On Fri, 2012-01-27 at 19:22 +0000, Konrad Rzeszutek Wilk wrote:

 - This patch set solves the CPU banding problem I've seen with the
   older netback. The older one  I could see X netback threads eating
80%
   of CPU. With this one, the number is down to 13-14%. 

"CPU banding problem"?

If you had X threads using 80% before do you now see Y threads using
13-14% where Y is bigger or smaller than X? Is 80*X ~= 13*Y?

Ian.