Created attachment 187790 [details] Exammple file Hi, I'm using Labplot (Entwicklerversion 2.12.0-88-g48a3ade8e) from the Snapstore on Ubuntu Noble. I can import a CSV data file with 2 columns (comma separated) and 100 000 rows. When I try to cut a column the memory consumption is increasing strongly and Labplot freezes the whole PC at some point. Strangely I can copy / paste the data, but cutting or deleting the column with the delete key fails. I attached the file.
Git commit 4472065134d8724ed992519d932eaea5b856d53c by Alexander Semke. Committed on 11/02/2026 at 19:45. Pushed by asemke into branch 'master'. [spreadsheet] when clearing selected cells, avoid iterations over indeces that were already cleared for fully selected columns directly. These unneeded iterations are very costly, especially for bigger spreadsheets. Also, some other minor performance improvements relevant for this workflow. FIXED-IN: 3.0 M +6 -18 src/backend/core/column/columncommands.cpp M +32 -10 src/frontend/spreadsheet/SpreadsheetView.cpp https://invent.kde.org/education/labplot/-/commit/4472065134d8724ed992519d932eaea5b856d53c
(In reply to marconeumaier@gmail.com from comment #0) > Created attachment 187790 [details] > Exammple file > > Hi, > > I'm using Labplot (Entwicklerversion 2.12.0-88-g48a3ade8e) from the > Snapstore on Ubuntu Noble. > I can import a CSV data file with 2 columns (comma separated) and 100 000 > rows. When I try to cut a column the memory consumption is increasing > strongly and Labplot freezes the whole PC at some point. > > > Strangely I can copy / paste the data, but cutting or deleting the column > with the delete key fails. I attached the file. Thank you for reporting this issue! We improved it and this step is taking now less than 1s now i7-14700 instead of 15s or so before this improvement. This fix will be part of the next major release 3.0 and will be also available soon in the next build for current development version (which is already close to 3.0 feature-wise).