https://bugs.kde.org/show_bug.cgi?id=484495

--- Comment #4 from Marco Rebhan <m...@dblsaiko.net> ---
(In reply to Pedro V from comment #3)
> The issue with background I/O being capable of slowing everything down to
> almost a halt is a Linux kernel problem with a long history, and it doesn't
> look like it's getting improvements any soon, but you can surely make it
> worse by using extra features added over time like Btrfs with really heavy
> compression.

I don't think this is really something that can be fixed on the Linux kernel
side and is a problem on any OS in some form (though other OSes don't have such
a disastrous reaction to it). This is caused by the wayland server killing the
socket connection to clients whose event buffer fills up, very often caused by
the application doing blocking I/O or other long operations on the UI thread,
but could also happen when the system is generally overloaded and the client
process doesn't get scheduled in time to empty its event buffer. It has to be
fixed in the wayland protocol lib (to handle a full socket buffer more
gracefully) and also in applications (don't block the UI thread).

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