Re: why benchmarks need salt

[Dirk Laurie <dirk.laurie@...>]

2015-07-20 18:00 GMT+02:00 Roberto Ierusalimschy <roberto@inf.puc-rio.br>:

> Now, see how the times change with the name of the executable:
>
> roberto@arraial:~/prj/lua$ lua temp
> 0.91
> roberto@arraial:~/prj/lua$ lua temp
> 0.91
> roberto@arraial:~/prj/lua$ mv lua lua1
> roberto@arraial:~/prj/lua$ lua1 temp
> 0.57
> roberto@arraial:~/prj/lua$ lua1 temp
> 0.57
> roberto@arraial:~/prj/lua$ mv lua1 sol
> roberto@arraial:~/prj/lua$ sol temp
> 0.91
> roberto@arraial:~/prj/lua$ sol temp
> 0.91
> roberto@arraial:~/prj/lua$ mv sol sol1
> roberto@arraial:~/prj/lua$ sol1 temp
> 0.57
> roberto@arraial:~/prj/lua$ sol1 temp
> 0.58

Is this on your old Pentium? I can't reproduce the phenomenon on
a one-year old desktop.