RE: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19

[Seth, Rohit]

From: Nick Piggin Friday, November 04, 2005 4:08 PM


>These are essentially the same problems that the frag patches face as
>well.

>> None of this is very attractive.
>> 

>Though it is simple and I expect it should actually do a really good
>job for the non-kernel-intensive HPC group, and the highly tuned
>database group.

Not sure how applications seamlessly can use the proposed hugetlb zone
based on hugetlbfs.  Depending on the programming language, it might
actually need changes in libs/tools etc.

As far as databases are concerned, I think they mostly already grab vast
chunks of memory to be used as hugepages (particularly for big mem
systems)which is a separate list of pages.  And actually are also glad
that kernel never looks at them for any other purpose.

-rohit
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