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Code alignment issues. | Denis Bakhvalov | C++ enthusiast.
As you can see, even with such a small amount of code things may get incredibly complicated. I’m not saying we all should be experts in the hardware we are coding for, but at least be informed about such issues. Don’t take the first measured value as a final one. Collect profiles and check that you didn’t hit some architectural performance hit.
DenisBakhvalov  CPU  Performance  Intel  blog  Memory  MemoryAlignment 
6 hours ago by dlb

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