watchdogd -- Software watchdog daemon
watchdogd [-d] [-I file]
The watchdogd utility interfaces with the kernel's software watchdog
facility to ensure that the system is in a working state. If watchdogd
is unable to interface with the kernel over a specific timeout, the kernel
will take actions to assist in debugging or restarting the computer.
One possible circumstance which will cause a watchdog timeout is an
interrupt storm. If this occurs, watchdogd will no longer execute and
thus the kernel's watchdog routines will take action after a configurable
Upon receiving the SIGTERM or SIGINT signals, watchdogd will first
instruct the kernel to no longer perform watchdog checks and then will
The watchdogd utility recognizes the following runtime options:
-I file Write the process id of the watchdogd utility in the specified
-d Don't fork. When this option is specified, watchdogd will not
fork into the background at startup.
The watchdogd utility and manual page were written by Sean Kelly
Some contributions made by Jeff Roberson <jeff@FreeBSD.org>.
The watchdogd utility appeared in FreeBSD 5.1.
FreeBSD 5.2.1 June 25, 2003 FreeBSD 5.2.1 [ Back ]