Hello, all A question: what are advantages of using IO and local APICs on UPs? I can think of: 1) configurability, 2) larger number of sources (?), 3) NMI. But performance-wise? And if it works without APICs too (enough interrupts, not too many conflicts) - does it make sense to eable them? How is the APIC timer better than the standard PIT? Thanks Guennadi --------------------------------- Guennadi Liakhovetski, Ph.D. DSA Daten- und Systemtechnik GmbH Pascalstr. 28 D-52076 Aachen Germany -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/