BogoMIPS and magical values

["Denis Kirjanov" <kirjanov@xxxxxxxxx>]

Hi!

The function calibrate_delay() from init/main.c comtains the following line:
printk(KERN_CONT "%lu.%02lu BogoMIPS (lpj=%lu)\n",
            loops_per_jiffy/(500000/HZ),
            (loops_per_jiffy/(5000/HZ)) % 100, loops_per_jiffy);

Please explain how bogoMIPS is computed. Why loops_per_jiffy is divided by 500000.

Thanks in advance.

-- 
Regards,
Denis