will continue without a
random block map. As coverage will not be as complete as with random maps, this
.TP
.BI gid \fR=\fPint
Set group ID, see \fBuid\fR.
+.TP
+.BI clat_percentiles \fR=\fPbool
+Enable the reporting of percentiles of completion latencies.
+.TP
+.BI percentile_list \fR=\fPfloat_list
+Overwrite the default list of percentiles for completion
+latencies. Each number is a floating number in the range (0,100], and
+the maximum length of the list is 20. Use ':' to separate the
+numbers. For example, --percentile_list=99.5:99.9 will cause fio to
+report the values of completion latency below which 99.5% and 99.9% of
+the observed latencies fell, respectively.
.SH OUTPUT
While running, \fBfio\fR will display the status of the created jobs. For
example: