Hello, I have a system with a Pentium P4 and an Intel D865GBF mainboard. The CPU has hyperthreading, but this is disabled in the BIOS. (The system got delivered that way. I bought it w/o any operating system.) Nevertheless, SUSE 10.0 seems to detect Hyperthreading, since it uses an SMP kernel. Also, /proc/cpuinfo contains the lines model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 1 cpu MHz : 2993.250 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 where -- as far as I understood -- a `siblings' line with a value >1 denotes hyperthreading. So, is it necessary to enable hyperthreading in BIOS, or does Linux just ignore that setting and utilizes the CPU's full capabilities anyhow? TIA for any answer, Joachim -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Joachim Schrod Email: jschrod@acm.org Roedermark, Germany