[Xen-devel] Re: [PATCH] Align periodic vpts

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 11/02/2009 12:00, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:

> Think it more, I think that Jimmy's patch is simpler and more
> accurate for the purpose. It's just a one-time adjustment for
> periodical timer, and no harm to single-shot timer. It can be
> enabled by default, while per-domain range has side-effect
> unless adding more code to differentiate timers which is not
> worthy. 
> 
> Of course per-domain switch is still required to disable it as
> your previous comment, for old guest.

I'd actually be interested in knowing how just bumping Xen cmdline option
timer_slop= would influence power usage and guest timers. No new code
needed, a nice sliding dial (per host) for power usage versus timer
accuracy.

 -- Keir



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