Slow startup with lualine integration

[alexmozaidze]

I've noticed in the Lazy profiler that Modicator takes a long time to load, somewhere around 600-900ms. When I remove Modicator, Neovim opens almost instantly. I am unsure of what's causing such a slowdown, and glancing over the codebase, couldn't think of any probable cause.

Note

In order to view the actual time it takes for the plugin to load, lazy-load it upon UIEnter.

[mawkler]

@alexmozaidze Hmmm, that's very odd. I can't think of an obvious reason for this either.

Try creating a minimal config that includes just Modicator (and perhaps also lualine and your colorscheme). Does that give you the same behaviour?

I personally lazy load it on ModeChanged. Do you get the same one-second load time if you do that (and trigger it by changing mode)?

[alexmozaidze]

I did some experimenting and found out that lualine integration was the root cause of slow startup.

Toggle lualine integration on/off to see the difference in startup time.

Here's a minimal vimrc with Lazy for profiling:

Minimal config

-- Bootstrapping Lazy package manager
local lazypath = vim.fn.stdpath "data" .. "/lazy/lazy.nvim"

if not vim.loop.fs_stat(lazypath) then
   vim.fn.system {
      "git",
      "clone",
      "--filter=blob:none",
      "https://github.com/folke/lazy.nvim.git",
      "--branch=stable",
      lazypath,
   }
end

vim.opt.rtp:prepend(lazypath)

-- Setting up plugins
require "lazy".setup {
   {
      "nvim-lualine/lualine.nvim",
      event = "UIEnter",
      init = function()
         vim.opt.showmode = false
      end,
      opts = {},
   },
   {
      "mawkler/modicator.nvim",
      event = "UIEnter",
      init = function()
         vim.o.cursorline = true
         vim.o.number = true
         vim.o.termguicolors = true
      end,
      opts = {
         integration = {
            lualine = {
               -- Toggle for slow startup
               enabled = false
            }
         }
      }
   },
   {
      "alexmozaidze/palenight.nvim",
      priority = 1000,
   },
}

-- Load the sexy
vim.cmd.colorscheme "palenight"

[mawkler]

@alexmozaidze I get 60-70 ms startup for Modicator with Lualine integration enabled, and ~10 ms with it disabled. What version of Neovim are you using? I'm currently testing on nightly v0.10.0-dev-1962+gc26dc1f77.

[alexmozaidze]

NVIM v0.9.5
Build type: Release
LuaJIT 2.1.0-beta3

But it happens on Nightly too, iirc.
I should also mention that all my machines are quite weak, so there is a chance that the slowness is there for you too, but the CPU speed mitigates it to unnoticeable.

Sorry for late response.

[mawkler]

I see! Yeah I'm not sure what could be causing this for you. I'll leave this open and see if anyone else has a similar issue that can help us figure out what's going on.