[Bug 1875190] Re: Apt update takes around a full minute to read state information when I run it for the first time since boot even though there are no updates available.

[Julian Andres Klode]

I'm not aware of any performance issues in those parts of apt, and spent
a considerable time optimizing it.

You probably want to strace or gdb apt when it's hanging and figure out
where the issue is, because there's nothing that can be done here by
anyone else so far.

** Changed in: apt (Ubuntu)
       Status: New => Incomplete

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Title:
  Apt update takes around a full minute to read state information when I
  run it for the first time since boot even though there are no updates
  available.

Status in apt package in Ubuntu:
  Incomplete

Bug description:
  When I ran "sudo apt update && sudo apt dist-upgrade", apt hit all the
  repositories. However, when it was reading state information, that
  process took a full minute even though there were no new updates.

  This is too slow, even though the subsequent time I ran the command,
  it was much faster. No, this was not the first time I ever ran the
  command on the current install, as I ran it the day before without
  reinstalling Ubuntu, on Ubuntu 20.04, and the process took less than
  15 seconds.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: apt 2.0.2
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Apr 26 11:42:21 2020
  InstallationDate: Installed on 2020-04-25 (1 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-04-25 (1 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  Package: apt 2.0.2
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Tags:  focal
  Uname: Linux 5.4.0-26-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True

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