[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #23 from M. Knepper --- This a comment from a different duplicate bug thread catching the issue in action. It seems to get much worse at higher resolutions from my experience. VIDEO LINK: https://www.youtube.com/watch?v=EXyMSzOVsds Hardware: 13700k 7900xt 32gb DDR5 2tb SSD NVME Software/OS: Fedora 40 Linux 6.8x LibreOffice 24.2.3.2 hTOP Gnome 46 Gnome-Terminal GPU drivers, VCL version, GTK version, etc, etc - whatever is on Fedora 40 as of this video. Confirmed My Testing With: 2700x RX 580 8gb 16gb DDR4 1tb SSD SATA Linux 5.x LibreOffice 7.6+ Note: This seems to happen regardless of using any widget toolkit such gtk, qt, whether it's on Xorg, Wayland, a Debian distro, an Arch distro, a Fedora based distro etc. I've been able to confirm for sure on different hardware and since version 7.6+ of LibreOffice. I plan to test newer versions soon. As stated before, I tested it on 15k words to 50k words, 30 pages to 72 pages - it has high CPU usage either way. This doesn't happen on other word processors. The issue persists regardless of scaling. 100% scaling makes no difference and neither 200% scaling. 150% doesn't make a difference either. -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Buovjaga changed: What|Removed |Added CC||lp.allar...@gmail.com --- Comment #22 from Buovjaga --- *** Bug 160647 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #21 from Jeff Fortin Tam --- > What might be worth exploring there is what theme is gtk3 using, > default Adwaita or something else? I don't know if this is what you're asking, but: my computers' GNOME sessions are running the standard Adwaita theme on Fedora (i.e. did not set anything else myself, and the distro does not ship its own theme either), and the version I tested here was the flatpaked version (so presumably unaffected by whatever is going on elsewhere); otherwise, I'm not entirely sure how to check what the app is "actually running"; it at least "looks" like GTK3 Adwaita, and the About dialog says it's GTK3, but as I don't seem to be able to just spawn the GTK Inspector from it (?) I have no way to be 110% sure. Also: the sysprof capture seemed a bit incomplete because I was never able to figure out how to install the ".Debug" flatpak package for the freedesktop runtime, so I only had the "org.libreoffice.LibreOffice.Debug" extra flatpak package installed. If you have a magical trick to get the more complete symbols, I'm happy to try it. -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #20 from Caolán McNamara --- https://bugs.documentfoundation.org/show_bug.cgi?id=154602#c17 has a lot of "resizing" in the middle block which is odd, as presumably there isn't really any resizing expected, so possibly some glitch is triggering a continual cycle of resizing. What might be worth exploring there is what theme is gtk3 using, default Adwaita or something else? I've seen cases on macOS where there was a constant tiny "jitter" triggering resizes, perhaps there is something similar here where changing the theme might perturb it. The far left block looks directly associated with the cursor movement and subsequent draws though. -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #19 from Jeff Fortin Tam --- Created attachment 193928 --> https://bugs.documentfoundation.org/attachment.cgi?id=193928=edit Sysprof 46 capture screenshot - CPU usage -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #18 from Jeff Fortin Tam --- Created attachment 193927 --> https://bugs.documentfoundation.org/attachment.cgi?id=193927=edit Sysprof 46 capture screenshot - graphics marks -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #17 from Jeff Fortin Tam --- Created attachment 193926 --> https://bugs.documentfoundation.org/attachment.cgi?id=193926=edit Sysprof 46 capture screenshot - flamegraph -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #16 from Jeff Fortin Tam --- Created attachment 193925 --> https://bugs.documentfoundation.org/attachment.cgi?id=193925=edit Sysprof 46 performance profiling capture Let me put some objective measurements into the mix here with a profiling measurement using Sysprof. I reproduced this by using the provided CSV sample above and pressing-and-holding the down arrow button on the keyboard of a 4K HiDPI (@ 2x) Intel Kabylike laptop running Wayland GNOME on Fedora 39, with the Flatpak flathub version of LibreOffice: Version: 24.2.2.2 (X86_64) / LibreOffice Community Build ID: d56cc158d8a96260b836f100ef4b4ef25d6f1a01 CPU threads: 8; OS: Linux 6.8; UI render: default; VCL: gtk3 Locale: en-US (en_US.UTF-8); UI: en-US Flatpak Calc: threaded I will attach screenshots of the essentials of that sysprof capture. My naïve observations: * The overwhelming majority of time/efforts are spent in "PaintHelper" and "SdrPaintView" functions and the like, which ultimately spend a ton of time doing cairo_paint and cairo_fill everywhere. * It seems to be single-threaded, as per the CPU usage graphs. My gut feeling: it's probably spamming the backend as fast and often as keyboard input events are coming, without any throttling/smoothing. I don't think it makes sense for the app to be trying to respond to every event, 600 times per second (the 25-seconds sysprof recording shows 15 thousand function calls...). -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added Severity|trivial |major -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #15 from M. Knepper --- I don't think this should be marked as trivial because, for most people, the slowness of 4k scrolling makes LibreOffice so horrible that it's better to use something else. A bug so bad that it makes you want to use a different program is not trivial. This isn't a severe security thing, but it's still important. I wanted to add an update and say I'm still able to reproduce this bug. I haven't tried the latest packages on Arch, but it still exists on Debian, Ubuntu, and Fedora. -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Stéphane Guillou (stragu) changed: What|Removed |Added Regression By||Luboš Luňák Version|7.3.0.0 beta1+ |7.3.1.3 release -- You are receiving this mail because: You are the assignee for the bug.
[Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Stéphane Guillou (stragu) changed: What|Removed |Added See Also|https://bugs.documentfounda | |tion.org/show_bug.cgi?id=15 | |7830| --- Comment #14 from Stéphane Guillou (stragu) --- *** Bug 157830 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Timur changed: What|Removed |Added Version|7.4.6.2 release |7.3.0.0 beta1+ Keywords|bibisectRequest |bibisected, bisected --- Comment #13 from Timur --- source sha:7c29b13ac67e3796b5998789371fa68acb01a260 author Luboš Luňák Tue Jan 11 2022 committer Caolán McNamara Wed Jan 26 2022 avoid Xlib cairo surfaces for small virtual devices (bsc#1183308) Luboš is not active anymore. -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #12 from Timur --- Seems OK in 7.2. Repro with 4K in latest Linux bibisect 7.3 and 24.2. I used 100% scaling. Bug seen when scrolling over the bottom edge . Bug 155217 seems a real dupe, others are for general slowness, to be checked. -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Stéphane Guillou (stragu) changed: What|Removed |Added Blocks||90796, 146014 Referenced Bugs: https://bugs.documentfoundation.org/show_bug.cgi?id=90796 [Bug 90796] [META] HiDPI / Retina bugs https://bugs.documentfoundation.org/show_bug.cgi?id=146014 [Bug 146014] [META] Poor Scrolling Performance -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Stéphane Guillou (stragu) changed: What|Removed |Added Component|Calc|LibreOffice --- Comment #11 from Stéphane Guillou (stragu) --- Changing component to the whole of LibreOffice as two duplicates talk about Writer. -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Stéphane Guillou (stragu) changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=15 ||7830 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Stéphane Guillou (stragu) changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=14 ||4033 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=14 ||1578 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=14 ||7163 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=15 ||3828 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Stéphane Guillou (stragu) changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=15 ||5410 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #10 from jake.m.knep...@gmail.com --- Played with LibreOffice (writer) at 4k on Xorg and i3wm. Same thing seems to happen. CPU usages spikes to 50% plus on a single thread/core for some reason. Scrolling other applications like Firefox at 4k for example doesn't seem to push any particular CPU thread drastic usage levels. -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=15 ||2657 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=15 ||3542 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #9 from jake.m.knep...@gmail.com --- (In reply to Telesto from comment #8) > There are some bug reports about performance problems with Wayland. Others > like bug 155375 comment 0 report no difference between x.org or Wayland. So > might be caused by a 4k monitor or Wayland backend, or both.. Or maybe even > something else I will test the 4k performance problem on Xorg sometime this week. I don't notice a difference between 1080p/1440p Wayland and Xorg - they're both very responsive. The problem seems to happen when the resolution is switched to something like 4k on Wayland. We'll see if the problem persists on Xorg. -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 --- Comment #8 from Telesto --- There are some bug reports about performance problems with Wayland. Others like bug 155375 comment 0 report no difference between x.org or Wayland. So might be caused by a 4k monitor or Wayland backend, or both.. Or maybe even something else -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=15 ||3111 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added See Also||https://bugs.documentfounda ||tion.org/show_bug.cgi?id=15 ||2911 -- You are receiving this mail because: You are the assignee for the bug.
[Libreoffice-bugs] [Bug 154602] Scrolling using keyboard very slow (GTK3) with 4K monitor
https://bugs.documentfoundation.org/show_bug.cgi?id=154602 Telesto changed: What|Removed |Added Summary|Scrolling using keyboard|Scrolling using keyboard |very slow (GTK3)|very slow (GTK3) with 4K ||monitor -- You are receiving this mail because: You are the assignee for the bug.
