Created attachment 191951 [details] Example file from Calc Attached example file contains about 12 sheets of simple text. Opening this file takes a short time, but even that is more than the same content saved as xlsx is opened in Excel. This report is to explore options to reduce load times as much as possible in this simple content case. 1. Open attached file in current nightly from the commandline, using time OOO_EXIT_POST_STARTUP=1 program/soffice large-textcontent-cleared.ods with hot cache this gives: real 0m6,908s user 0m0,000s sys 0m0,000s Version: 24.8.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 25276df12abd9d002f7f899900434617b256f745 CPU threads: 15; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: de-DE (hu_HU); UI: de-DE Calc: threaded (based on the amount of CLI output, this seems to be a dbgutil build, but still)
Created attachment 191952 [details] Flamegraph made under Ubuntu 22, own build
Created attachment 191953 [details] Flamegraph of an empty document Calc opening, for reference
I am able to start editing in about 4 seconds with: Version: 24.8.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 2cedb1a19ad605df4e148589e9027512e4dd9265 CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3 Locale: en-AU (en_AU.UTF-8); UI: en-US Calc: threaded But if you see potential for improvements, of course let's do it :)
(sorry, ODS here)