Re: [Qemu-devel] WinXp Guest clock drift

[Brad Campbell]

Magnus Damm wrote:
> On Mon, 21 Mar 2005 23:15:24 -0800, Mike Swanson
> <address@hidden> wrote:
>
> > Well, this is probably a nuisance in all emulators :p
>
>
> Does it have to be that way? I mean - if a media player can keep track
> of the time of a movie (with and without sound) then wouldn't it be
> possible for other applications like emulators to keep accurate time?
>
> I do not know how the time is handled in QEMU, but I wrote code some
> years ago that monitored itself with gettimeofday() and adjusted the
> drift on the fly.

I actually find all sorts of oddities with timing and qemu emulation. Sometimes when installing 
stuff in a windows guest the guest slows to a crawl until I move the mouse around or drag a window 
or something similar. Almost like it starts to go to sleep until it gets some user interaction.

There are a number of emulation oddities thus far, I just get used to them and work around them. I 
guess I should actually have a go at debugging them really.


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