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
