How about fully decoupling the hook and the check? Like letting /usr/lib/update-notifier/update-motd-updates-available only do the post-apt processing if a check "is needed" and then touch a stamp or similar. That would give apt the fast path we want to have.
Independently we could then have something that regularly checks if the stamp exists or changed - and if so run the actual "/usr/lib/update- notifier/apt-check --human-readable" to output to "/var/lib/update- notifier/updates-available" which is what motd will later consume. I think nowadays we can do better than "check every x minutes" like thtough systemd https://www.freedesktop.org/software/systemd/man/systemd.path.html. Imagine (untested suggestion) instead of writing to: /usr/lib/update-notifier/update-motd-updates-available it would only write the output of `date` to: /usr/lib/update-notifier/update-motd-updates-available-needcheck Then we could have: $ cat /etc/systemd/system/update-motd-updates-available.service [Unit] Description=Update list of available updates for update-notifier After=network.target [Service] Type=oneshot ExecStart=/usr/lib/update-notifier/apt-check --human-readable StandardOutput=file:/usr/lib/update-notifier/update-motd-updates-available $ cat /etc/systemd/system/update-motd-updates-available.path [Path] PathModified=/usr/lib/update-notifier/update-motd-updates-available-needcheck [Install] WantedBy=multi-user.target I'd hope that this would achieve a) apt transactions being fast b) the info of available packages will be updated immediately c) the old issues of 1527710 were around mount/chroot/umount and similar. In those the service would not run -> no conflict d) since there is no direct child process other old issues e.g. preseeding should also not be affected anymore Opinions? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1936175 Title: apt hook slows down apt - could this be asynchronous? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/1936175/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
