watchdog timer retrigger daemon
watchdogd is a daemon to activate and periodically
retrigger the watchdog(4) timer device
watchdogd is designed to work in high
load environments, where other methods (such as a shell script invoking
sysctl(8)) would involve too much overhead.
The basic premise is that after every
resets the hardware timer to period. See also
watchdog(4) for more information on how
watchdog timers work.
The options are as follows:
- Do not daemonize. If this option is specified,
watchdogd will run in the foreground.
- Specify how often, in seconds,
retrigger the hardware timer. If no interval is specified, the value of
period (see below) divided by three is used.
- Do not restore the watchdog to its original values once it has been
activated. With this set, the system will be rebooted by the watchdog even
after a halt(8).
- Set the hardware timer to expire in period seconds.
The default is 30 seconds.
- Be quiet. With this option specified,
will not output a warning message if the underlying hardware adjusted the
watchdogd program first appeared in