[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
sorry... I think the only kernel yet that did not suffer was https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/ 5.4.0-997_5.4.0-997 will try 5.5-rc1 [1] is not totally equal, but may be related. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
There is for sure a bug. As I said, I know how a system behaves that is suffering from too much swapping. My case is far worse. and still, about once a day the GUI is completely locked. this cannot be explained from swapping and cannot be solved by disabling swap. I think the only kernel yet that did not suffer was -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
According to the description there's no swap in the end, so I think it's like discussion in [1]. So yes, I think it's still a kernel bug. For desktop usage, [2] [3] are mentioned by dsd in the discussion. Maybe we can adopt those daemon as an OOM killer for desktops. [1] https://lkml.org/lkml/2019/8/4/15 [2] https://github.com/endlessm/eos-boot-helper/blob/master/psi-monitor/psi-monitor.c [3] https://gitlab.freedesktop.org/hadess/low-memory-monitor -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
I'm not really sure this is a bug. It sounds like expected behaviour: 1. Disk gets thrashed. 2. Any processes relying on memory swapping to/from that disk get delayed. No particular process is doing anything wrong. Just if you want to avoid that situation then maybe don't configure swap on such a disk. Then if you can survive without swap, problem solved. If you still need swapping for other reasons then either do so on a different disk or add more RAM, or run fewer programs. I don't think there's any bug here(?) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
Please test latest mainline kernel: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5-rc1/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
Thanks. This looks like the cause of high disk IO at least: jan 3400 0.0 0.0 2600 676 pts/8SDez07 0:00 /bin/sh /usr/bin/bcompare RAID/Incoming/NAS-DATEN/ jan/NAS-DATEN/ jan 3412 70.7 11.3 2759972 1851804 pts/8 Sl Dez07 900:13 /usr/bin/bcompare RAID/Incoming/NAS-DATEN/ jan/NAS-DATEN/ ** Changed in: linux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
attached "ps auxw" while GUI was freezed. kernel 5.4.1-050401-generic no swap I restarted GUI using /etc/init.d/sddm restart right now only the KDE taskbar and menu are locked, Alt-Tab and programs still work. (this is a rather new phenomena) I already experienced this once, where some programs were freezed too (eg libreoffice) and others weren't. I only got a message like "program does not answer, force close it"? maybe this is a second hand problem as some inter-process communication locks apps when KDE is locked? after about 5 minutes KDE bar crashed and restarted. now works. from syslog while KDE bar locked: pulseaudio[30539]: E: [pulseaudio] bluez5-util.c: GetManagedObjects() failed: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. ... PackageKit: daemon quit systemd[1]: packagekit.service: Main process exited, code=killed, status=15/TERM systemd[1]: packagekit.service: Succeeded. ... dbus-daemon[1772]: [system] Activating via systemd: service name='org.freedesktop.PackageKit' unit='packagekit.service' requested by ':1.679' (uid=1000 pid=32050 comm="/usr/bin/plasmashell ") systemd[1]: Starting PackageKit Daemon... PackageKit: daemon start dbus-daemon[1772]: [system] Successfully activated service 'org.freedesktop.PackageKit' systemd[1]: Started PackageKit Daemon. ** Attachment added: "processes.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+attachment/5310701/+files/processes.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1852001] Re: KDE GUI freeze on high disk IO, but disabling swap fixes it
** Summary changed: - GUI freeze on high disk IO, but disabling swap fixes it + KDE GUI freeze on high disk IO, but disabling swap fixes it -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852001 Title: KDE GUI freeze on high disk IO, but disabling swap fixes it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
