Ubuntu
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  1. Bug #643822
  2. Comment #28

Comment 28 for bug 643822

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Michael Mulqueen (michael.mulqueen) wrote : Re: [Bug 643822] Re: System freezes unless mouse/keyboard constantly used

@Rüdiger, I don't really understand it enough to explain it, but I
understand the general gist of it. This bug is related to the way that
the kernel keeps time. The way the kernel used to work (by default)
was by ticking. The new way is tickless. nohz=on is tickless, nohz=off
is tickful. I won't even try to explain it. Some explanation here that
was published when it was added to the kernel:
http://www.linux-watch.com/news/NS5286251174.html

Regards,
Mike