https://bugs.documentfoundation.org/show_bug.cgi?id=155256
Bug ID: 155256
Summary: Lots CPU time used when scrolling a spreadsheet with
lots of cells with multi-line contents with page
up/down with Skia/Raster. Terrible slow with GDI
Product: LibreOffice
Version: 7.6.0.0 alpha0+ Master
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Calc
Assignee: [email protected]
Reporter: [email protected]
Description:
Lots CPU time used when scrolling a spreadsheet with lots of cells with
multi-line contents with page up/down with Skia/Raster. Terrible slow with GDI
Steps to Reproduce:
1. Open attachment 151324 (bug 125236)
2. Open an activity monitor (like process explorer)
3. Press and hold Scroll page up
Actual Results:
Utilizing a core to max. With profiling it starts to lag. With GDI it lags in
any case
Expected Results:
I assume there is some room for optimization (or related to scrolling fast
causing a crash with Skia Vulkan)
Reproducible: Always
User Profile Reset: No
Additional Info:
Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: c4a58634753a84b09f20f7271d6525a6656522d3
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win
Locale: nl-NL (nl_NL); UI: en-US
Calc: CL threaded
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