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    SubjectRe: Timestamp counters on SMP
    > > > Why would you want to use TSC in the user space? Coherent time and TSC
    > >
    > > for timing, of course, without the overhead of a syscall.
    >
    > Where do you need this? And how will your user space run on platforms
    > without TSC?

    ia32, sparc, pa-risc, alpha and probably mips and ppc all have
    user-visible clock cycle counters. anyone interested in high-res
    timing has been using them for years.


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