diff options
Diffstat (limited to 'usr.sbin/iostat/iostat.8')
-rw-r--r-- | usr.sbin/iostat/iostat.8 | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/usr.sbin/iostat/iostat.8 b/usr.sbin/iostat/iostat.8 index e623de4..035acb8 100644 --- a/usr.sbin/iostat/iostat.8 +++ b/usr.sbin/iostat/iostat.8 @@ -25,8 +25,6 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $FreeBSD$ -.\" .\" Copyright (c) 1985, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" @@ -59,6 +57,7 @@ .\" SUCH DAMAGE. .\" .\" @(#)iostat.8 8.1 (Berkeley) 6/6/93 +.\" $FreeBSD$ .\" .Dd December 22, 1997 .Dt IOSTAT 8 @@ -70,7 +69,7 @@ statistics .Sh SYNOPSIS .Nm iostat -.Op Fl CdhKIoT? +.Op Fl CdhKIoT .Op Fl c Ar count .Op Fl M Ar core .Op Fl n Ar devs @@ -123,16 +122,16 @@ instead of the default Display up to .Ar devs number of devices. -.Nm iostat +.Nm Iostat will display fewer devices if there aren't .Ar devs devices present. .It Fl N Extract the name list from the specified system instead of the default -.Dq Pa /kernel . +.Pa /kernel . .It Fl o Display old-style -.Nm iostat +.Nm device statistics. Sectors per second, transfers per second, and miliseconds per seek are displayed. If .Fl I @@ -203,7 +202,7 @@ all devices in the system are compared. Any device that fully matches any .Fl t argument will be included in the -.Nm iostat +.Nm output, up to the number of devices that can be displayed in 80 columns, or the maximum number of devices specified by the user. .It Fl T @@ -217,8 +216,6 @@ seconds between each display. If no repeat .Ar count is specified, the default is infinity. -.It Fl ? -Display a usage statement and exit. .El .Pp .Nm Iostat @@ -233,27 +230,28 @@ characters written to terminals .El .It devices Device operations. The header of the field is the device name and unit number. -.Nm iostat +.Nm Iostat will display as many devices as will fit in a standard 80 column screen, or the maximum number of devices in the system, whichever is smaller. If .Fl n is specified on the command line, iostat will display the smaller of the requested number of devices, and the maximum number of devices in the system. To force -.Nm iostat +.Nm to display specific drives, their names may be supplied on the command line. -.Nm iostat +.Nm Iostat will not display more devices than will fit in an 80 column screen, unless the .Fl n argument is given on the command line to specify a maximum number of devices to display. If fewer devices are specified on the command line -than will fit in an 80 column screen, iostat will show only the specified -devices. +than will fit in an 80 column screen, +.Nm +will show only the specified devices. .Pp The standard -.Nm iostat +.Nm device display shows the following statistics: .Pp .Bl -tag -width indent -compact @@ -266,7 +264,7 @@ megabytes per second .El .Pp The standard -.Nm iostat +.Nm device display, with the .Fl I flag specified, shows the following statistics: @@ -281,7 +279,7 @@ total number of megabytes transferred .El .Pp The old-style -.Nm iostat +.Nm display (using .Fl o ) shows the following statistics: @@ -296,7 +294,7 @@ average milliseconds per transaction .El .Pp The old-style -.Nm iostat +.Nm display, with the .Fl I flag specified, shows the following statistics: @@ -326,9 +324,9 @@ average milliseconds per transaction .Sh FILES .Bl -tag -width /dev/kmem -compact .It Pa /kernel -Default kernel namelist. +default kernel namelist .It Pa /dev/kmem -Default memory file. +default memory file .El .Sh EXAMPLES .Dl iostat -w 1 da0 da1 cd0 @@ -353,7 +351,7 @@ to either Direct Access or CDROM devices. .Pp .Dl iostat -h -n 8 -w 1 .Pp -Display up to 8 devices with the most I/O every second ad inifitum. +Display up to 8 devices with the most I/O every second ad infinitum. .Pp .Dl iostat -dh -t da -w 1 .Pp @@ -387,7 +385,7 @@ The sections starting with ``Interpreting system activity'' in .%T "Installing and Operating 4.3BSD" . .Sh HISTORY This version of -.Nm iostat +.Nm first appeared in .Fx 3.0 . .Sh BUGS |