http://bugzilla.opensuse.org/show_bug.cgi?id=1155207

Bug ID: 1155207 Summary: systemctl command line completion is very slow Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.1 Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Basesystem Assignee: bnc-team-screening@forge.provo.novell.com Reporter: carlos.e.r@opensuse.org QA Contact: qa-bugs@suse.de Found By: --- Blocker: ---

systemctl command line completion is very slow

Suppose I type:

systemctl status smart[tab][tab]

and I get nothing. One second, two seconds... so I insist and hit tab several times, and after several seconds I get (one line per second):

Isengard:~ # systemctl status smart smartcard.target smartd.service smartd_generate_opts.path smartd_generate_opts.service Isengard:~ # systemctl status smart smartcard.target smartd.service smartd_generate_opts.path smartd_generate_opts.service Isengard:~ # systemctl status smart smartcard.target smartd.service smartd_generate_opts.path smartd_generate_opts.service Isengard:~ # systemctl status smart

and then I can type "d" and enter.

Why is it that slow? It is an M2 disk. ie, SSD technology. It responds instantly when completing a normal command:

Isengard:~ # smart smart_agetty smartctl smartd Isengard:~ # smart

And that system is not busy at all, load 0.20. I can replicate the issue on other machines, and has been so probably for a year or so. Google "systemctl completion slow" finds reports on other distributions and several media.

https://bugzilla.redhat.com/show_bug.cgi?id=1491668 https://bugs.launchpad.net/ubuntu/+source/bash-completion/+bug/1471723

and: https://github.com/systemd/systemd/issues/7185