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

William J. Earl
1999-12-10T18:04:49Z

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).