GCC 8 Hasn't Been Performing As Fast As It Should For Skylake With "-march=native"

[Michael]

What about Kabylake-R (that's in my laptop)? Is that also very similar to Skylake or does it have more differences?

From the instruction set, still the same.

[xorbe]

I don't know if you caught this from my other thread, but GNU make 4.2.1 is also broken and will degrade to -j1 sometimes. The fix is committed to git.

[andrei_me]

fwiw this issue was found by the Clear Linux team using the Phoronix Test Suite ....

That's a nice success case/testimonial for Phoronix, Michael you should get a formal letter about it, an "approved by Intel" sign haha

[Vistaus]

From the instruction set, still the same.

Thanks.

[DMJC]

Heh as a Kabylake owner I'm feeling pretty ripped off right now, but I wasn't exactly blind to Intel's faltering in performance improvements. Computers have gotten pretty boring recently, with only GPUs and storage having interesting gains in performance/features.