On 11 June 2010 15:46, Martin Sustrik <[email protected]> wrote: > Steven, > > > With Nehalem you should be using gettimeofday() as it's now using > > rdtscp which apparently solves world hunger according the LKML. On > > SPARC, RS6000, PA-RISC gettimeofday() is already light so the only issue > > would appear to be older x86 platforms and possibly the embedded range > > which performance is kind of moot anyway. > > Any benchmarks you are aware of? > > Here's the article,
http://lwn.net/Articles/388188/ <http://lwn.net/Articles/388188/>They talk about masking out RDTSC out of user space which would mean you can only use gettimeofday(), etc. -- Steve-o
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