Messages in this thread | | | Date | Tue, 25 Mar 2008 15:59:47 -0700 | From | "H. Peter Anvin" <> | Subject | Re: What means Hugepage? 8KiB,16KiB,..,2MiB or 4MiB? |
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J.C. Pizarro wrote: > What means Hugepage? > > Does it mean 8KiB? 16KiB? 32KiB? 64KiB? 2MiB? 4MiB? > > The real page sizes of x86 and x86-64 are 4 KiB for this linux kernel. > > But the page sizes can be soft 8 KiB or 16 KiB or 32 KiB or 64 KiB > if it is implemented in the memory manager of the kernel. > > But too they exist real page sizes of 2 MiB and 4 MiB that they have > some reserved entries of TLB in the specs of Intel/AMD processors > for these gigant pages.
On x86, it means 2/4 MiB, or even 1 GiB in some very strange circumstances. Other architectures might be different.
-hpa
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