On 30/07/12 14:58, Konrad Neuwirth wrote: > Now, my question: I read the kernel.watchdog.auto and kernel.watchdog.period > knobs to mean the kernel can auto-update the kernel; on the other hand, the > documentation refers me to the watchdogd daemon. The latter one claims > /dev/wdog isn't writable. But why have two solutions to one problem? Doesn't > the kernel auto updating suffice, anyway?
There are two options: the kernel auto-refreshing or a userland process (watchdogd) refreshing. Whether you want one or the other depends; obviously the kernel auto-refresh is more convenient, but it may not be sufficient for your scenario. Just picture userland processes hanging but bits of the kernel going on. This is a scenario that only the latter option will get you out of. HTH, Alex
