I said my initial piece and recommendation here: https://bugs.launchpad.net/ubuntu/+source/irqbalance/+bug/2046470/comments/2
It carries through here... This was brought up as a recommendation in Launchpad (here in this bug report) back in 2019, In that bug report, I questioned why this had been ignored, and not discussed much since then. It didn't go away, and it was discussed as it should have been. I was embarrassed that it had been that way for 4 years. Since then: By then Debian had already removed it from being installed as a default. Ubuntu kept it. even after that bug report... RedHat had removed it from being default installed. SUSE, is a special case, where they kept it for their Enterprise Server Lineup... Because they have different tuning settings for them, versus their desktops and other product images. But then on page 16 of their Performance Analysis, Tuning and Tools Guide (https://documentation.suse.com/sbp/server-linux/pdf/SBP-performance-tuning_en.pdf), that chapter starts out with this quote: >>> A correct IRQ configuration – above all in multi-core architecture and >>> multi-thread >>> applications– can have a profound impact on throughput and latency >>> performance ...and further says that the first step to get there is to disable irqbalance (where they give the instructions to disable the service) and how to go through irq configuration from there. Applications vendors, which we have in our repo's, such as Vlave Steam and CpuFrq, currently recommend removing irqbalance, if installed. RE: https://github.com/ValveSoftware/Proton/issues/3243 http://konkor.github.io/cpufreq/faq/ Additional to the blog article linked to in the last comment above, I found this blog (https://blogs.oracle.com/linux/post/irqbalance-design-and-internals), that goes into how it makes decisions in load balancing and is best summed up in it's conclusion: >>> This article described the internals of the irqbalance daemon. The >>> information provided >>> here can be used to debug and better understand load balance decisions >>> taken by irqbalance. The question I have is, if Ubuntu is Debian Branch, and we long ago went from having different kernels for desktop & server in ubuntu-base, but do have ubuntu-server packages and ubuntu-desktop packages, where things could be different, why is this still a broad sweep as a default install? I am happy that this is getting discussed properly now so that we can relook at this ad what it means to us today. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ubuntu-meta in Ubuntu. https://bugs.launchpad.net/bugs/1833322 Title: Consider removing irqbalance from default install on desktop images 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/irqbalance/+bug/1833322/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
