[Libreoffice-bugs] [Bug 131651] FILEOPEN DOCX: LO steadily increases memory usage until system freezes

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131651

Jan-Marek Glogowski <glogow at fbihome.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |thb at libreoffice.org
             Status|NEW                         |NEEDINFO

--- Comment #19 from Jan-Marek Glogowski <glogow at fbihome.de> ---
Just gave it a quick test, with my master, bibisect-6-4 and bibisect-6-5 master
checkouts and I can't reproduce. I used a fresh profile and both documents
using kf5.

so -env:UserInstallation=file:///tmp/mem /tmp/doc*.docx

LO starts with 100% CPU but completely settles after a few seconds with
constant memory and no CPU load. I'm also on Debian Buster, FWIW.

Best bet would be to get some callgrind / perf log. See performance debugging
in https://wiki.documentfoundation.org/Development/How_to_debug

While callgrind is much slower, its logs are also much smaller. So if you can't
or don't want to debug this yourself, you probably want to run callgrind -
instead of perf - for a while (on that HW probably 30m+).

My first guess was "just" an other Writer idle layout problem, but that should
normally utilize a full core, which doesn't seem to happen for you, and the
memory gets leaked very slow (3% in 15m of 7.5GB), so I'm quite probably wrong.
If there was a parsing problem with the new footnote code, it would probably
exhaust the memory really fast.

Still in the end this would mean blind fixing for me without a reproducer, so I
doubt I can help.

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