[Bug 357268] Re: X01-localapps pathologically slow with many groups

[Launchpad Bug Tracker]

This bug was fixed in the package ltsp - 5.4.6-1ubuntu1

---------------
ltsp (5.4.6-1ubuntu1) trusty; urgency=low

  * Merge from Debian unstable. Remaining changes:
    - Change default color depth from 16bit to 24bit as 16bit just doesn't
      work when using unity with llvmpipe. This is a workaround and
      alternatives should be looked at to get back to 16bit if possible.
    - Add 40-ltsp as 40-ltsp-client and 40-ltsp-server in Xsession.d for both
      ltsp-client-core and ltsp-server. (LP: #987726)
    - Make ltsp-client-builder depend on console-setup-udeb rather than
      kbd-chooser for Ubuntu.
    - Make ltsp-client recommend zram-config
    - Make ltsp-client depend on dbus, dmz-cursor-theme,
      fonts-dejavu-core, fonts-freefont-ttf, fonts-kacst-one,
      fonts-khmeros-core, fonts-lao, fonts-liberation, fonts-nanum,
      fonts-takao-pgothic, fonts-thai-tlwg, language-pack-en, libgl1-mesa-dri,
      plymouth-theme-ubuntu-logo, plymouth-theme-ubuntu-text,
      ttf-indic-fonts-core, ttf-punjabi-fonts, ttf-ubuntu-font-family,
      ttf-wqy-microhei and wget.
    - Make ltsp-client-core depend on busybox-static, udhcpd and usbutils.
    - Ship a distro-specific dhcpd.conf using the good old
      192.168.0.0/24 subnet instead of upstream's default 192.168.67.0/24.
    - Add fat client support to the udeb.
    - Have the udeb detect Ubuntu flavours with only main and restricted.
    - Fix race condition during image compression in udeb.
    - Patch dhcpd.conf on the fly to match current architecture.
    - Create a squashfs image by default and configure network in d-i.
    - Install ltsp-cluster.
    - Add code for second stage Edubuntu LTSP install.
    - Change watch file to monitor Debian.

ltsp (5.4.6-1) unstable; urgency=low

  * New upstream version:
    - Use help2man to generate man pages (LP #1008053).
    - Updated German translation by Wolfgang Schweer (Closes: #702915).

    - ltsp-client:
      + pulseaudio: Add module-suspend-on-idle to improve stability.
        Thanks to Tom Wallis for reporting the issue and fix.
      + Optimize localapps user and group handling (LP: #357268).
      + Move the localapps cleanup after X terminates (LP: #1093144).
      + ltsp-cleanup: Only remove local users (LP: #1037034).
      + Avoid Xorg crashes caused by nouveau dri (LP: #1072711).
      + Make dbus machine id constant per client.

    - ltsp-build-client:
      + Mount /sys in chroot during installation.
        Thanks to Petter Reinholdtsen (Closes: #721597).
      + Fix ignored --debootstrap-keyring commandline option.

  * ltsp-client-core:
    + Recommend pciutils, used by several screen-session hooks.
    + Remove python-daemon dependency, as jetpipe no longer uses it.
    + Recommend dnsutils or knot-dnsutils, which is used to find a valid DNS
      server (Closes: #704271).
    + Drop custom udev rules for ltsp-sound, which is now installed at runtime.

  * Updated patches:
    - use-test-binary
    - jetpipe-from-ltsp-client-core-init-script
  * Removed patches applied upstream:
    - fix-ltsp-cleanup-bashism
    - fix-ltsp-config-bashisms
    - fix-screen-x-common-bashisms
    - fix-dashisms-using-local-dash
    - ltsp-update-image-aufs-submounts
    - use-run-in-initramfs-udhcp-hook
    - move-ltspconfig-cache
    - fatclients-return-0
    - cryptsetup-swap-with-nbd
 -- Stephane Graber <stgraber at ubuntu.com>   Mon, 02 Dec 2013 16:29:42 -0500

** Changed in: ltsp (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/357268

Title:
  X01-localapps pathologically slow with many groups

Status in Linux Terminal Server Project:
  Fix Released
Status in “ltsp” package in Ubuntu:
  Fix Released
Status in “ltsp” package in Debian:
  New

Bug description:
  With non-trivial numbers of users/groups (e.g. when the server LDAP
  authenticates), X01-localapps takes many, many minutes to return,
  blocking the session from starting.

  The attached patch rewrites the portion of the shell script that does
  the group deduplication in awk.

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