[Qemu-devel] Re: [PATCH 02/10] Add buffered_file_internal constant

[Anthony Liguori]

On 11/30/2010 08:11 AM, Michael S. Tsirkin wrote:
> On Tue, Nov 30, 2010 at 08:02:56AM -0600, Anthony Liguori wrote:
>    
> > If we're burning excess CPU walking a 100MB bitmap, then let's fix
> > that problem.  Stopping every 1MB worth of the bitmap to do other
> > work just papers over the real problem (that we're walking 100MB
> > bitmap).
> >      
> Just using a bit per page will already make the problem 8x smaller,
> won't it?  Is that enough to avoid the need for a new kernel interface?
>    

I don't know, but it's definitely a good thing to try.

Regards,

Anthony Liguori