diff options
author | Jason McIntyre <jmc@cvs.openbsd.org> | 2007-02-18 20:41:35 +0000 |
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committer | Jason McIntyre <jmc@cvs.openbsd.org> | 2007-02-18 20:41:35 +0000 |
commit | 1b1dba9c3ad3f8d0a5acbea08d7b505f66ea6f62 (patch) | |
tree | 4bf4e37c4ef3e3699a925041dd21a9f4aea8ca83 /usr.sbin/iostat/iostat.8 | |
parent | 716d6cff0f0e482e73b15497d567c0806f8b7e78 (diff) |
- sync SYNOPSIS and usage()
- add args to the option list
- I/O does not need .Tn
- .Nm does not need an argument
based on a diff from Igor Sobrado
Diffstat (limited to 'usr.sbin/iostat/iostat.8')
-rw-r--r-- | usr.sbin/iostat/iostat.8 | 69 |
1 files changed, 34 insertions, 35 deletions
diff --git a/usr.sbin/iostat/iostat.8 b/usr.sbin/iostat/iostat.8 index 18496c327ff..822410a8a50 100644 --- a/usr.sbin/iostat/iostat.8 +++ b/usr.sbin/iostat/iostat.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: iostat.8,v 1.21 2005/09/06 23:28:23 jmc Exp $ +.\" $OpenBSD: iostat.8,v 1.22 2007/02/18 20:41:34 jmc Exp $ .\" $NetBSD: iostat.8,v 1.10 1996/10/25 18:21:57 scottr Exp $ .\" .\" Copyright (c) 1985, 1991, 1993 @@ -35,24 +35,20 @@ .Os .Sh NAME .Nm iostat -.Nd report -.Tn I/O -statistics +.Nd report I/O statistics .Sh SYNOPSIS .Nm iostat -.Op Fl CdDIT +.Op Fl CDdIT .Op Fl c Ar count .Op Fl M Ar core .Op Fl N Ar system .Op Fl w Ar wait .Op Ar drives .Sh DESCRIPTION -.Nm iostat -displays kernel -.Tn I/O -statistics on terminal, disk and CPU operations. +.Nm +displays kernel I/O statistics on terminal, disk and CPU operations. By default, -.Nm iostat +.Nm displays one line of statistics averaged over the machine's run time. The use of .Fl c @@ -67,7 +63,15 @@ to print raw, unaveraged values. .Pp The options are as follows: .Bl -tag -width Ds -.It Fl c +.It Fl C +Show CPU statistics. +This is enabled by default unless the +.Fl D , +.Fl d , +or +.Fl T +flags are used. +.It Fl c Ar count Repeat the display .Ar count times. @@ -78,43 +82,38 @@ each subsequent report is for the time period since the last display. If no .Ar wait interval is specified, the default is 1 second. -.It Fl C -Show CPU statistics. -This is enabled by default unless the -.Fl d , -.Fl D , -or -.Fl T -flags are used. +.It Fl D +Show alternate disk statistics. +Displays kilobytes transferred, number of +transfers, and time spent in transfers. +Use of this flag disables the default display. .It Fl d Show disk statistics. This is the default. Displays kilobytes per transfer, number of transfers, and megabytes transferred. Use of this flag disables display of CPU and tty statistics. -.It Fl D -Show alternate disk statistics. -Displays kilobytes transferred, number of -transfers, and time spent in transfers. -Use of this flag disables the default display. .It Fl I Show the running total values, rather than an average. -.It Fl M -Extract values associated with the name list from the specified core +.It Fl M Ar core +Extract values associated with the name list from the specified +.Ar core +instead of the default +.Pa /dev/mem . +.It Fl N Ar system +Extract the name list from the specified +.Ar system instead of the default -.Dq Pa /dev/mem . -.It Fl N -Extract the name list from the specified system instead of the default .Dq Pa /bsd . .It Fl T Show tty statistics. This is enabled by default unless the .Fl C , -.Fl d , +.Fl D , or -.Fl D +.Fl d flags are used. -.It Fl w +.It Fl w Ar wait Pause .Ar wait seconds between each display. @@ -123,7 +122,7 @@ If no repeat is specified, the default is infinity. .El .Pp -.Nm iostat +.Nm displays its information in the following format: .Bl -tag -width flag .It tty @@ -137,10 +136,10 @@ characters written to terminals Disk operations. The header of the field is the disk name and unit number. If more than four disk drives are configured in the system, -.Nm iostat +.Nm displays only the first four drives. To force -.Nm iostat +.Nm to display specific drives, their names may be supplied on the command line. .Pp |