[PATCH] Update irange documentation

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 57c0730b13d0ef7ef8b257a97ff56c1181aa53cf..4370c9f3607ff7fdc1b72f380dcc9eb3bf3662a3 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -179,7 +179,10 @@ siint      SI integer. A whole number value, which may contain a postfix
 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
 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

-       as 1024-4096. Also see siint.
+       as 1024-4096. A colon may also be used as the seperator, eg
+       1k:4k. If the option allows two sets of ranges, they can be
+       specified with a ',' or '/' delimiter: 1k-4k/8k-32k. Also see
+       siint.

 
 With the above in mind, here follows the complete list of fio job
 parameters.
 
 With the above in mind, here follows the complete list of fio job
 parameters.


@@ -277,7 +280,10 @@ iodepth=int        This defines how many io units to keep in flight against
                concurrency.
 
 direct=bool    If value is true, use non-buffered io. This is usually
                concurrency.
 
 direct=bool    If value is true, use non-buffered io. This is usually

-               O_DIRECT. Defaults to true.
+               O_DIRECT.
+
+buffered=bool  If value is true, use buffered io. This is the opposite
+               of the 'direct' option. Defaults to true.

 
 offset=siint   Start io at the given offset in the file. The data before
                the given offset will not be touched. This effectively
 
 offset=siint   Start io at the given offset in the file. The data before
                the given offset will not be touched. This effectively


@@ -529,9 +535,9 @@ direction, the output looks like:
 
 Client1 (g=0): err= 0:
   write: io=    32MiB, bw=   666KiB/s, runt= 50320msec
 
 Client1 (g=0): err= 0:
   write: io=    32MiB, bw=   666KiB/s, runt= 50320msec

-    slat (msec): min=    0, max=  136, avg= 0.03, dev= 1.92
-    clat (msec): min=    0, max=  631, avg=48.50, dev=86.82
-    bw (KiB/s) : min=    0, max= 1196, per=51.00%, avg=664.02, dev=681.68
+    slat (msec): min=    0, max=  136, avg= 0.03, stdev= 1.92
+    clat (msec): min=    0, max=  631, avg=48.50, stdev=86.82
+    bw (KiB/s) : min=    0, max= 1196, per=51.00%, avg=664.02, stdev=681.68

   cpu        : usr=1.49%, sys=0.25%, ctx=7969
 
 The client number is printed, along with the group id and error of that
   cpu        : usr=1.49%, sys=0.25%, ctx=7969
 
 The client number is printed, along with the group id and error of that