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    SubjectRe: [PATCH] x86_64 Avoid some atomic operations during address space destruction
    On Sunday 07 August 2005 14:16, Zachary Amsden wrote:
    > This turned out to be a huge win on 32-bit i386 in PAE mode, but it is
    > likely not as significant on x86_64; I don't know because I haven't
    > actually measured the cost. I don't have 64-bit hardware that I have
    > the luxury of rebooting right now, so this patch is untested, but if
    > someone wants to try this out, it might actually show a measurable win
    > on fork/exit. I lost my cycle count measurement diffs, but I don't
    > think they would apply cleanly to x86_64 anyways. This patch at least
    > looks good, and compiles cleanly on 2.6.13-rc5-mm1, thus passing some
    > level of testing.

    FYI I have queued it, but cannot apply it because the necessary generic
    code support is still not in mainline.

    Do you have any other optimizations pending for x86-64?

    There is still the iopl optimization that you did that is on my TODO list to
    add. Anything else.

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      Last update: 2005-08-25 18:58    [W:0.020 / U:8.848 seconds]
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