X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=88d10a171da9e373ee40e5844b2b1690c6b3db28;hp=6e052f532a0963c0d3710bb626f59696d60e2f9b;hb=8348daf915d4b2c3ec95a16ad803e9e42eb2bfda;hpb=23a8e176c3725f3640eaaf31a0a4c7497366c40f

diff --git a/HOWTO b/HOWTO
index 6e052f53..88d10a17 100644
--- a/HOWTO
+++ b/HOWTO
@@ -798,6 +798,9 @@ ioengine=str	Defines how the job issues io to the file. The following
 				overwriting. The writetrim mode works well
 				for this constraint.
 
+			pmemblk	Read and write through the NVML libpmemblk
+				interface.
+
 			external Prefix to specify loading an external
 				IO engine object file. Append the engine
 				filename, eg ioengine=external:/tmp/foo.o
@@ -1263,10 +1266,14 @@ exitall_on_error	When one job finishes in error, terminate the rest. The
 		default is to wait for each job to finish.
 
 bwavgtime=int	Average the calculated bandwidth over the given time. Value
-		is specified in milliseconds.
+		is specified in milliseconds. If the job also does bandwidth
+		logging through 'write_bw_log', then the minimum of this option
+		and 'log_avg_msec' will be used.  Default: 500ms.
 
 iopsavgtime=int	Average the calculated IOPS over the given time. Value
-		is specified in milliseconds.
+		is specified in milliseconds. If the job also does IOPS logging
+		through 'write_iops_log', then the minimum of this option and
+		'log_avg_msec' will be used.  Default: 500ms.
 
 create_serialize=bool	If true, serialize the file creating for the jobs.
 			This may be handy to avoid interleaving of data
@@ -1596,12 +1603,13 @@ log_avg_msec=int By default, fio will log an entry in the iops, latency,
 		disk log, that can quickly grow to a very large size. Setting
 		this option makes fio average the each log entry over the
 		specified period of time, reducing the resolution of the log.
-		See log_max as well. Defaults to 0, logging all entries.
+		See log_max_value as well. Defaults to 0, logging all entries.
+
+log_max_value=bool	If log_avg_msec is set, fio logs the average over that
+		window. If you instead want to log the maximum value, set this
+		option to 1. Defaults to 0, meaning that averaged values are
+		logged.
 
-log_max=bool	If log_avg_msec is set, fio logs the average over that window.
-		If you instead want to log the maximum value, set this option
-		to 1. Defaults to 0, meaning that averaged values are logged.
-.
 log_offset=int	If this is set, the iolog options will include the byte
 		offset for the IO entry as well as the other data values.
 
@@ -1887,6 +1895,15 @@ be the starting port number since fio will use a range of ports.
 		1 	  : allocate space immidietly inside defragment event,
 			    and free right after event
 
+[rbd] clustername=str	Specifies the name of the Ceph cluster.
+[rbd] rbdname=str	Specifies the name of the RBD.
+[rbd] pool=str		Specifies the naem of the Ceph pool containing RBD.
+[rbd] clientname=str	Specifies the username (without the 'client.' prefix)
+			used to access the Ceph cluster. If the clustername is
+			specified, the clientmae shall be the full type.id
+			string. If no type. prefix is given, fio will add
+			'client.' by default.
+
 [mtd] skip_bad=bool	Skip operations against known bad blocks.
 
 [libhdfs] hdfsdirectory	libhdfs will create chunk in this HDFS directory