On 05/27/2010 03:47 PM, Jerry Geis wrote: > I have centos 5.4 on an HP laptop, as below the /proc/cpuinfo shows Dual > core, > however, there is only 1 processor listed in /proc/cpuinfo. > > Is the OS only using a single core? Check the BIOS, I have seen HP desktops that have option in BIOS to turn off multicore support. Then only single core is exposed to the OS. -- Veiko