Why is the NMI watchdog not working properly in Red Hat Enterprise Linux 4.6?
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The NMI watchdog functionality in the kernel panics the system if the kernel does not service interrupts for more than 30 seconds. This is enabled by default on the x86_64 platform and is useful for gathering a vmcore or panic traceback on a hung system.
In Red Hat Enterprise Linux 4.6 a kernel patch to provide support for newer AMD processors introduced a regression that prevented NMI ...
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