Maxim Cournoyer <[email protected]> skribis: > Lars-Dominik Braun <[email protected]> writes: > >> Hi Maxim, >> >>> Judging from the above, it seems this issue has been resolved. >> grafting is still a performance issue imo. Compare for example: >> >> $ time guix environment --ad-hoc --search-paths r-learnr >> guix environment --ad-hoc --search-paths r-learnr 5,90s user 0,09s system >> 210% cpu 2,844 total >> $ time guix environment --ad-hoc --search-paths r-learnr --no-grafts >> guix environment --ad-hoc --search-paths r-learnr --no-grafts 2,03s user >> 0,08s system 164% cpu 1,277 total > > I'm opening a new issue to track optimizing the grafting code, since > it's independent of environments (grafts are applied anytime a > derivation is built, AFAICT). Grafting is inherently IO-bound,
What is slow above is not grafting itself: it’s determining what to graft that takes CPU time. I had reopened the initial bug at <https://issues.guix.gnu.org/41702>; should we close this one? Thanks, Ludo’.
