.TH IRQTOP "1" "February 2020" "util-linux" "User Commands"
.SH NAME
irqtop \- utility to display kernel interrupt information
.SH SYNOPSIS
.B irqtop
[options]
.SH DESCRIPTION
Display kernel interrupt counter information in
.BR top (1)
style view.
.PP
The default output is subject to change.  So whenever possible, you should
avoid using default outputs in your scripts.  Always explicitly define
expected columns by using
.BR \-\-output .
.SH OPTIONS
.TP
.BR \-o , " \-\-output " \fIlist\fP
Specify which output columns to print.  Use
.B \-\-help
to get a list of all supported columns.  The default list of columns may be
extended if list is specified in the format
.IR +list .
.TP
.BR \-d , " \-\-delay " \fIseconds\fP
Update interrupt output every
.I seconds
intervals.
.TP
.BR \-s , " \-\-sort " \fIcolumn\fP
Specify sort criteria by column name.  See
.B \-\-help
output to get column names.  The sort criteria may be changes in interactive
mode.
.TP
.BR \-V ", " \-\-version
Display version information and exit.
.TP
.BR \-h ,\  \-\-help
Display help text and exit.
.SH INTERACTIVE MODE KEY COMMANDS
.PD 0
.TP
.B i
sort by short irq name or number field
.TP
.B t
sort by total count of interrupts (the default)
.TP
.B d
sort by delta count of interrupts
.TP
.B n
sort by long descriptive name field
.TP
.B q Q
stop updates and exit program
.PD 1
.SH AUTHORS
.MT pizhenwei@\:bytedance.com
Zhenwei Pi
.ME
.br
.MT kerolasa@\:iki.fi
Sami Kerola
.ME
.br
.MT kzak@\:redhat.com
Karel Zak
.ME
.SH AVAILABILITY
The irqtop command is part of the util-linux package and is available from
.UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
Linux Kernel Archive
.UE .