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    SubjectRe: [PATCH 5/5] proc: export more page flags in /proc/kpageflags
    On Tue, Apr 28, 2009 at 1:33 AM, Wu Fengguang <> wrote:
    > 1) FAST
    > It takes merely 0.2s to scan 4GB pages:
    >        ./page-types  0.02s user 0.20s system 99% cpu 0.216 total

    OK on a tiny system ... but sounds painful on a big
    server. 0.2s for 4G scales up to 3 minutes 25 seconds
    on a 4TB system (4TB systems were being sold two
    years ago ... so by now the high end will have moved
    up to 8TB or perhaps 16TB).

    Would the resulting output be anything but noise on
    a big system (a *lot* of pages can change state in
    3 minutes)?

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