https://bugs.kde.org/show_bug.cgi?id=490651
--- Comment #9 from Mark Wielaard <m...@klomp.org> --- Here are the timings on two of my machines (all on fresh checkouts) = Intel Core i7-10850H ./autogen.sh && ./configure && time make -j8 real 0m3.100s user 0m5.273s sys 0m4.253s ./autogen.sh && ./configure --enable-lto && time make -j8 real 3m37.978s user 25m41.657s sys 1m26.144s ./autogen.sh && ./configure --enable-lto CFLAGS="-flto-partition=one" && time make -j8 real 9m0.954s user 16m13.692s sys 0m37.233s = Intel Core i9-9900 ./autogen.sh && ./configure && time make -j12 real 0m1.522s user 0m1.930s sys 0m1.142s ./autogen.sh && ./configure --enable-lto && time make -j12 real 1m58.869s user 20m19.670s sys 1m3.180s ./autogen.sh && ./configure --enable-lto CFLAGS="-flto-partition=one" && time make -j12 real 7m8.945s user 14m1.536s sys 0m33.254s The (default) lto builds are ~70 times slower than none-lto builds. And the -flto-partition=one builds are again about ~3 times slower than the default lto builds. It is definitely noticeable for me. And I have seen much longer build times on some non-x86_64 arches. -- You are receiving this mail because: You are watching all bug changes.
