Re: [OFFTOPIC] Re: [bigmem-patch] 4GB with Linux on IA32

Peter Desnoyers (pjd@fred001.dynip.com)
Fri, 20 Aug 1999 15:48:17 -0400 (EDT)

Scott Lurndal wrote:
>
> Certain applications, like oracle, really run well if you give them
> loads of RAM. (As pointed out above, you can't give it more than
> 4GB at one time, but you can use a windowing scheme with kernel
> intervention to map a window into a larger than 4GB shared memory
> segment, for example, to the application. Unixware does this
> to utilize the additional memory provided by PAE on ia32 arch).

Someone braver than I could conceivably write a hugemem device driver
which would let you access this memory, put ramdisks on it, and even
mmap segments of it. (think solid state storage, except on the memory
bus instead of the SCSI bus) That would probably get you most of the
benefit, with full compatibility with the current kernels.

-- 
............................................................................
 Peter Desnoyers 
 162 Pleasant St.         (617) 661-1979          pjd@fred.cambridge.ma.us
 Cambridge, Mass. 02139   (978) 461-0402 (work)   pjd@giga-net.com 


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