User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36
Build Identifier: 126.96.36.199
1. Last week made 5 1-sheet spreadsheets. Variations on theme. Data ~ 200 rows x 100 columns.
2. On Friday & Saturday built out 3 of these into 6-sheet spreadsheets. Each sheet has about same 200 rows x 100 columns using simple formulas. Zip, zip. Copy, paste, formulas, formatting. LibreOffice process instantaneously.
3. Sunday AM start last 2 spreadsheets. Same formulas, operations, volume of data, etc. Files balloon from 2MB to 10MB. 300MB memory. Operations take 10 mins to complete.
4. First 3 spreadsheets still fine. Operations go zip zip.
4. Could be Windows 10 x64 update? Update from LibreOffice 5.1 to 5.2?
5. Totally baffling. Cost me 8 hours to do 2 hours work.
I can provide file
Reset User Profile?No
Yes, if you can share the file(s) publicly, attaching it would be great.
Which exact version of LibreOffice are you using?
Created attachment 127419 [details]
slow big file
Created attachment 127420 [details]
nice fast file
Confirmed, "slow big file" loads ~45s in v188.8.131.52 / Windows 7. "nice fast file" loads in 2s.
It must be something with Styles / Conditional Formatting. When I click select View -> Styles and Formatting, LibreOffice hangs hogging a core.
Raymond, can you check what the difference is between the two files that is related to styles and formatting?
I made a 100s limited performance measurement with the slow file, two functions stand out:
sc\source\core\data\patattr.cxx:EqualPatternSets(...) 49% / 45%
sc\source\core\data\table1.cxx:AddCondFormat(...) 14% / 14%
There's been a performance fix in AOO for EqualPatternSets(...), but the import of that change was rejected:
(it claims ~10% improvement for their test file, anyway, not very significant)
Yup. That was it.
Had created 'Bold Red Font' & applied conditionally to 'matrix' sheet. No recalculation on this sheet.
For fast file, created new downstream matrix sheets. Did not create conditional. These matrices get recalculated.
For slow file, copied matrix sheet. Which brought along conditional formatting.
'Clear direct formatting' of all matrices solved speed & file size issue. Slow files now fast. And size ~2.5MB. Same as others.
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Takes about 25s in a current 6.2 master build / Windows 7.
Not quite there yet, but slowly improving.
Created attachment 145138 [details]
Callgrind output from master
Opening attachment 127419 [details]
Arch Linux 64-bit
Build ID: 8b1501d80dc9d3f42c351c6e026fa737e116cae5
CPU threads: 8; OS: Linux 4.18; UI render: default; VCL: gtk3_kde5;
Locale: fi-FI (fi_FI.UTF-8); Calc: threaded
Built on 23 September 2018