Slow saving with "support for large sheets enabled" compared to normal
Steps to Reproduce:
1. Open attachment 161712 [details]
2. Press Save
30 seconds at 100% CPU and 900 MB ram
7 seconds at 25CPU and 500 MB ram
User Profile Reset: No
Version: 18.104.22.168.alpha0+ (x64)
Build ID: 191288d6a7fb52b31038a21c4e71ee57ffa3bacd
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: Skia/Raster; VCL: win
Locale: nl-NL (nl_NL); UI: en-US
I can reproduce the issue with latest master (2020-09-20_14.51.16). When enabling the "large sheets" option saving takes ~13s instead of just ~6s.
Build ID: 40f42f317757ef02d0a4d1cfd1c4f5bd8583e8e0
CPU threads: 12; OS: Linux 5.8; UI render: default; VCL: gtk3
Locale: de-DE (de_DE.UTF-8); UI: en-US
TinderBox: Linux-rpm_deb-x86_64@86-TDF, Branch:master, Time: 2020-09-20_14:51:16
Version: 22.214.171.124.alpha0+ / LibreOffice Community
Build ID: cbcec4425e04e3614a2025b49fdc221216ac51d3
CPU threads: 4; OS: Linux 5.7; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: threaded Jumbo
with jumbo enabled and
without it enabled...
Luboš Luňák committed a patch related to this issue.
It has been pushed to "master":
optimize blank cell Excel export (tdf#133749)
It will be available in 7.4.0.
The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.