Question about memcpy

[valdis.kletnieks at vt.edu]

On Mon, 09 Jul 2018 19:34:44 +0530, Himanshu Jha said:

> I think for these benchmarking stuff, to evaluate the cycles and time
> correctly you should use the __rdtscp(more info at "AMD64 Architecture
> Programmer’s Manual Volume 3: General-Purpose and System Instructions"
> Pg 401)

Just beware that many Intel (and maybe some AMD) chipsets have a non-constant
TSC frequency.  Check /proc/cpuinfo for 'constant_tsc' before relying on the value.

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