[Bug 1587265] Re: ubuntu not work with tickless kernel boot option
This is still the case in Ubuntu 20.04: $ cat /boot/config-5.11.0-27-generic | grep HZ_FULL # CONFIG_NO_HZ_FULL is not set This is problematic insofar as HZ_FULL is apparently useful for reliable benchmarking (e.g. see https://vstinner.github.io/journey-to-stable- benchmark-system.html). Would be nice to get this fixed! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1587265 Title: ubuntu not work with tickless kernel boot option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1587265/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1587265] Re: ubuntu not work with tickless kernel boot option
What specific kernel version had the problem? You can check with: uname -a The CONFIG_NO_HZ_FULL kernel param was turned off at some point between trusty's 3.13 and xenial's 4.4, and without that kernel param enabled the nohz_full boot param has no effect. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1587265 Title: ubuntu not work with tickless kernel boot option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1587265/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1587265] Re: ubuntu not work with tickless kernel boot option
I used the default ubuntu desktop install (amd64 14.04) version ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1587265 Title: ubuntu not work with tickless kernel boot option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1587265/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1587265] Re: ubuntu not work with tickless kernel boot option
Did this issue start happening after an update/upgrade? Was there a kernel version where you were not having this particular problem? This will help determine if the problem you are seeing is the result of a regression, and when this regression was introduced. If this is a regression, we can perform a kernel bisect to identify the commit that introduced the problem. ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: kernel-da-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1587265 Title: ubuntu not work with tickless kernel boot option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1587265/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1587265] Re: ubuntu not work with tickless kernel boot option
I could not run it, as test@test-ThinkCentre-M92P:~$ apport-collect 1587265 ERROR: connecting to Launchpad failed: [Errno 110] Connection timed out You can reset the credentials by removing the file "/home/test/.cache/apport/launchpad.credentials" and also I am not sure if that report could collect sensitive info from my system or not, so I could not upload such log now. I think the description is clear, so mark it confirmed now, Let me know if have other ways to collect logs. Thanks ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1587265 Title: ubuntu not work with tickless kernel boot option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1587265/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
