[Bug 1583209] Re: OOM killer score calculations should be improved
*** This bug is a duplicate of bug 1579799 *** https://bugs.launchpad.net/bugs/1579799 I'm going to go ahead and mark this as a duplicate of bug 1579799, what I think is important is mentioned there; we need to enumerate the states that we want applications in. I don't think putting magic numbers in the shell makes sense. ** This bug has been marked a duplicate of bug 1579799 Need API to allow shell to choose custom OOM killer scores -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583209 Title: OOM killer score calculations should be improved To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1583209] Re: OOM killer score calculations should be improved
@ted, you're not wrong, the default kernel OOM killer isn't ideal for us. But writing a new one is a lot of work, especially as we have several different kernel releases to deal with. What would be less ideal, but most likely good enough to fix most user- visible bugs in the short term, is to allow shell (which is aware of the connection between apps and prompt providers) to set OOM scores itself. Shell can then use that to influence the kernel to not kill the app the user is most likely going to return to. It would also help prevent recently-used apps from being killed before older ones. To achieve that will require changes to UAL, so I'm reopening. ** Changed in: ubuntu-app-launch (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583209 Title: OOM killer score calculations should be improved To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1583209] Re: OOM killer score calculations should be improved
** Changed in: qtmir (Ubuntu) Assignee: Gerry Boland (gerboland) => Nick Dedekind (nick-dedekind) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583209 Title: OOM killer score calculations should be improved To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1583209] Re: OOM killer score calculations should be improved
Agree that this would be a good feature, along with others, if we were to write our own OOM killer algorithm. For reference, here is the code in the kernel: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/mm/oom_kill.c#n155 (I think we're also using the lowmemory driver from Android, but it's roughly the same with earlier penalties) I think it should take into account LRU, but then also the processes in the cgroup as for us we know that a cgroup represents an application. Killing one process in an application is kinda silly. There has be some discussion of doing this in userspace at the low memory levels which we could definitely do, then let the kernel be stupid and quick in emergencies, but that currently isn't on the list of things that UAL does (and I think it should be a different project) so marking invalid for UAL. ** Changed in: ubuntu-app-launch (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583209 Title: OOM killer score calculations should be improved To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1583209] Re: OOM killer score calculations should be improved
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: ubuntu-app-launch (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583209 Title: OOM killer score calculations should be improved To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1583209] Re: OOM killer score calculations should be improved
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: qtmir (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583209 Title: OOM killer score calculations should be improved To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1583209] Re: OOM killer score calculations should be improved
** Also affects: ubuntu-app-launch (Ubuntu) Importance: Undecided Status: New ** Also affects: qtmir (Ubuntu) Importance: Undecided Status: New ** Changed in: canonical-devices-system-image Importance: Undecided => High ** Changed in: canonical-devices-system-image Assignee: (unassigned) => kevin gunn (kgunn72) ** Changed in: qtmir (Ubuntu) Importance: Undecided => High ** Changed in: ubuntu-app-launch (Ubuntu) Importance: Undecided => High ** Changed in: canonical-devices-system-image Milestone: None => backlog ** Changed in: ubuntu-app-launch (Ubuntu) Assignee: (unassigned) => Ted Gould (ted) ** Changed in: qtmir (Ubuntu) Assignee: (unassigned) => Gerry Boland (gerboland) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583209 Title: OOM killer score calculations should be improved To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
