Hi, I have a web service returning edn representations containing many java.util.Date values. Using a profiler, one Hot Spot is inside the clojure.instant/print-date function. The relevant reflections warnings are:
Reflection warning, instant.clj<https://github.com/clojure/clojure/blob/master/src/clj/clojure/instant.clj>:172:20 - reference to field get can't be resolved. Reflection warning, instant.clj:174:15 - call to format can't be resolved. Reflection warning, instant.clj:174:5 - call to write can't be resolved. Adding a ^ThreadLocal annotation to thread-local-utc-date-format and a ^java.text.DateFormat to utc-format resolves all reflection warnings. I tested the speedup with (time (let [d (java.util.Date.)] (doseq [_ (range 100000)] (pr-str d)))) which takes about 1500 ms without the type annotations and about 500 ms with type annotations. A single web service access is speeded up from about 350 ms to 250 ms. The response contains about 3000 java.util.Date values. I could create a pull request if that would help. But I like to discuss the change first. I have no CA so I use Clojure instead of Clojure Dev. Alex -- -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.