Re: Ready for Guile 2.2!

[Andy Wingo]

On Thu 20 Apr 2017 14:35, address@hidden (Ludovic Courtès) writes:

> address@hidden (Ludovic Courtès) skribis:
>
>> ;; 2.724686s real time, 3.117062s run time.  0.880827s spent in GC.
>> scheme@(guile-user)> (version)
>> $1 = "2.0.13"
>>
> scheme@(guile-user)> ,use(guix scripts build)
> scheme@(guile-user)> ,time (guix-build "libreoffice" "certbot" "xmonad" "-n" 
> "--no-substitutes" "--no-build-hook")
>
> [...]
>
> ;; 1.826528s real time, 1.994426s run time.  0.382750s spent in GC.
> scheme@(guile-user)> (version)
> $1 = "2.2.1"
>
> That’s a 33% speedup compared to 2.0.

That is a 50% speedup compared to 2.0 :)  If we consider its speed as
being how many times you could do this per second, then 2.0 speed is
1/2.72, and 2.2.1 speed is 1/1.82.  Speed ratio is then
2.72/1.82=1.4945.  So 2.2.1 is 1.5x the speed of 2.0, or 50% faster :)

Andy, who is not looking for praise, but who likes perf numbers :)