Re: timer interrupts & scheduling

Matthew Vanecek (mev0003@unt.edu)
Sun, 28 Mar 1999 21:57:41 -0600 (CST)

On 28 Mar, linas@linas.org spewed forth:
::
:: Hi,
::
:: Am porting the Linux kernel to a new architecture (the 370 instruction set).
:: I noticed that the timer interrupt does very little. The question is this:
:: how does scheduling work if/when there are no other interrupts occuring?
:: e.g. have two numeric processes running, neither is making system calls,
:: neither is swapping. etc.
::
:: The esa/390's are mainframes; there are no serial ports, no video or video interrupts,
:: no regular i/o or bus interrupts; nothing else is ticking in any sort of
:: quasi-periodic manner. What should I do, make the timer interrupt do a schedule
:: every ten ticks or something?
::
:: --linas
::

Hehe, now *there's* and undertaking! Running Linux on an IBM mainframe!
Do you actually have access to a mainframe to test on? I'd be
interested in know what type of progress you are making, although I
don't think our CC admins would let me try it out.

-- 
Matthew Vanecek
Studies in Business Computers at the University of North Texas
http://www.unt.edu/bcis
Visit my Website at http://people.unt.edu/~mev0003
*****************************************************************
For 93 million miles, there is nothing between the sun and my shadow
except me. I'm always getting in the way of something...






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