This is on an 270 MHz IP-27 (alternatively R12000--I'm not sure which label means more), using Perl 5.004_04.
A = 10 B = 1000000
Benchmark: timing 10 iterations of 1 Nothing , 2 Mult , 3 Array
+ , 4 Hash , 5 Sub (Ref), 6 Sub (Val)...
1 Nothing : 30 secs (28.53 usr 0.03 sys = 28.56 cpu)
2 Mult : 63 secs (49.93 usr 0.07 sys = 50.00 cpu)
3 Array : 42 secs (37.05 usr 0.04 sys = 37.09 cpu)
4 Hash : 99 secs (95.28 usr 0.09 sys = 95.37 cpu)
5 Sub (Ref): 127 secs (117.77 usr 0.09 sys = 117.86 cpu)
6 Sub (Val): 98 secs (93.28 usr 0.11 sys = 93.39 cpu)
Edit: fixed careless markup (sorry)
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