Re: X15 alpha release: as fast as TUX but in user space (fwd)

From: Ingo Molnar (
Date: Sat Apr 28 2001 - 10:52:42 EST

On Sat, 28 Apr 2001, Andi Kleen wrote:

> You can also just use the cycle counter directly in most modern CPUs.
> It can be read with a single instruction. In fact modern glibc will do
> it for you when you use clock_gettime(CLOCK_PROCESS_CPUTIME_ID, ...)

well, it's not reliable while using things like APM, so i'd not recommend
to depend on it too much.


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This archive was generated by hypermail 2b29 : Mon Apr 30 2001 - 21:00:20 EST