Add disk utilization to terse format output

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index a0d244bc6daf3d92f8c4786f27a055761ae59906..a8d5197cd58d9b4af4836a2eda1368a1cff28366 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1379,6 +1379,11 @@ Split up, the format is as follows:
        IO depths: <=1, 2, 4, 8, 16, 32, >=64
        IO latencies microseconds: <=2, 4, 10, 20, 50, 100, 250, 500, 750, 1000
        IO latencies milliseconds: <=2, 4, 10, 20, 50, 100, 250, 500, 750, 1000, 2000, >=2000
+       Disk utilization: Disk name, Read ios, write ios,
+                         Read merges, write merges,
+                         Read ticks, write ticks,
+                         Read in-queue time, write in-queue time,
+                         Disk utilization percentage
        Additional Info (dependant on continue_on_error, default off): total # errors, first error code 
        
        Additional Info (dependant on description being set): Text description
@@ -1390,6 +1395,9 @@ for the terse output fio writes all of them. Each field will look like this:
 
 which is the Xth percentile, and the usec latency associated with it.
 
+For disk utilization, all disks used by fio are shown. So for each disk
+there will be a disk utilization section.
+
 
 8.0 Trace file format
 ---------------------