Usage:
 irqtop [options]

Display kernel interrupt information.

Options:
 -b, --batch            send tables to stdout, not to a static screen
 -c, --cpu-stat <when>  whether to show the per-cpu stats (auto|never|always)
 -C, --cpu-list <list>  show IRQs only for the specified cpus
 -d, --delay <secs>     wait this number of seconds between updates
 -J, --json             use JSON output format (implies --batch)
 -n, --iter <number>    the maximum number of iterations
 -o, --output <list>    which columns to show, and in which order
 -s, --sort <column>    sort the table on this column
 -S, --softirq          show softirqs instead of interrupts
 -t, --threshold <num>  show only IRQs with counters above this number

 -h, --help             display this help
 -V, --version          display version

The following interactive key commands are valid:
  i      sort by IRQ
  t      sort by TOTAL
  d      sort by DELTA
  n      sort by NAME
  q      quit program

Available output columns:
  IRQ    interrupts
  TOTAL  total count
  DELTA  delta count
  NAME   name

For more details see irqtop(1).