Robert Hancock wrote:
Actually, we need to ask the CPU/System makers to provide a system wide
Generally user mode code should just be using gettimeofday. When the TSC
is usable as a sane time source, the kernel will use it. When it's not,
it will use something else like the HPET, ACPI PM Timer or (at last
resort) the PIT, in increasing degrees of slowness.
But gettimeofday is much too expensive compared to RDTSC.
Wink
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