>perl -v

This is perl, v5.10.0 built for MSWin32-x86-multi-thread
[snip]
Binary build 1004 [287188] provided by ActiveState http://www.ActiveState.com
Built Sep  3 2008 13:16:37
[snip]

>perl -MBenchmark -lwe "my$x=q//; print timestr(timeit(eval($ARGV[0]),sub{$x .= (q/x/ x 1000);}));" 10_000
64 wallclock secs (37.05 usr + 25.88 sys = 62.92 CPU) @ 158.93/s (n=10000)