>>395
そもそも何で10兆回も反復させる必要が?
一秒当たりの実行回数を測れれば充分じゃない?

http://search.cpan.org/~nwclark/perl-5.8.8/lib/Benchmark.pm
> The COUNT can be zero or negative: this means the minimum
> number of CPU seconds to run. A zero signifies the default of
> 3 seconds. For example to run at least for 10 seconds:
>
>　　timethis(-10, $code)