[Bug 1471723] Re: systemctl completion is slow

[halfgaar]

It gets worse. On one particular server, 'journalctl -u <tab>' takes an
infinite amount of time. 'journalctl -F _SYSTEMD_UNIT' prints out lines
like this forever:

session-1033145.scope
session-1033143.scope
session-1033140.scope
session-1033138.scope
session-1033136.scope

See it in action:

https://files.halfgaar.net/permanent/2022-07/20220720_1016_journalctl_tab_hang_launchpad_1471723.mp4

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https://bugs.launchpad.net/bugs/1471723

Title:
  systemctl completion is slow

Status in bash-completion package in Ubuntu:
  Confirmed

Bug description:
  Every time I'm trying to autocomplete some service name for systemctl
  command it takes up to 5 seconds to do it.

  AFAIU the file is /usr/share/bash-completion/completions/systemctl but
  I haven't read it yet.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: bash-completion 1:2.1-4ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-21.21-generic 3.19.8
  Uname: Linux 3.19.0-21-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Mon Jul  6 12:33:40 2015
  PackageArchitecture: all
  SourcePackage: bash-completion
  UpgradeStatus: No upgrade log present (probably fresh install)

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