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What about the JVM is such a downer?

• sigzero 14y ago
  Nothing really. I think it is just a preference thing. If I don't have to install Java then that is one less thing to install I guess.
  • autodidakto 14y ago
    Even though OSX Mountain Lion makes it simple to install Java (click yes on first use), it's one less OS that comes with it preinstalled. Also, the slower startup time of the JVM affects clojure apps and makes simple command line scripts in clojure less attractive
    • ruggeri 14y ago
      This is not exactly true. The JVM startup time is not what makes Clojure slow to load; it's the startup of Clojure itself. ~$ time clj test.clj Hello world! real 0m1.337s user 0m1.309s sys 0m0.172s ~$ time java Test Hello world! real 0m0.142s user 0m0.116s sys 0m0.030s You may want to look at the -XX:+TieredCompilation -Xbootclasspath flags. They reduced the clojure startup significantly for me.
• pivo 14y ago
  The only downers I care about are stack traces in "Java" rather than Clojure and the lack of TCO in the JVM. I think there's some work going on to address the former. The latter issue isn't really that bad unless you need to use trampoline, which I don't care for because it means the functions have to be written to know they'll be used in this way. Regardless, Clojure is one of my favorite languages.