Andrei Alexandrescu, el 3 de agosto a las 19:48 me escribiste: > Leandro Lucarella wrote: > >Walter Bright, el 3 de agosto a las 15:08 me escribiste: > >>bearophile wrote: > >>>At 14.42: You compare the performance of a D compiler with the performance > >>>of > >>>a C++ compiler. But Delphi compiler was/is very fast (and probably the > >>>FreePascal compile too), I have never "waited" for my Delphi (ObjectPascal) > >>>code to compile. I think on average it takes only two thousand clock ticks > >>>to > >>>compile one line of ObjectPascal code. It sounds a lot, but it means that > >>>with a modern single-core CPU you can produce your binary file from a one > >>>million ObjectPascal lines long program in less than two seconds. > >>>ObjectPascal type system looks a bit simpler than D one (despite it has > >>>OOP, > >>>generics, modules, inline asm, dynamic strings, records, all basic D types, > >>>etc), so this isn't a fully apple-to-apple comparison. > >> > >>Some context is in order. The talk was given at Google and aimed at > >>what would be interesting to Googlers. Google uses C++ extensively, > >>and Rob Pike (of Go) listed as a motivator for Go the compile speed > >>problems with C++. Rob made a point of how fast Go compiled code, > >>and Go's compile speed has been praised a lot on Reddit as well. > >> > >>Andrei put together a benchmark that shows that D compiles 4 times faster > >>than Go. > > > >I was surprised by that, can you publish what the benchmark was, and > >what compilers were used? I tried Go when it came out and it felt faster > >than D to compile (which is reasonable because is a much simpler > >language). > > I tested on two laptops (Ubuntu and Mac OSX). I compiled the two > languages' standard libraries by using the provided makefiles, after > touching all .go and all .d files involved. Then I divided the > compilation times by the line counts of *.go/*.d files as wc has > them and compared the results. > > On OSX dmd was 4.3 times faster. On Ubuntu, the ratio was 4.45.
Seems like a very fair benchmark, I'm really surprised. Which Go compiler did you tried, gccgo or gc (6g/8g)? IIRC gccgo is much slower than gc. > I had an online demo prepared for the talk, but I decided to not use it. It would be a good selling point (is not the same hearing than seeing :). -- Leandro Lucarella (AKA luca) http://llucax.com.ar/ ---------------------------------------------------------------------- GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) ---------------------------------------------------------------------- In a world without fences, who need gates?
