Emerge times
To demystify the notion that it still takes hours to compile something in Gentoo, I leave here the times of the packages that take the most time on my machine.
Environment
# Intel(R) Core(TM) i5-8600K CPU @ 3.60GHz
CFLAGS="-O2 -pipe -march=native"
MAKEOPTS="-j7"
EMERGE_DEFAULT_OPTS="--jobs=1 --quiet-build"
Using gcc 10.2.0, and the times are calculated with the script mergetime, which only accounts for the real compile times given by the log, and not for time spent by the package manager in other tasks like downloading and extracting archives.
Times
| Package | Version | Time |
|---|---|---|
| dev-lang/rust | 1.47.0-r2 | 58m 26s |
| app-office/libreoffice | 6.4.7.2 | 47m 22s |
| www-client/firefox | 88.0 | 36m 54s |
| sys-devel/clang | 11.1.0 | 36m 46s |
| sys-devel/gcc | 10.2.0-r5 | 33m 13s |
| sys-devel/llvm | 11.1.0 | 32m 16s |
| dev-qt/qtwebkit | 5.212.0_pre20200309-r1 | 23m 14s |
| dev-lang/mono | 6.6.0.161 | 19m 17s |
| net-libs/nodejs | 14.16.1 | 14m 10s |
| app-emulation/wine-vanilla | 6.0 | 12m 18s |
| net-fs/samba | 4.12.9-r1 | 9m 19s |
| dev-python/PyQt5 | 5.15.2 | 5m 44s |
| dev-qt/qtdeclarative | 5.15.2 | 5m 42s |
| dev-libs/boost | 1.75.0 | 4m 58s |
| sys-libs/glibc | 2.32-r7 | 4m 44s |
| Data file | link |
|---|---|
| Full rebuild time | 11h 55m 59s |
| Packages installed | 1486 |
| Packages compiled in 10 seconds or less | 961 - 64.67% |
| Packages compiled in 1 minute or less | 1397 - 94.01% |
| Packages compiled in 5 minutes or less | 1471 - 98.99% |