On 10/24/05, Thorsten Moellers <kernelliste@xxxxxxxxxxx> wrote: > Hi, all! > I'm working on a DVS scheduling algorithm. To initialize the scheduler, > I need to get the maximum available CPU frequency as early as possible. > Since the scheduler is not only for DVS relevant but also for fixed > frequency desktop systems, it would be great to get the information > withouth utilizing the cpufreq module. Is there a source for that > information? What does /proc/cpuinfo do to get the information it outputs? I'm assuming you could do something similar (might be as little as querying the CPU during boot, but I have no idea). Are you asking if this is possible in userspace or kernelspace? It's a bit hard to tell from your mail. > (The macro HZ delivers AFAIK the current frequency, which is not what I > want.) HZ has nothing to do with the CPU frequency; it's an approximation of what frequency the timer interrupt was programmed to fire at (ACTHZ, in the kernel, is a more precise value, but not used anywhere except in manipulating the timer interrupt source). Thanks, Nish -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
