On Mon, Mar 02, 2020 at 04:55:52PM +0100, Pavel Sanda wrote: > On Mon, Mar 02, 2020 at 09:47:33AM -0500, Scott Kostyshak wrote: > > On Sun, Mar 01, 2020 at 10:00:08PM +0100, Pavel Sanda wrote: > > > On Sun, Mar 01, 2020 at 03:33:13PM -0500, Richard Kimberly Heck wrote: > > > > But my understanding, anyway, is that the intent was to reduce the size > > > > of > > > > includes where possible. André was really big on this for a while. > > > > > > Yeah, overall compilation time was the reason. > > > > Thanks for the explanations, Riki and Pavel. That makes sense. string.h > > is 18k here as well. I had no idea it was that beefy. > > Also my guess is that stl headers are heavily templated which would make it > also slower to compile... > > Very long time ago I made benchmarks in which full compile time would take > ~9 mins and monolithic build avoiding recompiling includes for each cpp file > would be ~5mins (all on a single core).
That is indeed a big difference. > So in principle avoiding unnecessary includes is worth trying I think we made progress this at some point at https://www.lyx.org/trac/ticket/6305 > though it's not > straightforward to translate the results above into this situation. Simple > experiment would be to include string header into each cpp file and see the > difference in recompilation of the whole tree... I'll pass on that exercise for now, but thanks for the explanations. Scott
signature.asc
Description: PGP signature
-- lyx-devel mailing list lyx-devel@lists.lyx.org http://lists.lyx.org/mailman/listinfo/lyx-devel
