| Summary: | Excess CPU usage from png_read_image | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | derp <seria.warty-0m> |
| Component: | performance | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | REPORTED --- | ||
| Severity: | normal | CC: | kdedev, nate |
| Priority: | NOR | ||
| Version First Reported In: | 6.3.0 | ||
| Target Milestone: | --- | ||
| Platform: | Other | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
| Attachments: | sysprof screenshot | ||
Created attachment 178584 [details] sysprof screenshot SUMMARY I noticed excess cpu usage from png_read_image when benchmarking maximize-unmaximize scenario, related to SVG rendering. This png loading can likely be cached. I am not sure if it's related to the cursor or the window decoration drawing app icon. The tested app was Discord with ozone Wayland. STEPS TO REPRODUCE 1. Maximize the window by dragging to the top and then back to unmaximize 2. Repeat several times 3. Observe sysprof results OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: Fedora 41 AMDGPU KDE Plasma Version: 6.3.0 KDE Frameworks Version: 6.11.0 Qt Version: 6.8.2 ADDITIONAL INFORMATION attached sysprof screenshot