lspconfig benchmarks

README.md

Description

Benchmark for setting up all/multiple servers at startup

Results

• Baseline

hyperfine "./nv-bench" -r 100 --cleanup "rm -f $HOME/.cache/nvim/{lsp.log,log}" --export-markdown results-baseline.md --command-name 'baseline'

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
baseline	39.2 ± 6.9	30.3	61.5	1.00

• Modularized

hyperfine "./nv-bench" -r 100 --cleanup "rm -f $HOME/.cache/nvim/{lsp.log,log}" --export-markdown results-1479.md --command-name 'modular-configs-1479'

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
modular-configs-1479	39.3 ± 5.4	30.7	63.7	1.00

minimal_init.lua

local on_windows = vim.loop.os_uname().version:match("Windows")

local function join_paths(...)
	local path_sep = on_windows and "\\" or "/"
	local result = table.concat({ ... }, path_sep)
	return result
end

vim.cmd([[set runtimepath=$VIMRUNTIME]])

local temp_dir
if on_windows then
	temp_dir = vim.loop.os_getenv("TEMP")
else
	temp_dir = "/tmp"
end

vim.cmd("set packpath=" .. join_paths(temp_dir, "nvim", "site"))

local package_root = join_paths(temp_dir, "nvim", "site", "pack")
local install_path = join_paths(package_root, "packer", "start", "packer.nvim")
local compile_path = join_paths(install_path, "plugin", "packer_compiled.lua")

local function load_plugins()
	require("packer").startup({
		{
			"wbthomason/packer.nvim",
			"neovim/nvim-lspconfig",
			-- "nvim-lua/plenary.nvim" -- profiler wasn't really useful here
		},
		config = {
			package_root = package_root,
			compile_path = compile_path,
		},
	})
end

_G.load_config = function()
	-- require('plenary.profile').start("lspconfig_profile.log")

	vim.lsp.set_log_level("ERROR")
	if vim.fn.has("nvim-0.5.1") == 1 then
		require("vim.lsp.log").set_format_func(vim.inspect)
	end
	local nvim_lsp = require("lspconfig")
	local on_attach = function(_, bufnr)
		local function buf_set_keymap(...)
			vim.api.nvim_buf_set_keymap(bufnr, ...)
		end
		local function buf_set_option(...)
			vim.api.nvim_buf_set_option(bufnr, ...)
		end

		buf_set_option("omnifunc", "v:lua.vim.lsp.omnifunc")

		-- Mappings.
		local opts = { noremap = true, silent = true }
		buf_set_keymap("n", "gD", "<Cmd>lua vim.lsp.buf.declaration()<CR>", opts)
		buf_set_keymap("n", "gd", "<Cmd>lua vim.lsp.buf.definition()<CR>", opts)
		buf_set_keymap("n", "K", "<Cmd>lua vim.lsp.buf.hover()<CR>", opts)
		buf_set_keymap("n", "gi", "<cmd>lua vim.lsp.buf.implementation()<CR>", opts)
		buf_set_keymap("n", "<C-k>", "<cmd>lua vim.lsp.buf.signature_help()<CR>", opts)
		buf_set_keymap("n", "<space>wa", "<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>", opts)
		buf_set_keymap("n", "<space>wr", "<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>", opts)
		buf_set_keymap("n", "<space>wl", "<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>", opts)
		buf_set_keymap("n", "<space>D", "<cmd>lua vim.lsp.buf.type_definition()<CR>", opts)
		buf_set_keymap("n", "<space>rn", "<cmd>lua vim.lsp.buf.rename()<CR>", opts)
		buf_set_keymap("n", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
		buf_set_keymap("n", "<space>e", "<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>", opts)
		buf_set_keymap("n", "[d", "<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>", opts)
		buf_set_keymap("n", "]d", "<cmd>lua vim.lsp.diagnostic.goto_next()<CR>", opts)
		buf_set_keymap("n", "<space>q", "<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>", opts)
		buf_set_keymap("n", "<space>la", "<cmd>lua vim.lsp.buf.code_action()<cr>", opts)
	end

	-- Enable the following language servers
	local test_servers = {
		"bashls",
		"beancount",
		"bicep",
		"clangd",
		"clojure_lsp",
		"cmake",
		"crystalline",
		"cssls",
		"dartls", --- adds ~120ms
		"dockerls",
		"elixirls",
		"elmls",
		"erlangls",
		"fortls",
		"gdscript",
		"gopls",
		"graphql",
		"hls",
		"html",
		"intelephense",
		-- "jdtls", --- adds ~20ms
		"jsonls",
		"julials",
		"kotlin_language_server",
		"metals",
		"omnisharp",
		"powershell_es",
		"puppet",
		"pyright",
		"r_language_server",
		-- "rnix", --- causing some problems on the new config for some reason
		"rust_analyzer",
		"serve_d",
		"solang",
		"solargraph",
		"sourcekit",
		"sqls",
		"sumneko_lua",
		"svelte",
		"tailwindcss",
		"terraformls",
		"texlab",
		"tsserver",
		"vimls",
		"vuels",
		"yamlls",
		"zls",
	}

	for _, lsp in ipairs(test_servers) do
		local success, _ = pcall(function()
			nvim_lsp[lsp].setup({
				on_attach = on_attach,
			})
		end)
		if not success then
			print("error calling: " .. lsp)
		end
	end

	-- require'plenary.profile'.stop()
	--
	-- print [[You can find your log at $HOME/.cache/nvim/lsp.log. Please paste in a github issue under a details tag as described in the issue template.]]
end

if vim.fn.isdirectory(install_path) == 0 then
	vim.fn.system({ "git", "clone", "https://github.com/wbthomason/packer.nvim", install_path })
	load_plugins()
	require("packer").sync()
	vim.cmd([[autocmd User PackerComplete ++once lua load_config()]])
else
	load_plugins()
	require("packer").sync()
end

_G.load_config()

vim.cmd([[qall]])

nv-bench

#!/usr/bin/env bash

INIT_LUA="${INIT_LUA:-$PWD/minimal_init.lua}"

export VIMRUNTIME="$HOME/.local/share/neovim/runtime"

nvim --headless -u "$INIT_LUA"