On Mon, Oct 29, 2012 at 4:03 PM, Greg Kroah-Hartman
[off-list ref] wrote:

On Mon, Oct 29, 2012 at 07:00:54PM -0400, Mark Lord wrote:

quoted

Both systems feel much more sluggish than usual with 3.4.16 running.
Reverted them both back to earlier kernels (3.4.9, 3.4.4-PAE),
and the usual responsive feel has returned.

Vague, I know, but something bad happened in there somewhere.

That's too vague for me to do anything with, sorry.  Bisection would be
good if you can figure out how to measure this.

yes, at least you can post boot log of working kernel and not working kernel.
then we could figure out if there is any corner case is not handled or
uncovered.