[Libreoffice-bugs] [Bug 132028] LO 6.3.x/6.4.x No Menu and Very Slow Keyboard with GTK3 VCL

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=132028

--- Comment #14 from Julien Nabet <serval2412 at yahoo.fr> ---
Alex: I wonder if it could be due to the fact your libs may be a bit old.
Indeed Ubuntu 16.04 is the previous LTS. Meanwhile 18.04 has been released and
there'll be soon 20.04

Would you be interested in trying Flamegraph to find bottleneck? (see
http://www.brendangregg.com/flamegraphs.html)
You need a build with enable-symbols. I don't know if it's ok with
enable-dbgutil but that's the reason I got 2 local builds in my machine.

I know I need to type this only once for a session if I want to use Flamegraph:
 sh -c 'echo 1 >/proc/sys/kernel/perf_event_paranoid'
(don't know if it's required for every machine)

then I use these 2 alias:
alias perflibo='perf record -F 200 --call-graph dwarf --pid=`pidof
soffice.bin`'
alias perfsvg='perf script |
/home/julien/projects/FlameGraph/stackcollapse-perf.pl |
/home/julien/projects/FlameGraph/flamegraph.pl --width 4096 --height 24 >
perf.svg'

(I just git clone Flamegraph in /home/julien/projects)

perflibo is to retrieve traces
perfsvg is to generate the graph.

See
https://wiki.documentfoundation.org/Development/How_to_debug#Performance_debugging_.28perf.29

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