[Bug 1833322] Re: Please consider no more having irqbalance enabled by default (per image/use-case/TBD)

[Christian Ehrhardt ]

While there was sadly neither enough time not enough resources to do all
the deep dive analysis that could have been done, we succeeded by
reaching out to many more parties and got their input as well. Thank you
all!

Since Noble feature freeze is coming we need to make a call either way.
I proposed the underlying seed change [1].
And even once accepted that has to be followed by an update to ubuntu-meta.
Furthermore we'd have more follow up, like enabling it in special cases like the AWS images for the reasons Fabio mentioned.

Of course this is just a proposal. There are many other options left,
from not changing anything to more subtle counters to my proposal like
only doing so in 24.10 to give things more time, to holding back until
someone found time/resource to gather more data.

But for now, I feel "Not enabling it by default, but enabling
selectively where identified to be wanted" seems to be the better choice
- and that is what I proposed.

[1]: https://code.launchpad.net/~paelzer/ubuntu-
seeds/+git/platform/+merge/460904

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https://bugs.launchpad.net/bugs/1833322

Title:
  Please consider no more having irqbalance enabled by default (per
  image/use-case/TBD)

Status in Ubuntu on IBM z Systems:
  Confirmed
Status in irqbalance package in Ubuntu:
  Confirmed
Status in ubuntu-meta package in Ubuntu:
  Confirmed

Bug description:
  as per https://github.com/pop-os/default-settings/issues/60

  Distribution (run cat /etc/os-release):

  $ cat /etc/os-release
  NAME="Pop!_OS"
  VERSION="19.04"
  ID=ubuntu
  ID_LIKE=debian
  PRETTY_NAME="Pop!_OS 19.04"
  VERSION_ID="19.04"
  HOME_URL="https://system76.com/pop"
  SUPPORT_URL="http://support.system76.com"
  BUG_REPORT_URL="https://github.com/pop-os/pop/issues"
  PRIVACY_POLICY_URL="https://system76.com/privacy"
  VERSION_CODENAME=disco
  UBUNTU_CODENAME=disco

  Related Application and/or Package Version (run apt policy $PACKAGE
  NAME):

  $ apt policy irqbalance
  irqbalance:
  Installed: 1.5.0-3ubuntu1
  Candidate: 1.5.0-3ubuntu1
  Version table:
  *** 1.5.0-3ubuntu1 500
  500 http://us.archive.ubuntu.com/ubuntu disco/main amd64 Packages
  100 /var/lib/dpkg/status

  $ apt rdepends irqbalance
  irqbalance
  Reverse Depends:
  Recommends: ubuntu-standard
  gce-compute-image-packages

  Issue/Bug Description:

  as per konkor/cpufreq#48 and
  http://konkor.github.io/cpufreq/faq/#irqbalance-detected

  irqbalance is technically not needed on desktop systems (supposedly it
  is mainly for servers), and may actually reduce performance and power
  savings. It appears to provide benefits only to server environments
  that have relatively-constant loading. If it is truly a server-
  oriented package, then it shouldn't be installed by default on a
  desktop/laptop system and shouldn't be included in desktop OS images.

  Steps to reproduce (if you know):

  This is potentially an issue with all default installs.

  Expected behavior:

  n/a

  Other Notes:

  I can safely remove it via "sudo apt purge irqbalance" without any
  apparent adverse side-effects. If someone is running a situation where
  they need it, then they always have the option of installing it from
  the repositories.

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