X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=HOWTO;h=ef8f9599942bd08e63a96c8f32a24c6f176892e7;hb=61d2407131bc52eb80a0cebc8b974c197034b402;hp=2e4cdbdf146e17394a8ebcd481097e43846131ba;hpb=0fd666bf0d5fc373f28b1b43d1df817f8ec89605;p=fio.git

diff --git a/HOWTO b/HOWTO
index 2e4cdbdf..ef8f9599 100644
--- a/HOWTO
+++ b/HOWTO
@@ -1360,27 +1360,43 @@ signify that change.
 
 Split up, the format is as follows:
 
-	version, jobname, groupid, error
+	terse version, fio version, jobname, groupid, error
 	READ status:
-		Total IO (KB), bandwidth (KB/sec), runtime (msec)
+		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), runtime (msec)
+		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,
+			  Time spent in queue, 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
 ---------------------