On Wed, Jan 31, 2007 at 02:25:26AM -0800, Ken Restivo wrote: > 2) Try DRM or some kind of accelerated graphics for Xorg This might make the problem worse. Many graphics cards are mean to the PCI bus. The extra interrupts can make latency issues worse. What version of fftw is being used on your system? If you're using fftw v2, make sure to build it for your arch! If you're using fftw3, arch specific SIMD is automatically used by the lib. -- Ross Vandegrift ross@xxxxxxxxxxx "The good Christian should beware of mathematicians, and all those who make empty prophecies. The danger already exists that the mathematicians have made a covenant with the devil to darken the spirit and to confine man in the bonds of Hell." --St. Augustine, De Genesi ad Litteram, Book II, xviii, 37