[Python-Dev] are NULL checks in Objects/abstract.c really needed?

[Michal Vitecek]

Michael Hudson wrote:
>Wow!  Can we persuade you to try CVS HEAD?

 okay - i did as you said and the speed-up is only 2.1% so it's not
 probably worth it. here come the numbers:

 BEFORE:

$ for (( i = 0; i <= 5; i++ )); do ./python Lib/test/pystone.py; done
Pystone(1.1) time for 50000 passes = 1.97
This machine benchmarks at 25380.7 pystones/second
Pystone(1.1) time for 50000 passes = 1.92
This machine benchmarks at 26041.7 pystones/second
Pystone(1.1) time for 50000 passes = 1.96
This machine benchmarks at 25510.2 pystones/second
Pystone(1.1) time for 50000 passes = 1.97
This machine benchmarks at 25380.7 pystones/second
Pystone(1.1) time for 50000 passes = 1.96
This machine benchmarks at 25510.2 pystones/second
Pystone(1.1) time for 50000 passes = 1.96
This machine benchmarks at 25510.2 pystones/second

 AFTER:

$ for (( i = 0; i <= 5; i++ )); do ./python Lib/test/pystone.py; done
Pystone(1.1) time for 50000 passes = 1.95
This machine benchmarks at 25641 pystones/second
Pystone(1.1) time for 50000 passes = 1.93
This machine benchmarks at 25906.7 pystones/second
Pystone(1.1) time for 50000 passes = 1.91
This machine benchmarks at 26178 pystones/second
Pystone(1.1) time for 50000 passes = 1.92
This machine benchmarks at 26041.7 pystones/second
Pystone(1.1) time for 50000 passes = 1.89
This machine benchmarks at 26455 pystones/second
Pystone(1.1) time for 50000 passes = 1.89
This machine benchmarks at 26455 pystones/second

-- 
		fuf		(fuf@mageo.cz)