bugGNU TeXmacs - Bugs: bug #62862, Very bad performance after opening...


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bug #62862: Very bad performance after opening and closing preamble

Submitter:  Gennady Uraltsev <guraltsev>
Submitted:  Thu 04 Aug 2022 04:46:18 PM UTC
Category:  Editor Priority:  7 - High
Item Group:  None Status:  Confirmed
Privacy:  Public Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  None Release:  2.1.2
Fixed Release:  None Fixed Release: 

Sat 07 Jan 2023 08:52:55 PM UTC, comment #2: 

I tried and yes, it seems that the slowdown does disappear after pressing backspace.

When I filed the bug I did not notice that and somehow, even after trying a bit, came to the conclusion that closing and reopening was the only solution.

Gennady Uraltsev <guraltsev>
Fri 06 Jan 2023 01:03:25 PM UTC, comment #1: 

On my Mac I can experienced the slowdown after returning from the Preamble View, it occurs both for moving the cursor and typing. However the slowdown disappears completely if I press "backspace"  or if I input a TeXmacs command, e.g. "\TeXmacs". Then the speed goes back to normal as far as I can see. Very strange. Maybe understanding the origin of this temporary slowdown will pinpoint also the origin of similar issues (like working with itemise on large documents, which is slower than normal).

Massimiliano Gubinelli <mgubi>
Group administrator
Thu 04 Aug 2022 04:46:18 PM UTC, original submission:  

I found a quite significant source of poor performance. that on larger document makes working impossible

Reproduced under:
- Windows 10 running official TeXmacs 2.1.2
- Debian Linux (running in WSL) running TeXmacs 2.1.2 SVN13888 from https://build.opensuse.org/project/show/home:slowphil:texmacs-devel

How to reproduce:

- Have a reasonable length document
- Try typing or moving cursor (1)
- Display the preamble
- No need to edit anything
- Close the preamble
- Try typing or moving cursor (2)

The movement in case (2) is much slower than in case (1).

Solutions (choose one):
- Close Texmacs and reopen Texmacs
- Close the document without actually closing Texmacs and reopen document

On smaller files this is not very noticeable but on larger one it becomes impossible to continue working. Attached is an example.

Gennady Uraltsev <guraltsev>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attached Files
file #53505:  ubht.tm added by guraltsev (856KiB - application/octet-stream)
file #53506:  ubht.bib added by guraltsev (12KiB - application/x-bibtex)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by mgubi (Posted a comment)
  • -email is unavailable- added by guraltsev (Submitted the item)

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2023-01-06 mgubi Priority5 - Normal 7 - High
        StatusNone Confirmed
    2022-08-04 guraltsev Attached File- Added ubht.tm, #53505
        Attached File- Added ubht.bib, #53506

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