Does a SCSI bus initialization hold the complete system? Calculating
bogomips does.
> Face it - changing cpu speed is a _change_ in system configuration.
>
> Also can someone remind me what rdtsc does ? I thought it counted clock
> cycles. The point of bogomips calculation is to find out how many cycles
> in a second there really are.
>
> The other clock source might be memory bus - anyone heard of memory bus
> changing speed on the fly ?
Yes, but not on a PC. On the StrongARM SA-1100 the memory bus speed is
derived from the CPU core speed. Changing the core speed also means that
you have to reprogram the DRAM timing registers.
Erik
-- J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department of Electrical Engineering, Faculty of Information Technology and Systems, Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands Phone: +31-15-2785859 Fax: +31-15-2781843 Email J.A.K.Mouw@its.tudelft.nl WWW: http://www-ict.its.tudelft.nl/~erik/- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/