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Date: Sun, 16 Aug 2015 12:28:01 -0400
From: Rich Felker <>
Subject: Re: [PATCH] replace a mfence instruction by an xchg

On Sat, Aug 15, 2015 at 08:51:41AM +0200, Jens Gustedt wrote:
> according to the wisdom of the Internet, e.g
> a mfence instruction is about 3 times slower than an xchg instruction.

I can't find where the article makes this claim. Could you point out
what part you're referring to?


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