.\" Copyright 2016 Nexenta Systems, Inc.
.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved.
.\" Copyright (c) 2017 Datto Inc.
-.\" Copyright (c) 2017 George Melikov. All Rights Reserved.
+.\" Copyright (c) 2018 George Melikov. All Rights Reserved.
.\" Copyright (c) 2017 Datto Inc.
.\"
-.Dd June 28, 2017
+.Dd April 27, 2018
.Dt ZPOOL 8 SMM
.Os Linux
.Sh NAME
Verbose statistics Reports usage statistics for individual vdevs within the
pool, in addition to the pool-wide statistics.
.It Fl y
+Omit statistics since boot.
+Normally the first line of output reports the statistics since boot.
+This option suppresses that first line of output.
.It Fl w
+Display latency histograms:
+.Pp
+.Ar total_wait :
+Total IO time (queuing + disk IO time).
+.Ar disk_wait :
+Disk IO time (time reading/writing the disk).
+.Ar syncq_wait :
+Amount of time IO spent in synchronous priority queues. Does not include
+disk time.
+.Ar asyncq_wait :
+Amount of time IO spent in asynchronous priority queues. Does not include
+disk time.
+.Ar scrub :
+Amount of time IO spent in scrub queue. Does not include disk time.
.It Fl l
Include average latency statistics:
.Pp