Bug 124963 - Slow scrolling of large xls file with many images
Summary: Slow scrolling of large xls file with many images
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Calc (show other bugs)
(earliest affected)
Hardware: All All
: medium normal
Assignee: Not Assigned
Keywords: haveBacktrace, perf
Depends on:
Blocks: Scrolling-PageUpDown XLS
  Show dependency treegraph
Reported: 2019-04-25 16:17 UTC by Xisco Faulí
Modified: 2020-04-09 04:43 UTC (History)
5 users (show)

See Also:
Crash report or crash signature:

Perf flamegraph (426.09 KB, image/svg+xml)
2019-04-25 17:39 UTC, Buovjaga

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Description Xisco Faulí 2019-04-25 16:17:14 UTC
This is a follow-up bug of bug 101195

Steps to reproduce:
1. Open http://rkb1c.ru/soft/35mb.xls. it should be around 25 seconds in master after https://gerrit.libreoffice.org/plugins/gitiles/core/+/af84fc9d906626255aaf136eefc5e55236e0e8a6%5E%21 and noel's improvements

2. Scroll

-> scroll is slow and lagging

Reproduced in

Build ID: fad98c8641342a77241124dd98e0cb781daef4ad
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3; 
Locale: ca-ES (ca_ES.UTF-8); UI-Language: en-US
Calc: threaded
Comment 1 Buovjaga 2019-04-25 17:39:07 UTC
Created attachment 151011 [details]
Perf flamegraph


Arch Linux 64-bit
Build ID: a0edb53e63b9fa7ed5983d6500aece1e5eff380b
CPU threads: 8; OS: Linux 5.0; UI render: default; VCL: gtk3; 
Locale: fi-FI (fi_FI.UTF-8); UI-Language: en-US
Calc: threaded
Built on 25 April 2019