Re: Getting big areas of memory, in 2.3.x?

William J. Earl (wje@cthulhu.engr.sgi.com)
Fri, 10 Dec 1999 10:04:49 -0800 (PST)

Ingo Molnar writes:
...
> this is possible (sans the relocation process which is a special thing
> anyway), but why would we want to allocate large chunks of contiguous user
> pages?
...

To be able to use, for example, 2 or 4 MB pages on x86 to reduce
TLB thrashing (and, if the I/O path understands large pages, the software
overhead to set up large direct or raw I/O requests).

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