# irqtop

## NAME



           irqtop - display kernel interrupt information
    


## SYNOPSIS



           **irqtop**[options]
    


## DESCRIPTION



           Display interrupt-counter information from the kernel in the style
           of top(1).
    
           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**.
    


## OPTIONS



           **-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_.
    
           **-b** , **--batch**
               Send the produced tables to stdout instead of to a static
               screen. This can be used for sending the output to other
               programs or to a file.
    
           **-c** , **--cpu-stat** _when_
               Whether to show the per-CPU statistics. Possible arguments
               are: **auto** , **never** , **always**. The default is **auto** : the per-CPU
               statistics are shown when the window is wide enough for the
               full list of CPUs.
    
           **-C** , **--cpu-list** _list_
               Specify cpus in list format to show.
    
           **-d** , **--delay** _seconds_
               Update the tables every this number of seconds.
    
           **-J** , **--json**
               Use JSON output format. Implies **--batch**.
    
           **-n** , **--iter** _number_
               Specifies the maximum iterations before quitting.
    
           **-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.
    
           **-t** , **--threshold** _min_
               Only show IRQs with counters above the specified threshold.
               Human readable values are supported (e.g. 1.2K).
    
           **-h** , **--help**
               Display help text and exit.
    
           **-V** , **--version**
               Display version and exit.
    


## INTERACTIVE MODE KEY COMMANDS



           **i**
               sort by short irq name or number field
    
           **t**
               sort by total count of interrupts (the default)
    
           **d**
               sort by delta count of interrupts
    
           **n**
               sort by long descriptive name field
    
           **q Q**
               stop updates and exit program
    


## AVAILABILITY



           The **irqtop** command is part of the util-linux package which can be
           downloaded from Linux Kernel Archive
           <https://www.kernel.org/pub/linux/utils/util-linux/>. This page is
           part of the _util-linux_ (a random collection of Linux utilities)
           project. Information about the project can be found at 
           ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
           bug report for this manual page, send it to
           util-linux@vger.kernel.org. This page was obtained from the
           project's upstream Git repository
           ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
           2025-08-11. (At that time, the date of the most recent commit that
           was found in the repository was 2025-08-05.) If you discover any
           rendering problems in this HTML version of the page, or you
           believe there is a better or more up-to-date source for the page,
           or you have corrections or improvements to the information in this
           COLOPHON (which is _not_ part of the original manual page), send a
           mail to man-pages@man7.org
    
    util-linux 2.42-start-521-ec46  2025-08-09                      _IRQTOP_(1)
    


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