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    SubjectRe: [RFC][PATCH 6/8] mm: handle_speculative_fault()
    On Thu, 7 Jan 2010 10:36:52 -0600 (CST)
    Christoph Lameter <cl@linux-foundation.org> wrote:

    > On Thu, 7 Jan 2010, Linus Torvalds wrote:
    >
    > > You're missing what Arjan said - the jav workload does a lot of
    > > memory allocations too, causing mmap/munmap.
    >
    > Well isnt that tunable on the app level? Get bigger chunks of memory
    > in order to reduce the frequency of mmap operations? If you want
    > concurrency of faults then mmap_sem write locking currently needs to
    > be limited.

    if an app has to change because our kernel sucks (for no good reason),
    "change the app" really is the lame type of answer.


    --
    Arjan van de Ven Intel Open Source Technology Centre
    For development, discussion and tips for power savings,
    visit http://www.lesswatts.org


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