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 th
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.
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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/201
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
Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5-rc1/
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https://bugs.launchpad.net/bugs/1852001
Title:
KDE GUI freeze on high disk IO,
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-DATE
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 w
** 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
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