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    SubjectRe: *sigh* /proc/*/pagemap


    On Mon, 7 Jul 2008, Matt Mackall wrote:
    >
    > It exists to make the VM stop being a big black box. Before now the VM
    > exposed little beyond statistics, many of which are basically
    > meaningless (RSS?). With pagemap, you can actually see precisely where
    > things are getting allocated, how they're getting shared, etc. Think
    > NUMA, think cell phones.

    Umm. How about setting it under CONFIG_DEBUG_VM or something like that
    then?

    Right now it's not even _asked_ about, unless you're EMBEDDED, and
    defaults to 'y'. Which means that it has all the downsides, an none of the
    upsides, for 99.99% of all users.

    Linus


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