Hey everyone!, I know this is an old story.
I've played with clojure, but the main thing that has kept me from never looking back is the startup speed. "Hello world!" in Java takes me .303s, but just "java -cp clojure-1.5.0-master-SNAPSHOT.jar" takes 1.989s (sending C-d to close the repl even before it starts). Searching around here, I've found -XX:+TieredCompilation knocks me down to 1.581s and also -Xbootclasspath/a:clojure-1.5.0-master-SNAPSHOT.jar all the way to 0.938s. Incidentally, the same tricks with "Hello World" take me to 0.159s. Those were major improvements with very little cost; a huge win (thanks clojure list!). Any further easy tips and tricks? I'd like to get to the point where shell scripts aren't painful. It looks like other major hints are nailgun, and never restarting the repl during development. I took the liberty of printing some System.getCurrentMillis from clojure.main. It looks like it takes me 0.666s to enter the clojure.main main method, which I didn't entirely expect. There are several static members of clojure.main that need to be initialized, these members take ~.520s to initialize in total; almost all of this is initializing `Var REQUIRE`. Presumably this is when most of the clojure environment starts to get loaded? I'm just starting to look into clojure's jvm implementation; does anyone have some pointers on how to get quickly up to speed with the internals of clojure? Thanks!, -- Ned Ruggeri -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
