Hi Efraim, Efraim Flashner <efr...@flashner.co.il> skribis:
> While rebuilding glibc-final on aarch64 I realized that the 'strip phase > took 235 seconds. The relevant code for 'strip from gnu-build-system is > in guix/build/gnu-build-system.scm, starting at line 340, with the > actual stripping starting at 398. When I changed 'for-each' to > 'par-for-each' the time dropped from 235 seconds to 215, about an 8.5% > savings. I'm pretty sure most of that time was spent failing to strip > certain files, but it is still a savings. Is it on a spinning hard disk or an SSD? My guess is that most of the time is I/O, and that parallelizing doesn’t buy us much (indeed, 8.5% is not that much, far from a linear speedup.) So I’m mildly reluctant to parallelizing this particular piece of code. Thanks, Ludo’.
