X11 extremely slow while compiling other things

[Pollywog]

> Yi Wang wrote:
> > Hi,
> >
> > My box is running 7.0-PREREALEASE.
> >
> > When I run more than two building tasks, X11 became extremely slow.
> > The mouse pointer can also hardly move.
> >
> > Running more than two building tasks under 6-stable does not introduce
> > the issues.
> >
> > Does any one know how to solve it?

Have you tried the "renice" command?

man renice