watchdog

file: /proc/sys/kernel/watchdog
variable: kernel.watchdog
Official reference

This parameter can be used to disable or enable the soft lockup detector and the NMI watchdog (i.e. the hard lockup detector) at the same time.

  • 0 - disable both lockup detectors
  • 1 - enable both lockup detectors

The soft lockup detector and the NMI watchdog can also be disabled or enabled individually, using the soft_watchdog and nmi_watchdog parameters. If the watchdog parameter is read, for example by executing

cat /proc/sys/kernel/watchdog

the output of this command (0 or 1) shows the logical OR of soft_watchdog and nmi_watchdog.

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