On Fri, Sep 21, 2012 at 4:06 AM, Douglas McCarroll <list.apache-flex....@brightworks.com> wrote: >> How do you configure FB 4.7 64 bit to use 5GB of memory? > > I edit the FlashBuilder.ini file. This file lives in the same directory as > FlashBuilder.exe. > > I edit these two line like this: > > -Xms5120m > -Xmx5120m
Just make sure that you use the 64 bit version, if you set the heap size to that value, For the 32bit version, the JVM has a limit of 4GB in general, but less on some operating systems (like Windows): http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#gc_heap_32bit
