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WATCHDOG(4)	       FreeBSD Kernel Interfaces Manual		   WATCHDOG(4)

NAME
     watchdog -- Software watchdog

SYNOPSIS
     options WATCHDOG

DESCRIPTION
     watchdog is a set of checks and routines which allow the implementation
     of	a software watchdog solution.

     The user interface	for watchdog is	implemented via	a trio of sysctl OIDs.
     When debug.watchdog.enabled is set	to a positive value, watchdog timeout
     checks are	performed.  In order to	keep the watchdog from triggering,
     debug.watchdog.reset must be accessed, by reading or writing, within
     every debug.watchdog.timeout seconds.  Failure to keep the	watchdog
     updated will result in the	kernel outputting interrupt counts, back-
     traces, and then attempting to enter ddb(9).

SEE ALSO
     sysctl(8),	watchdogd(8)

HISTORY
     The watchdog code first appeared in FreeBSD 5.1.

AUTHORS
     The watchdog code and manual page were written by Sean Kelly
     <smkelly@FreeBSD.org>.  Some contributions	were made by Jeff Roberson
     <jeff@FreeBSD.org>.

FreeBSD	10.1			 June 25, 2003			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=watchdog&sektion=4&manpath=FreeBSD+5.2.1-RELEASE>

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