Are the numbers in the second table correct? For 2, 4, 8 and 16 threads it shows a speedup for 0.1% failures vs 0% failures. For 2, 4, and 8 threads it also sho

Are the numbers in the second table correct? For 2, 4, 8 and 16 threads it shows a speedup for 0.1% failures vs 0% failures. For 2, 4, and 8 threads it also shows a speedup for 1% failures vs 0% failures. That speedup isn’t small. The largest one is for 8 threads, 0.1% vs 0%: 32 vs 64, so occasionally throwing exceptions seems to double the speed of that micro-benchmark. Is there so much noise in that data? If not, what could cause this?