Linked by Eugenia Loli on Wed 10th Oct 2001 16:20 UTC
Original OSNews Interviews Today we have a special guest in the series of interviews we conducting here at OSNews. Linus Torvalds, the well known Linux founder, is with us to discuss everything about the kernel, Microsoft, the naming of GNU/Linux and the future. Read on!
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hierarchy of pre-emptibility
by Wesley Parish on Wed 7th Nov 2001 10:24 UTC

I was reading Linus' comments on kernel pre-emptibility when I asked myself, if pre-empting the kernel is a GOOD THING, in some circumstances, and most probably not in others, why do we not adopt a hierarchy of pre-emptibility a la OS/2's priorities hierarchy? Eg, for some purposes, pre-empting the kernel when it is about to do a file write would be very important - eg, avionics tracking distant aircraft in a TCAS; for other purposes, pre-empting the kernel when it is about to do a file write would be strictly "no-way, buddy!", eg, a file server writing financial information to hard drive. Perhaps I'm making sense, maybe I'm not. It's just an idea.