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

[Alkis Georgopoulos]

A note about a change in behavior with the committed fix:

Previously, if a user U was a member of group G,
then all other users U1 U2 U3... that were members of that G group were also created locally in the LTSP client.

Now they aren't, and that should make the script execute in msecs even
if thousands of users are in the same G group (e.g. a group named
"users" that contains everyone).

But if someone has a use case where he still needs the old behavior,
please mention it in this bug report.

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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 Committed
Status in “ltsp” package in Ubuntu:
  Triaged
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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