On Wed, Feb 5, 2020 at 5:23 PM Ludovic Courtès <l...@gnu.org> wrote:
> Weird. It would be interesting to see where the slowdown comes from. > Overall, my recollection of the 1.8 to 2.0 transition (where we > introduced libgc) is that GC was a bit faster, definitely not slower. > > That said, does LilyPond happen to use lots of bignums and/or lots of > finalizers? Finalizers, including those on bignums, end up being very > GC-intensive, as discussed in my recent message. Perhaps that’s what’s > happening here, for instance if you create lots of SMOBs with a free > function. > No, I think it's because in some phases of the program, there is a lot of heap growth, with little garbage generation. This causes frequent (expensive) GCs that don't reclaim anything. -- Han-Wen Nienhuys - hanw...@gmail.com - http://www.xs4all.nl/~hanwen
