On: Crystal in Production: Diploid

[cutler]

Crystal is currently no faster than Ruby when parsing a 19Mb Apache log file on OS X Sierra:

  fh = File.open("logs1.txt")
  fh.each_line {|x| puts x if (/\b\w{15}\b/.match x) }
  fh.close

[theodorton → cutler]

I guess it depends, for one-off tasks you'll have to compile and run the Crystal code. I assume you ran the code above with `crystal run`. If you first compile the code with `crystal build --release` and run it, you should see a dramatic improvement over Ruby.

On my machine, parsing a 374MB file took:

    - 25.63 using Ruby
    - 19.97 using Crystal (run w/o optimizations)
    - 19.01 using Crystal (compiled w/o optimizations)
    - 18.68 using Crystal (run w/ `--release` flag)
    - 11.54 using Crystal (compiled w/ `--release` flag)

[cutler → theodorton]

No, it was compiled but without --release as I couldn't get it working on OS X Sierra.

[djur → cutler]

This isn't a benchmark that I'd expect to see a significant difference in. The majority of the CPU work is in the regular expression, and Ruby's regex engine is implemented in C.