Here: http://gist.github.com/82352
I have posted memory and cpu profiling figures. On Mar 20, 6:56 am, Christophe Grand <christo...@cgrand.net> wrote: > Hello Vincent, > > Vincent Foley a écrit : > > > Hello, > > > For the past few days, I've been trying, unsuccessfully, to make an > > application I wrote faster. A Java program that performs, more or > > less, the same task takes 12 seconds (on my machine) to parse 1000 > > files; my Clojure program takes nearly 3 minutes. This more than an > > order of magnitude slower! Using the profiling tools available with > > the JVM, I quickly determined which function was the costliest. I > > copied it into a simple script file to profile it in isolation. I > > have made the script and the profile results (long!) available at this > > URL:http://gist.github.com/82136 > > On my box nearly one half of the total time is sepent in the building of > arr (and by looking at your profiling data a good chunk of these traces > are related to this map call). > Better to get it out of the loop. > > (let [arr (into-array Byte/TYPE (map byte [7 ; 1 Byte > 3 0 97 0 98 0 99 ; 3 Shorts > 0 0 100 100 ; 1 Integer > 65 66 67 68 69 70 71 72 73 74 > ; 10 String > 0 0 0 0 0 0 0 0 0 0 ; 10 ignored > ])) > buf (ByteBuffer/wrap arr)] > (time > (dotimes [_ 10000] > (.position buf 0) > (run buf)))) > > Can you give the profile results for this code? > > Christophe > > -- > Professional:http://cgrand.net/(fr) > On Clojure:http://clj-me.blogspot.com/(en) --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
