[Xen-devel] Re: events/0 and xenconsoled wakeups

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 03/25/2011 03:28 PM, Sander Eikelenboom wrote:
> Hi Jeremy,
>
> Is this thing still on your list ?
> http://www.gossamer-threads.com/lists/linux/kernel/1281515
>
> Ran powertop today, and events/0 and xenconsoled seem to be still responsible 
> for the majority of wakeups.

Yeah.  Unfortunately the underlying bug is a design error in the tty
subsystem, which will be hard to fix.  However, the one-liner fix can
mitigate the problem and reduce the wakeups to 100Hz.

Also, attaching a console to the various hvcs will also fix it.

    J

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