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    SubjectRe: [PATCH] tsc-disable_B9
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    On Thu, 2002-08-15 at 17:56, Andrea Arcangeli wrote:
    > sorry but I don't see the point of badtsc only in kernel.
    >
    > If the TSC is bad that will be in particular bad from userspace where
    > there's no hope to know what CPU you're running on.

    You can still do meaningful measurements for things like profiling
    because the cpu hop is statistically uninteresting.

    > How do you detect the NUMA hw? That would be a nice addition so the
    > numa-Q users won't be required to add notsc to the append lilo line.

    The current Summit patches from IBM (the ones James did and merged in
    -ac) do detection for Numa-Q and Summit. Those are pending for Marcelo
    right now so if you have a better way I'd like to know.


    Alan

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