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mm: optimisations

Nick Piggin linux-mm lkml 1 version In review

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  1. v1 Latest12 patches 11 repliesIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/12mm: free_pages_and_swap_cache optmm/swap_state.c+2 -20 replies
2/12mm: pagealloc optmm/page_alloc.c+11 -70 replies
3/12mm: release optmm/swap.c+14 -70 replies
4/12mm: set_page_refs optmm/internal.h mm/page_alloc.c+17 -190 replies
5/12mm: microopt conditionsmm/page_alloc.c+8 -80 replies
6/12mm: remove bad_rangelib/Kconfig.debug mm/page_alloc.c+21 -82 replies
7/12mm: bad_page optmm/page_alloc.c+18 -230 replies
8/12mm: remove pcp lowinclude/linux/mmzone.h mm/page_alloc.c+2 -80 replies
9/12mm: page_state optinclude/linux/page-flags.h mm/page_alloc.c mm/rmap.c +1 more+113 -753 replies
10/12mm: page_state fixesmm/page_alloc.c+2 -30 replies
11/12mm: page_alloc cleanupsmm/page_alloc.c+6 -100 replies
12/12mm: rmap optinclude/linux/page-flags.h include/linux/rmap.h mm/memory.c +1 more+62 -312 replies

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Cover letter [patch 0/12] mm: optimisations

The following patchset against 2.6.15-rc2 contains optimisations to the mm subsystem, mainly the page allocator. Single threaded write-fault based allocation performance is improved ~5% on G5 with SMP kernel, and ~7% on P4 Xeon with SMP kernel (this measurement includes the full fault path, page copy, unmapping, and page freeing, so actual kernel allocator improvement should be larger).

Thanks to feedback from Christoph, Andi, and Bob Picco.

This patchset is cut down to include just straight optimisations and no behavioural changes.

Nick

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SUSE Labs, Novell Inc.


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