On Mon, Jul 16, 2012 at 5:21 PM, Raju Bitter <rajubit...@googlemail.com> wrote: > I've checked out the Clojure source code, and build the JAR using the > Ant command. I'm seeing a strange effect, where the compile time on my > normal hard disk takes almost 4 min (with most the time being spent in > the "compile-clojure" task, and doing the same build process on my SSD > taking 30-35s. > > I've never seen any similar behavior on my machine, normally build > processes take 10% more when they run on the HDD vs. the SSD. Has > anyone else experienced the same effect? How long does it take to run > the "ant build" on your machines? > > Thanks, > Raju
I believe this is related to an oddity of the clojure compiler: it syncs every time it writes a class file to disk. This appears to be necessary for reasons that escape me. (One might naively assume that a simple flush() would be enough; but that was not so when I stumbled across this myself a year or so ago.) In any event, it does not surprise me in the least that a storm of sync calls would cause a mechanical hard disk to grovel a bit, while presenting -- 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
