# Generating Code, too slow! **URL:** \ **Category:** General JUCE discussion\ **Created:** [November 21, 2008, 11:30am UTC](https://forum.juce.com/t/generating-code-too-slow/3383 "2008-11-21T11:30:48Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![jayman](https://avatars.discourse-cdn.com/v4/letter/j/b5e925/32.png) [@jayman](https://forum.juce.com/u/jayman)\ **Post date:** [November 21, 2008, 11:30am UTC](https://forum.juce.com/t/generating-code-too-slow/3383/1 "2008-11-21T11:30:48Z")
I’m using Visual C++ 2005 Express, when building my projects why is Generating Code take soooo long? I sorta recall seeing somewhere in these forums something about it, but can’t find it…Any ideas? Thanks… ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [November 21, 2008, 1:58pm UTC](https://forum.juce.com/t/generating-code-too-slow/3383/2 "2008-11-21T13:58:29Z")
Because it’s doing a lot of thinking, I guess… It’ll be slower in a release build because it’ll be optimising everything. Or maybe you’ve not got enough memory so it’s doing a lot of paging? ---
**Author:** ![valley](https://avatars.discourse-cdn.com/v4/letter/v/67e7ee/32.png) [@valley](https://forum.juce.com/u/valley)\ **Post date:** [November 21, 2008, 2:08pm UTC](https://forum.juce.com/t/generating-code-too-slow/3383/3 "2008-11-21T14:08:00Z")
> [@jules](#): > > It’ll be slower in a release build because it’ll be optimising everything. I’m finding the opposite. My app takes around 15 minutes to build in debug, and about 12 minutes in release. I put the difference down to the need to build the extra debug information into the app, and the associated debug databases for VC. ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [November 21, 2008, 3:01pm UTC](https://forum.juce.com/t/generating-code-too-slow/3383/4 "2008-11-21T15:01:00Z")
15 minutes?? My PC is very average - an old core duo laptop - but I can build the juce demo from scratch in about a minute, and the code generation takes less than 10 seconds in debug mode. Are you building it on a shared drive or something? There must be some kind of bottleneck going on. ---
**Author:** ![valley](https://avatars.discourse-cdn.com/v4/letter/v/67e7ee/32.png) [@valley](https://forum.juce.com/u/valley)\ **Post date:** [November 21, 2008, 4:20pm UTC](https://forum.juce.com/t/generating-code-too-slow/3383/5 "2008-11-21T16:20:45Z")
I haven’t timed the JUCE demo, but a minute or so sounds about right. I have a handful[1] of recursive includes in my app (a kind of unavoidable side effect of having a deeply integrated interactive scripting language), and that is very costly in terms of compile times. I think, the fundamental though is just that the app is getting a little hefty. I wouldn’t mind but increasingly VC seems unable to incremental builds, so even a few lines of source changed can sometimes trigger a complete rebuild. I’m running VC inside VMWare, but in general performance is still better on my Macbook than on my three year old Vaio. [1] not many, but they probably conspire to (re)pick up a lot of other headers in the progress of looping.