[Bug 1979997] Re: Ensure minimum total memory available to desktop systems

[Łukasz Zemczak]

Hello Dimitri, or anyone else affected,

Accepted ubiquity into jammy-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/ubiquity/22.04.17 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
jammy to verification-done-jammy. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-jammy. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: ubiquity (Ubuntu Jammy)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-jammy

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https://bugs.launchpad.net/bugs/1979997

Title:
  Ensure minimum total memory available to desktop systems

Status in ubiquity package in Ubuntu:
  Fix Released
Status in ubiquity source package in Jammy:
  Fix Committed

Bug description:
  [Impact]

   * A Desktop install with a Desktop Environment, a web-browser, web-
  browser based apps (vscode / mattermost / slack / spotify / keybase /
  etc), may use quite a bit of RAM

   * To elivate or delay OOM behaviour bump our swap & ram calculations

   * Ensure that total available memory (RAM+SWAP) is at least 8GB,
  without taking up more than 10% of disk space (in non-zfs unencrypted
  case only).

  [Test Plan]

   * Perform following installs:
     - unencrypted
     - encrypted LUKS
     - zfs
     - zfs encrypted

   * .... with following ram configurations
     - 2GB RAM
     - 5GB RAM
     - 8GB RAM
     - 10GB RAM

   * Which should result in
     - 6GB of SWAP
     - 3GB of SWAP
     - 2GB of SWAP
     - 2GB of SWAP

  [Where problems could occur]

   * For a number of low RAM combinations this will result in higher
  swap sizes; which will be a higher % of disk space, meaning minimum
  amount of disk space required is also going up.

   * Higher RAM machines should not experience any changes

  [Other Info]

   * This is primarily driven by average basic desktop usage, with
  amount of anonymous pages that can be swapped out, as they are unused.

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