watchdog question

Konrad Neuwirth konrad at
Mon Jul 30 06:58:25 PDT 2012

Dear readers, 

because of a problem of a system freezing up ever so often (and so hard that even the kernel debugger wont launch), I am looking into activating the hardware watchdog. I've configured it in the kernel and it is recognized all well. 

Now, my question: I read the 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? 

Thank you, 

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