Discussion: Full support of Vi / Vim / Neovim Performance

[elviskahoro]

Describe the solution you'd like?

Vim Speed + Performance similar to alacritty.

Is your feature request related to a problem? Please describe.

My full Vimrc with various plugins installed, performs noticeably slower in Warp compared to Alacritty. I removed the plugins but kept sensible vim settings from the vimrc to test scrolling time with a base vimrc. Without plugins the difference is not as pronounced and not to the detriment of usability, but with plugins it was very noticeable and led to me using alacritty for text editing related tasks.

Additional context

Results

Alacritty - 59 seconds
08:05:20
08:06:19

Warp - 77 seconds total
08:06:23
08:07:40

~1.3 X - length

[elviskahoro]

Video Here: https://elvis.ai/assets/warp_test_01.m4v
Warp - Test
09/23/2021

Vim's Scrolling Speed via Shift + ]
is considerably slower in warp compared to alacritty.
Scroll through a large file (pandas-core/generic.py)

Note: Tried to get the display to be as similar as possible (via alacritty.yml) but the warp window displays 49 vim lines and alacritty displays 48 vim lines.
Have a window running TOP under alacritty and warp for the clock.

Alacritty Settings:

	window
		padding: x = 8
		padding: y = 0

	font:
		size: 14.0
		offset: y = 2

Warp Settings:

	font size: 14

[CalgaryMichael]

x-post from Discord message:

Small visual bug that I had noticed when using vim (v 8.2) on Warp. You can see the cursor is bouncing around at random when scrolling on a file. Does not seem to have any affect besides visual -- when you stop scrolling, the cursor is in the correct location.

Screen.Recording.2021-10-05.at.2.18.57.PM.mov

Let me know if you need another further information (vim plugins, etc.)

[S15]

Ran into similar performance issues using with vim + warp. I see slow scrolling, slow cursor movement, and slow input. I was directed to this ticket to add information. What I am seeing appears to be related to having a (drawing a?) background color.

I set termguicolors, and use a custom color scheme. I link (most of) the rest of the highlight groups against the Normal group, and I set the Normal highlight group to:

hi Normal guifg=#bbbbbb guibg=#333333 gui=NONE

Changing Normal to:

hi Normal guifg=#bbbbbb guibg=NONE gui=NONE

seems to resolve the performance problems. (Similarly I tried editing with vim -u NONE and that seemed to work fine)

[Caprowni]

Just wanted to chime in on this after experiencing the same issues with lag using Vim, using the fix @S15 mentioned above worked for me also, speed increased to what I would expect!

[lrvdijk]

For me one of the last updates has fixed performance issues.

[gagata]

oddly enough i most often hit the issues (gettiing a rainbow circle and all) when pressing backspace or switching between modes.

[elviskahoro]

From discord #vim-users 11.13.2021

I can't use ctrl-6 to go back to my latest buffer in nvim. This works in all other terminals I've used so far.
map <C-^> even adding this to my init.vim doesn't change anything...
<C-^> works but doesn't