Bug 1377298

Summary: [Wayland] [Gtk3] Very high CPU load compared to generic SAL backend
Product: [Fedora] Fedora Reporter: Christian Stadelmann <fedora>
Component: libreofficeAssignee: Caolan McNamara <caolanm>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 25CC: caolanm, dtardon, erack, fedora, mstahl, sbergman
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-09-19 14:35:58 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Christian Stadelmann 2016-09-19 11:47:03 UTC 
Description of problem:
When running with Gtk3 SAL backend, LibreOffice is much slower than with "gen" SAL backend.

Version-Release number of selected component (if applicable):
libreoffice-5.1.5.2-6.fc24.x86_64
libreoffice-5.2.1.2-2.fc25.x86_64

How reproducible:
always

Steps to Reproduce:
1. just use LibreOffice. Compare it running with and without SAL_USE_VCLPLUGIN=gen set.

Actual results:
Gtk3 backend is very slow

Expected results:
Gtk3 backend should be faster
Comment 1 Caolan McNamara 2016-09-19 12:14:30 UTC 
Is there a difference between gtk3 on X vs wayland, cause the comparison to gen isn't helpful to isolate anything
Comment 2 Christian Stadelmann 2016-09-19 14:35:58 UTC 
(In reply to Caolan McNamara from comment #1)
> Is there a difference between gtk3 on X vs wayland, cause the comparison to
> gen isn't helpful to isolate anything

No. Gtk3 on X11 vs. Wayland doesn't show any noticeable difference. Only Gtk3 shows more CPU time compared to gen. I might just have run into bug #1373933