X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=a8d5197cd58d9b4af4836a2eda1368a1cff28366;hp=11ade8c1a500440f27d1774257ef0c9754020877;hb=065248bfdd0f48aaf67f41055ec5185434acbafa;hpb=312b4af22018a73a445ae6ecf640d71f12120ab9

diff --git a/HOWTO b/HOWTO
index 11ade8c1..a8d5197c 100644
--- a/HOWTO
+++ b/HOWTO
@@ -1365,22 +1365,39 @@ Split up, the format is as follows:
 		Total IO (KB), bandwidth (KB/sec), IOPS, runtime (msec)
 		Submission latency: min, max, mean, deviation
 		Completion latency: min, max, mean, deviation
+		Completion latency percentiles: 20 fields (see below)
 		Total latency: min, max, mean, deviation
 		Bw: min, max, aggregate percentage of total, mean, deviation
 	WRITE status:
 		Total IO (KB), bandwidth (KB/sec), IOPS, runtime (msec)
 		Submission latency: min, max, mean, deviation
 		Completion latency: min, max, mean, deviation
+		Completion latency percentiles: 20 fields (see below)
 		Total latency: min, max, mean, deviation
 		Bw: min, max, aggregate percentage of total, mean, deviation
 	CPU usage: user, system, context switches, major faults, minor faults
 	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
 
+Completion latency percentiles can be a grouping of up to 20 sets, so
+for the terse output fio writes all of them. Each field will look like this:
+
+	1.00%=6112
+
+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
 ---------------------