Date: Sun, 16 Aug 2015 12:28:01 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: [PATCH] replace a mfence instruction by an xchg instruction On Sat, Aug 15, 2015 at 08:51:41AM +0200, Jens Gustedt wrote: > according to the wisdom of the Internet, e.g > > https://peeterjoot.wordpress.com/2009/12/04/intel-memory-ordering-fence-instructions-and-atomic-operations/ > > 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? Rich
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