我有两个脚本，每个脚本都计算一个数字的阶乘。我想知道哪个更快。该time命令给我毫秒，结果不时不同：
piousbox@piousbox-laptop:~/projects/trash$ time ruby fac2.rb
30414093201713378043612608166064768844377641568960512000000000000
real 0m0.089s
user 0m0.052s
sys 0m0.028s
piousbox@piousbox-laptop:~/projects/trash$ time ruby fac1.rb
30414093201713378043612608166064768844377641568960512000000000000
real 0m0.091s
user 0m0.048s
sys 0m0.036s
piousbox@piousbox-laptop:~/projects/trash$ time ruby fac1.rb
30414093201713378043612608166064768844377641568960512000000000000
real 0m0.088s
user 0m0.048s
sys 0m0.040s
piousbox@piousbox-laptop:~/projects/trash$ time ruby fac2.rb
30414093201713378043612608166064768844377641568960512000000000000
real 0m0.088s
user 0m0.048s
sys 0m0.028s
piousbox@piousbox-laptop:~/projects/trash$ time ruby fac1.rb
30414093201713378043612608166064768844377641568960512000000000000
real 0m0.087s
user 0m0.064s
sys 0m0.028s
piousbox@piousbox-laptop:~/projects/trash$ time ruby fac2.rb
30414093201713378043612608166064768844377641568960512000000000000
real 0m0.089s
user 0m0.068s
sys 0m0.016s
piousbox@piousbox-laptop:~/projects/trash$
我如何计算运行脚本所需的平均时间？我可以解析和平均 100 的输出，time但我想有更好的解决方案吗？
linux ×1