Messages in this thread | | | Date | Fri, 15 Jul 2005 11:14:28 +1000 | From | David Gibson <> | Subject | Re: RFC: Hugepage COW |
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On Thu, Jul 14, 2005 at 10:24:33AM -0700, Christoph Lameter wrote: > On Thu, 7 Jul 2005, David Gibson wrote: > > > Now that the hugepage code has been consolidated across the > > architectures, it becomes much easier to implement copy-on-write. > > Hugepage COW is of limited utility of itself, however, it is > > essentially a prerequisite for any of a number of methods of allowing > > userland programs to automatically use hugepages without code changes > > e.g. hugepage malloc() libraries, implicit hugepage mmap(), hugepage > > ELF segments. For certain applications (particularly enormous HPC > > FORTRAN programs), these can result in a large performance > > improvement. > > > > Thoughts? Flames? > > Great stuff. I am glad that you are cleaning up the hugepages and are > making progress improving them. What are your thoughts on implementing > fault handling for huge pages?
Well, the COW patch implements a fault handler, obviously. What specifically where you thinking about?
-- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/people/dgibson - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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