X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=acb9e97fc35bf6ca790d45bb93b7be0260509a8f;hp=307b50d47c85762f07d82e2e8e332cf5c77f1fb6;hb=69b98f11d62cb12482130fac79b8ebf00c0bb139;hpb=c712c97ab8714165216c5940b4a540bd42fdbd68

diff --git a/HOWTO b/HOWTO
index 307b50d4..acb9e97f 100644
--- a/HOWTO
+++ b/HOWTO
@@ -672,7 +672,7 @@ Time related parameters
 	Tell fio to terminate processing after the specified period of time.  It
 	can be quite hard to determine for how long a specified job will run, so
 	this parameter is handy to cap the total runtime to a given time.  When
-	the unit is omitted, the value is intepreted in seconds.
+	the unit is omitted, the value is interpreted in seconds.
 
 .. option:: time_based
 
@@ -1775,7 +1775,7 @@ I/O engine
 			at least one non-cpuio job.
 
 		**guasi**
-			The GUASI I/O engine is the Generic Userspace Asyncronous Syscall
+			The GUASI I/O engine is the Generic Userspace Asynchronous Syscall
 			Interface approach to async I/O. See
 
 			http://www.xmailserver.org/guasi-lib.html
@@ -1810,6 +1810,11 @@ I/O engine
 			I/O engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate
 			defragment activity in request to DDIR_WRITE event.
 
+		**rados**
+			I/O engine supporting direct access to Ceph Reliable Autonomic
+			Distributed Object Store (RADOS) via librados. This ioengine
+			defines engine specific options.
+
 		**rbd**
 			I/O engine supporting direct access to Ceph Rados Block Devices
 			(RBD) via librbd without the need to use the kernel rbd driver. This
@@ -2011,7 +2016,7 @@ with the caveat that when used on the command line, they must come after the
 		Allocate space immediately inside defragment event, and free right
 		after event.
 
-.. option:: clustername=str : [rbd]
+.. option:: clustername=str : [rbd,rados]
 
 	Specifies the name of the Ceph cluster.
 
@@ -2019,17 +2024,22 @@ with the caveat that when used on the command line, they must come after the
 
 	Specifies the name of the RBD.
 
-.. option:: pool=str : [rbd]
+.. option:: pool=str : [rbd,rados]
 
-	Specifies the name of the Ceph pool containing RBD.
+	Specifies the name of the Ceph pool containing RBD or RADOS data.
 
-.. option:: clientname=str : [rbd]
+.. option:: clientname=str : [rbd,rados]
 
 	Specifies the username (without the 'client.' prefix) used to access the
 	Ceph cluster. If the *clustername* is specified, the *clientname* shall be
 	the full *type.id* string. If no type. prefix is given, fio will add
 	'client.' by default.
 
+.. option:: busy_poll=bool : [rbd,rados]
+
+        Poll store instead of waiting for completion. Usually this provides better
+        throughput at cost of higher(up to 100%) CPU utilization.
+
 .. option:: skip_bad=bool : [mtd]
 
 	Skip operations against known bad blocks.
@@ -2403,7 +2413,7 @@ Threads, processes and job synchronization
 
 		<mode>[:<nodelist>]
 
-	``mode`` is one of the following memory poicies: ``default``, ``prefer``,
+	``mode`` is one of the following memory policies: ``default``, ``prefer``,
 	``bind``, ``interleave`` or ``local``. For ``default`` and ``local`` memory
 	policies, no node needs to be specified.  For ``prefer``, only one node is
 	allowed.  For ``bind`` and ``interleave`` the ``nodelist`` may be as
@@ -2527,7 +2537,7 @@ Verification
 			each block. This will automatically use hardware acceleration
 			(e.g. SSE4.2 on an x86 or CRC crypto extensions on ARM64) but will
 			fall back to software crc32c if none is found. Generally the
-			fatest checksum fio supports when hardware accelerated.
+			fastest checksum fio supports when hardware accelerated.
 
 		**crc32c-intel**
 			Synonym for crc32c.