Jack Gates wrote:
> I did this and I see that it created a file name max-user-freq
> in /proc/sys/dev/rtc/ and the only thing in the file is 1024
>
> So what does this mean?
May I recommend that you read Documentation/rtc.txt from the kernel
sources? You can find a recent copy at
http://www.mjmwired.net/kernel/Documentation/rtc.txt
It explains what the RTC is, that it can generate signals at a
relatively high frequency, that this is a problem for slow
computers, and so you have to turn on the support for high
frequency interrupts.
And that file is how you do so.
Using these RTC signals means that a program can "wake up" very
frequently (to handle sound generation or whatever) without taking
too much computing time.