Karlin High <karlinh...@gmail.com> writes: > On 10/11/2018 12:59 PM, David Kastrup wrote: >> we should be able to add code that will run under all versions. > > The guile-devel post linked in the OP indicates that Guile 3 should > have greatly improved performance over Guile 2. Maybe even better than > LilyPond's current Guile 1.8. > > What level of optimism is appropriate for that claim?
Pretty much none I should think. The performance improvements are for algorithms implemented in Scheme. We don't really have them to significant degree: we do the time-consuming algorithmic stuff in C++. What gave us the large performance hit for Guile 2 was the interfacing between C++ and Scheme which we do really a lot. That has become quite slower with Guilev2, and part of the reason are strings which are now utf8-aware while Guilev2 natively does not store strings as utf8 but has to convert them into other presentations. -- David Kastrup _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-devel
