WATCHDOGD(8) | System Manager's Manual | WATCHDOGD(8) |
watchdogd
—
watchdog timer retrigger daemon
watchdogd |
[-dnq ] [-i
interval] [-p
period] |
watchdogd
is a daemon to activate and
periodically retrigger the
watchdog(4) timer device
from userland. 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
interval seconds, watchdogd
resets the hardware timer to period. See also
watchdog(4) for more
information on how watchdog timers work.
The options are as follows:
-d
watchdogd
will run in the foreground.-i
intervalwatchdogd
should
retrigger the hardware timer. If no interval is specified, the value of
period (see below) divided by three is used.-n
-p
period-q
watchdogd
will not output a warning message if the underlying hardware adjusted the
timeout period.The watchdogd
program first appeared in
OpenBSD 3.8.
watchdogd
was written by
Marc Balmer
<mbalmer@openbsd.org>.
July 16, 2013 | OpenBSD-6.9 |