Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH RFC] x86:Improve memset with general 64bit instruction | Date | Mon, 07 Apr 2014 09:42:27 -0700 |
| |
ling.ma.program@gmail.com writes:
> From: Ling Ma <ling.ml@alibaba-inc.com> > > In this patch we manage to reduce miss branch prediction by > avoiding using branch instructions and force destination to be aligned > with general 64bit instruction. > Below compared results shows we improve performance up to 1.8x > (We modified test suit from Ondra, send after this patch)
You didn't specify the CPU?
I assume it's some Atom, as nothing else uses these open coded functions anymore?
-Andi
-- ak@linux.intel.com -- Speaking for myself only
| |