Messages in this thread | | | Subject | Re: [RFC] VM: I have a dream... | From | Bryan Henderson <> | Date | Fri, 27 Jan 2006 11:17:04 -0800 |
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>> So we know it [single level storage] works, but also that people don't seem to care much for it > >People didn't care, because the AS/400 was based on a proprietary solution.
I don't know what a "proprietary solution" is, but what we had was a complete demonstration of the value of single level storage, in commercial use and everything, and other computer makers (and other business units of IBM) stuck with their memory/disk split personality. For 25 years, lots of computer makers developed lots of new computer architectures and they all (practically speaking) had the memory/disk split. There has to be a lesson in that.
>With todays generically mass-produced 64bit archs, what's not to care about a >cost-effective system that provides direct mapped access into linear address >space?
I don't know; I'm sure it's complicated. But unless the stumbling block since 1980 has been that it was too hard to get/make a CPU with a 64 bit address space, I don't see what's different today.
-- Bryan Henderson IBM Almaden Research Center San Jose CA Filesystems
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