mirror of
https://github.com/neovim/neovim.git
synced 2025-11-04 09:44:31 +00:00
4ff3217bbd
Problem:
vim._watch.watchdirs has terrible performance.
Solution:
- On linux use fswatch as a watcher backend if available.
- Add File watcher section to health:vim.lsp. Warn if watchfunc is
libuv-poll.
82 lines
2.3 KiB
Lua
82 lines
2.3 KiB
Lua
local M = {}
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local report_info = vim.health.info
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local report_warn = vim.health.warn
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local function check_log()
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local log = vim.lsp.log
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local current_log_level = log.get_level()
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local log_level_string = log.levels[current_log_level] ---@type string
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report_info(string.format('LSP log level : %s', log_level_string))
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if current_log_level < log.levels.WARN then
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report_warn(
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string.format(
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'Log level %s will cause degraded performance and high disk usage',
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log_level_string
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)
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)
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end
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local log_path = vim.lsp.get_log_path()
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report_info(string.format('Log path: %s', log_path))
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local log_file = vim.uv.fs_stat(log_path)
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local log_size = log_file and log_file.size or 0
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local report_fn = (log_size / 1000000 > 100 and report_warn or report_info)
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report_fn(string.format('Log size: %d KB', log_size / 1000))
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end
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local function check_active_clients()
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vim.health.start('vim.lsp: Active Clients')
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local clients = vim.lsp.get_clients()
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if next(clients) then
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for _, client in pairs(clients) do
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local attached_to = table.concat(vim.tbl_keys(client.attached_buffers or {}), ',')
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report_info(
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string.format(
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'%s (id=%s, root_dir=%s, attached_to=[%s])',
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client.name,
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client.id,
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vim.fn.fnamemodify(client.root_dir, ':~'),
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attached_to
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)
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)
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end
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else
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report_info('No active clients')
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end
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end
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local function check_watcher()
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vim.health.start('vim.lsp: File watcher')
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local watchfunc = vim.lsp._watchfiles._watchfunc
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assert(watchfunc)
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local watchfunc_name --- @type string
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if watchfunc == vim._watch.watch then
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watchfunc_name = 'libuv-watch'
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elseif watchfunc == vim._watch.watchdirs then
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watchfunc_name = 'libuv-watchdirs'
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elseif watchfunc == vim._watch.fswatch then
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watchfunc_name = 'fswatch'
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else
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local nm = debug.getinfo(watchfunc, 'S').source
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watchfunc_name = string.format('Custom (%s)', nm)
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end
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report_info('File watch backend: ' .. watchfunc_name)
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if watchfunc_name == 'libuv-watchdirs' then
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report_warn('libuv-watchdirs has known performance issues. Consider installing fswatch.')
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end
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end
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--- Performs a healthcheck for LSP
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function M.check()
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check_log()
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check_active_clients()
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check_watcher()
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end
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return M
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