outline pane issues and huge note slowness

[Jean-Marc Lasgouttes]

Le 27/10/2021 à 05:16, V K a écrit :

> HEAD was master, not breakrows. I don't know what was wrong, so I deleted Lyx git folder on my machine and cloned Lyx from git anew. After that compiled master with --enable-build-type=prof – huge notes were very slow, almost stalled. I compiled breakrows branch with --enable-build-type=prof and huge notes are usable. Performance is much better than it was in master. There is some, how to say, jerking, lagging when scrolling, scrolling isn't smooth, there is a lag, but I can scroll insets almost freely. This is huge progress. Maybe master waits it :).

Good to know, I will propose it. I was waiting for good reasons :)

> I can help with testing (not this week though). I don't know anything about profiler, but installed Hotspot, launched lyxgit (that is my prefix of master Lyx) with default parameters. Now I have 56 MiB perf.data file. Versions of packages are there, I think (except those from Arch linux Aur), if you need that information: https://lists.manjaro.org/pipermail/manjaro-packages/Week-of-Mon-20211011/042684.html
> There is parser errors like "Module "libQt5Gui.so.5.15.2" is missing 1587 of 2089 debug symbols." and so on. So I can send perf.data file to you.

The problem is that, besides the versions, the precise layout of the 
binaries may differ. Therefore, I would have to clone your OS in a VM to 
be able to read the perf.data file.

Recent unreleased version of hotspot allow to save a portable file, but 
I could not get it to work in my trials. They are available here:
https://github.com/KDAB/hotspot/releases
(take the appImage file and make it runnable).

Otherwise, we could try to run "perf cord" and create a report by hand. 
I'll take a look and come back to you when I have time.

JMarc