Using my timings macro: https://gist.github.com/fsodomka/5890711
I am getting that: - creation & derefing is 60% faster - swapping is 25% faster - resetting is about the same ;;;;;;;;;; volatile vs. atom ;;;;;;;;;; (report (timings 1e7 (deref (volatile! 42)) (deref (atom 42)))) ; | :expr | :time | :ratio | :perc | ; |------------------------+-----------+--------+-------| ; | (deref (volatile! 42)) | 30.688238 | 1.0 | 39.81 | ; | (deref (atom 42)) | 77.081141 | 2.51 | 100.0 | (report (let [v (volatile! 42) a (atom 42)] (timings 1e7 (vswap! v inc) (swap! a inc)))) ; | :expr | :time | :ratio | :perc | ; |----------------+------------+--------+-------| ; | (vswap! v inc) | 136.052946 | 1.0 | 75.08 | ; | (swap! a inc) | 181.218748 | 1.33 | 100.0 | (report (let [v (volatile! 42) a (atom 42)] (timings 1e7 (vreset! v 10) (reset! a 10)))) ; | :expr | :time | :ratio | :perc | ; |----------------+-----------+--------+-------| ; | (reset! a 10) | 98.755318 | 1.0 | 96.69 | ; | (vreset! v 10) | 102.13944 | 1.03 | 100.0 | On Thursday, September 11, 2014 6:18:08 AM UTC+2, puzzler wrote: > > I'm curious: how much faster are volatiles than atoms? > > -- 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/d/optout.