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    Subjectpage fault scalability patchsets update: prezeroing, prefaulting and atomic operations
    I thought I save myself the constant crossposting of large amounts of
    patches. Patches, documentation, test results etc are available at

    http://oss.sgi.com/projects/page_fault_performance/

    Changes:
    - Performance tests for all patchsets (i386 single processor,
    Altix 8 processors and Altix 128 processors)
    - Archives of patches so far
    - Some docs (still needs work)
    - Patches against 2.6.11-rc4-bk4

    Patch specific:

    atomic operations for page faults (V17)

    - Avoid incrementing page count for page in do_wp_page (see discussion
    with Nick Piggin on last patchset)

    prezeroing (V7)

    - set /proc/sys/vm/scrub_load to 1 by default to avoid slight performance
    loss during kernel compile on i386
    - Scrubd needs to be configured in kernel configuration as an experimental
    feature.
    - Patch still follows kswapd's method to bind node specific scrubd daemons
    to each NUMA node. Cannot find any new infrastructure to assign tasks to
    certain nodes. kthread_bind() binds to single cpu and not to a NUMA
    node. Guess other API work would have to be first done to realize
    Andrews proposed approach.

    prefaulting (V5)

    - Set default for /proc/sys/vm/max_prealloc_order to 1 to avoid
    overallocating pages which led to a performance loss in some
    situations.

    This is pretty complex thing to manage so please tell me if I missed
    anything ...
    -
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