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irqtop - Man Page

utility to display kernel interrupt information


irqtop [options]


Display kernel interrupt counter information in top(1) style view.

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 --output.


-o,  --output list

Specify which output columns to print. Use --help to get a list of all supported columns. The default list of columns may be extended if list is specified in the format +list.

-c,  --cpu-stat mode

Show per-cpu statistics by specified mode. Available modes are: auto, enable, disable. The default option auto detects the width of window, then shows the per-cpu statistics if the width of window is large enough to show a full line of statistics.

-C,  --cpu-list list

Specify cpus in list format to show.

-d,  --delay seconds

Update interrupt output every seconds intervals.

-s,  --sort column

Specify sort criteria by column name. See --help output to get column names. The sort criteria may be changes in interactive mode.

-S,  --softirq

Show softirqs information.

-h,  --help

Display help text and exit.

-V,  --version

Print version and exit.

Interactive Mode Key Commands


sort by short irq name or number field


sort by total count of interrupts (the default)


sort by delta count of interrupts


sort by long descriptive name field

q Q

stop updates and exit program


Zhenwei Pi, Sami Kerola, Karel Zak

Reporting Bugs

For bug reports, use the issue tracker at https://github.com/util-linux/util-linux/issues.


The irqtop command is part of the util-linux package which can be downloaded from Linux Kernel Archive.


2024-05-28 util-linux 2.40.2