X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=460b456ce44b312a016346a62c30a7a8093bb86b;hp=a2070d666ce78dc28506f68386a451152ce4b32d;hb=15506d09caa78df3e36a6bab05cdf12092f2d507;hpb=9c60ce649d3f976d196709d4399bb7c540ce97b5

diff --git a/HOWTO b/HOWTO
index a2070d66..460b456c 100644
--- a/HOWTO
+++ b/HOWTO
@@ -176,6 +176,8 @@ siint	SI integer. A whole number value, which may contain a postfix
 	meaning kilo, mega, and giga. So if you want to specify 4096,
 	you could either write out '4096' or just give 4k. The postfixes
 	signify base 2 values, so 1024 is 1k and 1024k is 1m and so on.
+	If the option accepts an upper and lower range, use a colon ':'
+	or minus '-' to seperate such values. See irange.
 bool	Boolean. Usually parsed as an integer, however only defined for
 	true and false (1 and 0).
 irange	Integer range with postfix. Allows value range to be given, such
@@ -214,6 +216,7 @@ filename=str	Fio normally makes up a filename based on the job name,
 opendir=str	Tell fio to recursively add any file it can find in this
 		directory and down the file system tree.
 
+readwrite=str
 rw=str		Type of io pattern. Accepted values are:
 
 			read		Sequential reads
@@ -242,6 +245,7 @@ filesize=siint	Individual file sizes. May be a range, in which case fio
 		and limited to 'size' in total (if that is given). If not
 		given, each created file is the same size.
 
+blocksize=siint
 bs=siint	The block size used for the io units. Defaults to 4k. Values
 		can be given for both read and writes. If a single siint is
 		given, it will apply to both. If a second siint is specified
@@ -252,6 +256,7 @@ bs=siint	The block size used for the io units. Defaults to 4k. Values
 		can do so by passing an empty read size - bs=,8k will set
 		8k for writes and leave the read default value.
 
+blocksize_range=irange
 bsrange=irange	Instead of giving a single block size, specify a range
 		and fio will mix the issued io block sizes. The issued
 		io unit will always be a multiple of the minimum value
@@ -259,6 +264,7 @@ bsrange=irange	Instead of giving a single block size, specify a range
 		writes, however a second range can be given after a comma.
 		See bs=.
 
+blocksize_unaligned
 bs_unaligned	If this option is given, any byte size value within bsrange
 		may be used as a block range. This typically wont work with
 		direct IO, as that normally requires sector alignment.
@@ -416,7 +422,16 @@ thinktime_blocks
 rate=int	Cap the bandwidth used by this job to this number of KiB/sec.
 
 ratemin=int	Tell fio to do whatever it can to maintain at least this
-		bandwidth.
+		bandwidth. Failing to meet this requirement, will cause
+		the job to exit.
+
+rate_iops=int	Cap the bandwidth to this number of IOPS. Basically the same
+		as rate, just specified independently of bandwidth. If the
+		job is given a block size range instead of a fixed value,
+		the smallest block size is used as the metric.
+
+rate_iops_min=int If fio doesn't meet this rate of IO, it will cause
+		the job to exit.
 
 ratecycle=int	Average bandwidth for 'rate' and 'ratemin' over this number
 		of milliseconds.
@@ -441,6 +456,7 @@ invalidate=bool	Invalidate the buffer/page cache parts for this file prior
 sync=bool	Use sync io for buffered writes. For the majority of the
 		io engines, this means using O_SYNC.
 
+iomem=str
 mem=str		Fio can use various types of memory as the io unit buffer.
 		The allowed values are: