Python-3.13 is more than 100% slower with –disable-gil
Python-3.13.0b3 is over 100% slower with --disable-gil compared to --enable-gil.Benchmark: sum = 0.0 def f(): global sum for i in range(10000): for j in range(10000): sum += i*j return sum print(f()) Build A: ./configure --enable-gil: 8 secondsBuild B: ./configure --disable-gil: 20 seconds