For what it's worth, I was able to reproduce the results. Evaluation took: 5.930 seconds of real time 5.923203 seconds of total run time (5.916811 us

For what it's worth, I was able to reproduce the results. Evaluation took: 5.930 seconds of real time 5.923203 seconds of total run time (5.916811 user, 0.006392 system) 99.88% CPU 13,045,070,068 processor cycles 2,392,064 bytes consed Evaluation took: 0.014 seconds of real time 0.014117 seconds of total run time (0.014106 user, 0.000011 system) 100.00% CPU 31,060,638 processor cycles 3,571,712 bytes consed The first para is for lists, the second for slists.