Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

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

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

Thanks for all your answers. Makes me feel even better about the money I spent for my SSD. - Raju -- 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

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

I'm a bit concerned that it's a hard disk problem, but I've checked the disk, tested other build processes using Ant, and don't see a similar effect. -- Raju -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to

Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

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.

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

Raju Bitter rajubit...@googlemail.com writes: 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

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

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

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

On Mon, Jul 16, 2012 at 9:17 PM, Ben Smith-Mannschott bsmith.o...@gmail.com wrote: 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

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

Thanks a lot for your answers. That explains the behavior I'm seeing. - Raju -- 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

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

There are links to older discussions on this topic in the description of ticket CLJ-703: http://dev.clojure.org/jira/browse/CLJ-703 Also proposed patches to Clojure, although I don't know whether some of those may lead to incorrect behavior. Andy On Jul 16, 2012, at 12:48 PM, Raju Bitter

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

In my opinion, on-disk consistency isn't and wasn't a goal. And the spamming of calls to sync does nothing other than make compilation ridiculously slow on file systems that are slow at sync. sync should not have any user visible effects. It just seems to me to be a bit of voodoo code that

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

Hello, Le 16 juil. 2012 à 22:52, David Powell d...@djpowell.net a écrit : In my opinion, on-disk consistency isn't and wasn't a goal. And the spamming of calls to sync does nothing other than make compilation ridiculously slow on file systems that are slow at sync. sync should not have any

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

I'm happy to now be aware of this issue. In amongst other (software, hardware) changes, I migrated a reasonably sized clojure application from 1.2 and 1.3 and compile times ballooned. It took me a while to realise it was a clojure issue. On Jul 17, 6:26 am, Andy Fingerhut

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

Hi, Le 17 juil. 2012 à 01:05, Craig craig.worr...@gmail.com a écrit : I'm happy to now be aware of this issue. In amongst other (software, hardware) changes, I migrated a reasonably sized clojure application from 1.2 and 1.3 The addition of the call to sync() in the compiler predates 1.2

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

Hi, Raju, We often AOT build here and we dropped standard disks a while ago. It brought us down to a build time around 30 seconds before it was several minutes. We have a mix of Clojure and Java code. Would not get back to a standard drive for all the $ in the world. Jar packaging also benefits

Re: Much longer build time for Clojure on HDD vs. SSD (4 min vs 30s)

Le 17 juil. 2012 à 02:04, Softaddicts lprefonta...@softaddicts.ca a écrit : Hi, Raju, We often AOT build here and we dropped standard disks a while ago. It brought us down to a build time around 30 seconds before it was several minutes. We have a mix of Clojure and Java code. Would not