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    SubjectRe: [Lse-tech] Re: Performance of partial object-based rmap
    >>> Could I get a larger, multiplicative differential profile?
    >>> i.e. ratios of the fractions of profile hits?
    >>> If you have trouble generating such I can do so myself from
    >>> fuller profile results.
    >
    > On Wed, Feb 19, 2003 at 09:14:10PM -0800, Martin J. Bligh wrote:
    >> before:
    >> 187256 total
    >> after:
    >> 170196 total
    >
    > Well, I was trying to get an idea of what got slower to compensate
    > for the improvement in page_(add|remove)_rmap() times.

    diffprofile:

    1514 default_idle
    921 .text.lock.file_table
    145 vm_enough_memory
    131 release_pages
    93 file_move
    68 __copy_to_user_ll
    62 fd_install
    60 buffered_rmqueue
    58 vma_merge
    52 __fput
    ...
    -65 kmem_cache_alloc
    -72 copy_page_range
    -73 do_anonymous_page
    -76 get_empty_filp
    -98 filemap_nopage
    -168 unmap_all_pages
    -352 find_get_page
    -402 kmem_cache_free
    -594 __pte_chain_free
    -4360 page_add_rmap
    -13542 page_remove_rmap
    -17060 total

    I'll try out akpm's file table stuff later today.

    M.

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