X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=HOWTO;h=2a70b7c629b6d6470625ac98e02dad555571f1ed;hb=07dff7d1d614b33e3a6d3e3ade38ce648b53a632;hp=6ecc0a6b2351c1df9ee4def47d2a3989dcb0c54d;hpb=f50fbdda6a422d5e486f8f1a83c76909dabfb9cd;p=fio.git

diff --git a/HOWTO b/HOWTO
index 6ecc0a6b..2a70b7c6 100644
--- a/HOWTO
+++ b/HOWTO
@@ -111,9 +111,6 @@ Command line options
 	format.  `json+` is like `json`, except it adds a full dump of the latency
 	buckets.
 
-.. option:: --runtime
-	Limit run time to runtime seconds.
-
 .. option:: --bandwidth-log
 
 	Generate aggregate bandwidth logs.
@@ -505,19 +502,19 @@ Parameter types
 	prefixes.  To specify power-of-10 decimal values defined in the
 	International System of Units (SI):
 
-		* *Ki* -- means kilo (K) or 1000
-		* *Mi* -- means mega (M) or 1000**2
-		* *Gi* -- means giga (G) or 1000**3
-		* *Ti* -- means tera (T) or 1000**4
-		* *Pi* -- means peta (P) or 1000**5
+		* *K* -- means kilo (K) or 1000
+		* *M* -- means mega (M) or 1000**2
+		* *G* -- means giga (G) or 1000**3
+		* *T* -- means tera (T) or 1000**4
+		* *P* -- means peta (P) or 1000**5
 
 	To specify power-of-2 binary values defined in IEC 80000-13:
 
-		* *K* -- means kibi (Ki) or 1024
-		* *M* -- means mebi (Mi) or 1024**2
-		* *G* -- means gibi (Gi) or 1024**3
-		* *T* -- means tebi (Ti) or 1024**4
-		* *P* -- means pebi (Pi) or 1024**5
+		* *Ki* -- means kibi (Ki) or 1024
+		* *Mi* -- means mebi (Mi) or 1024**2
+		* *Gi* -- means gibi (Gi) or 1024**3
+		* *Ti* -- means tebi (Ti) or 1024**4
+		* *Pi* -- means pebi (Pi) or 1024**5
 
 	With :option:`kb_base`\=1024 (the default), the unit prefixes are opposite
 	from those specified in the SI and IEC 80000-13 standards to provide
@@ -950,7 +947,7 @@ I/O type
 .. option:: direct=bool
 
 	If value is true, use non-buffered I/O. This is usually O_DIRECT. Note that
-	ZFS on Solaris doesn't support direct I/O.  On Windows the synchronous
+	OpenBSD and ZFS on Solaris don't support direct I/O.  On Windows the synchronous
 	ioengines don't support direct I/O.  Default: false.
 
 .. option:: atomic=bool
@@ -1794,7 +1791,9 @@ I/O engine
 		**external**
 			Prefix to specify loading an external I/O engine object file. Append
 			the engine filename, e.g. ``ioengine=external:/tmp/foo.o`` to load
-			ioengine :file:`foo.o` in :file:`/tmp`.
+			ioengine :file:`foo.o` in :file:`/tmp`. The path can be either
+			absolute or relative. See :file:`engines/skeleton_external.c` for
+			details of writing an external I/O engine.
 
 
 I/O engine specific parameters
@@ -3584,7 +3583,7 @@ and IOPS. The logs share a common format, which looks like this:
 on the type of log, it will be one of the following:
 
     **Latency log**
-		Value is latency in usecs
+		Value is latency in nsecs
     **Bandwidth log**
 		Value is in KiB/sec
     **IOPS log**