5 ms·

This doesn't answer the author's question. We know the difference between performance and scalability. How does it perform compared to Java?

saosebastiao 13y ago
It is slower than java. It can approach Java with type annotations which aren't that hard to do. It is faster than any other dynamic language I have used, including python, ruby, javascript(v8), and lua(jit).
- graue 13y ago
  Faster than LuaJIT? At what? Did you run benchmarks to back that up? That's a very strong claim, and I've never heard anyone make it before. LuaJIT is unbelievably fast. I'd be extremely curious to see the proof. (As a side note, on some level it's hard for me to accept that Clojure is fast because using it feels gratingly slow — since all the tools take several seconds to do anything thanks to the JVM's startup time. `lein repl`: 4 seconds wait. `luajit`, or `python` for that matter: utterly instant.)
  - saosebastiao 13y ago
    No benchmarks, just a few small algorithm implementations (kmeans, random forest, ff neural net). Clojure was faster, although the difference was pretty trivial. I have been frustrated with Clojure lately because of startup time (I do a lot of CLI tools), and would love to use Luajit, but my coworkers hate when I write in languages other than Ruby or Clojure. For my own pet projects it is great.
    - graue 13y ago
      Well that's pretty darn cool to hear that Clojure can achieve LuaJIT's level of speed. But I agree, I feel Clojure just isn't suited for CLI tools at all, unfortunately. I know there are solutions that keep a background JVM ready and reuse it but I've never managed to get that to work smoothly.
Mikeb85 13y ago
How does Java compare to C or Fortran? And how much does it matter? Ruby and Python are incredibly popular despite being incredibly slow. Clojure has decent enough performance, plus easy parallelism/concurrency...

saosebastiao 13y ago

It is slower than java. It can approach Java with type annotations which aren't that hard to do. It is faster than any other dynamic language I have used, including python, ruby, javascript(v8), and lua(jit).

graue 13y ago
Faster than LuaJIT? At what? Did you run benchmarks to back that up? That's a very strong claim, and I've never heard anyone make it before. LuaJIT is unbelievably fast. I'd be extremely curious to see the proof. (As a side note, on some level it's hard for me to accept that Clojure is fast because using it feels gratingly slow — since all the tools take several seconds to do anything thanks to the JVM's startup time. `lein repl`: 4 seconds wait. `luajit`, or `python` for that matter: utterly instant.)
- saosebastiao 13y ago
  No benchmarks, just a few small algorithm implementations (kmeans, random forest, ff neural net). Clojure was faster, although the difference was pretty trivial. I have been frustrated with Clojure lately because of startup time (I do a lot of CLI tools), and would love to use Luajit, but my coworkers hate when I write in languages other than Ruby or Clojure. For my own pet projects it is great.
  - graue 13y ago
    Well that's pretty darn cool to hear that Clojure can achieve LuaJIT's level of speed. But I agree, I feel Clojure just isn't suited for CLI tools at all, unfortunately. I know there are solutions that keep a background JVM ready and reuse it but I've never managed to get that to work smoothly.

Mikeb85 13y ago

How does Java compare to C or Fortran? And how much does it matter? Ruby and Python are incredibly popular despite being incredibly slow. Clojure has decent enough performance, plus easy parallelism/concurrency...