Hi, once in a while I get annoyed at how slow bash is to startup; using a tiling wm poping a new shell is supposed to be quite fast but I'm staring at a new empty window for ~1s everytime and it gets annoying... According to https://xkcd.com/1205/ wasting 1s 50+ times a day is worth spending some time to try to improve it so let's see what we can do :) Here's the baseline on my machine: $ time bash -l < /dev/null real 0m0.341s user 0m0.198s sys 0m0.146s And a few low hanging fruits I could find adding `-x 2>&1 | ts "%.s"`: - down to 0.288s after removing /etc/profile.d/flatpak.sh (flatpak-1.6.3-1.fc32.x86_64) - down to 0.225s after removing /etc/profile.d/modules.sh (environment-modules-4.4.1-2.fc32.x86_64) - down to 0.130s after moving /etc/bash_completion.d/* to /usr/share/bash-completion/completions/ This one is not actually a no-op: bash-completion loads things from /etc at shell startup time, but things in /usr at first tab time, so if the file in /usr/share is not named by the same prefix as the command it help completes it won't work anymore, but in most case here it will still work just the same (slightly slower on first use) Here's the list of files I had in there and their packages: authselect-completion.sh authselect-1.2.1-1.fc32.x86_64 fcoeadm fcoe-utils-1.0.32-9.git9834b34.fc31.x86_64 javaws.bash icedtea-web-2.0.0-pre.0.2.alpha13.patched1.fc32.x86_64 perf perf-5.6.7-300.fc32.x86_64 trace-cmd.bash trace-cmd-2.8.3-1.fc32.x86_64 bpftool bpftool-5.6.7-300.fc32.x86_64 fcoemon fcoe-utils-1.0.32-9.git9834b34.fc31.x86_64 policyeditor.bash icedtea-web-2.0.0-pre.0.2.alpha13.patched1.fc32.x86_64 xl.sh xen-runtime-4.13.0-7.fc32.x86_64 cargo cargo-1.43.1-1.fc32.x86_64 fzf fzf-0.21.1-1.fc32.x86_64 lilv lilv-0.24.6-2.fc32.x86_64 python-argcomplete.sh python3-argcomplete-1.10.0-4.fc32.noarch dbus-bash-completion.sh dbus-glib-devel-0.110-7.fc32.x86_64 gluster glusterfs-cli-7.5-1.fc32.x86_64 lldpad lldpad-1.0.1-16.git036e314.fc32.x86_64 redefine_filedir bash-completion-2.8-8.fc32.noarch dog sheepdog-1.0.1-10.fc31.x86_64 itweb-settings.bash icedtea-web-2.0.0-pre.0.2.alpha13.patched1.fc32.x86_64 lldptool lldpad-1.0.1-16.git036e314.fc32.x86_64 torsocks torsocks-2.3.0-5.fc32.x86_64 341 to 130ms is a good start I guess, the rest of the waiting time probably now outweights bash and will get some looking at at a later point, but might as well start somewhere. How should I go about with that? Open bz bugs to all the packages I listed? strongly suggesting to get things to move to /usr/share (17) and flatpak (suggest some kind of cache? not sure they'll be interested...) and environment-modules (not sure what to suggest there, I only have environment-modules because I need to test something with openmpi from time to time and it comes with it...) It might also make sense to have a packaging guideline suggesting to avoid /etc/bash_completion.d in favor of the /usr/share variant, I couldn't find anything here[1] but I might not have looked thoroughly enough... [1] https://docs.fedoraproject.org/en-US/packaging-guidelines/ Would anyone be willing to help, something is telling me that doing this alone would take more time than what I'd save in the end, but a few people considering it'll help everyone might be ;) Thanks! -- Dominique _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
