Questions tagged [performance]

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12 votes
2 answers

Cut vim load time

I'm using vim distribution and clearly not satisfied with load time. What would be the best way to profile and speed-up vim load time? Also would be interesting to ...
  • 387
13 votes
3 answers

Vim slows down over time with syntax on

Is there anything I can do to keep syntax on when using Vim? As soon as I open anything substantial it becomes nearly impossible to edit after a while. Every keypress causes a delay. If I turn syntax ...
  • 2,252
10 votes
1 answer

Most annoying slow-down of a plain-text editor! [closed]

I am a happy user of VIM, except for some bits which I really want vim to improve on. One main issue is frequent slowdown of VIM spoiling the amazingly productive text-editing experience on a fastest ...
15 votes
2 answers

Detect most resource hungry plugin

I have some plugins installed for vim, I would like to know how can I find out what plugin uses most resources (CPU, RAM) ?
19 votes
1 answer

Do large numbers make vim run slowly?

This seems like a really daft question, but I have a Python file that has a number in it that's a thousand digits long and that file seems to be running very slowly, I'm not sure if there's some kind ...
  • 795
5 votes
3 answers

Improve performance of syntax highlighting in Vim

I have some C++ sources files which are in a few mega-bytes (a few tens thousands lines) to view and edit. The performance looks really bad in Vim. Refersh (<C-l>) or input single char in insert ...
  • 822
3 votes
1 answer

Slow startup time unrelated to plugins

When I open vim (or gvim) on MacOS X, the window opens immediately, but there is a pause of about a second before the cursor appears. I've profiled my plugins, but their startup times don't account ...
  • 703
9 votes
2 answers

Is there a way to disable the foldexpr during autocomplete?

I've noticed that vim's fold method affects the efficiency of autocomplete, e.g. C-N is slow, and C-X L is hideously slow in medium sized files with relatively expensive foldexprs. I can't see the ...
3 votes
2 answers

Vim slows down with multiple buffers etc

I think noticing a slow redrawing and slow cursor movement on a fastest PC, is one of the popular frustrations with Vim. Here I am as a yet another instance. I have a fresh installation of VIM, with ...
2 votes
2 answers

Fastest way to compare string with pattern

As far as I know I have these two options to compare a string with a pattern: Using the =~ comparison. Using the matchstr() function. So it looks like this: " with =~ if string =~ "pattern&...
  • 446
1 vote
1 answer

matchadd makes vim slow with large files

In my vimrc I have this line : call matchadd('ColorColumn', '\%81v', 100) It colors the 81th column in a subtle grey background so I can track my line length : (see the l and the f) I found out ...
  • 15.3k
0 votes
2 answers

Strangely slow key bindings

I defined these maps, to yank into system clipboard. noremap <leader>y "*y noremap <leader>Y "*Y noremap <leader>yy "*yy But when I use the first one (<leader>y), I find it ...