On 2017.04.09 at 20:23 +0200, Richard Biener wrote: > On Sun, Apr 9, 2017 at 4:41 PM, Markus Trippelsdorf > <mar...@trippelsdorf.de> wrote: > > The minimum size heuristic for the garbage collector's heap, before it > > starts collecting, was last updated over ten years ago. > > It currently has a hard upper limit of 128MB. > > This is too low for current machines where 8GB of RAM is normal. > > So, it seems to me, a new upper bound of 1GB would be appropriate. > > > > Compile times of large C++ projects improve by over 10% due to this > > change. > > How does memory use change?
It increases e.g. 25% on tramp3d-v4.cpp when increasing ggc-min-heapsize from 131072 (default) to 524288. -- Markus
