And just creation is about 3x faster: (report (timings 1e7 (do (volatile! 42) nil) (do (atom 42) nil)))
; | :expr | :time | :ratio | :perc | ; |-------------------------+-----------+--------+-------| ; | (do (volatile! 42) nil) | 22.849963 | 1.0 | 31.63 | ; | (do (atom 42) nil) | 72.237439 | 3.16 | 100.0 | On Thursday, September 11, 2014 11:06:44 AM UTC+2, Frantisek Sodomka wrote: > > 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.