emacs 启动速度慢



我的 emacs 每次都需要几秒钟才能启动,这比我预期的要慢。在此期间,它说"联系主机:"果酱回购和梅尔帕。

我当前的配置是否合理?有没有办法加快速度,同时仍然能够在需要时安装软件包?

;; init.el --- Emacs configuration
;; INSTALL PACKAGES
;; --------------------------------------
(require 'package)
(add-to-list 'package-archives '("melpa" . "http://melpa.org/packages/") t)
(add-to-list 'package-archives '("marmalade" . "https://marmalade-repo.org/packages/"))
(package-initialize)
(when (not package-archive-contents)
  (package-refresh-contents))
(defvar myPackages
  '(better-defaults
    paredit
    idle-highlight-mode
    ido-ubiquitous
    find-file-in-project
    smex
    scpaste
    ein
    elpy
    flycheck
    material-theme
    py-autopep8))
(package-refresh-contents)
(mapc #'(lambda (package)
    (unless (package-installed-p package)
      (package-install package)))
      myPackages)
;; BASIC CUSTOMIZATION
;; --------------------------------------
(setq inhibit-startup-message t) ;; hide the startup message
(load-theme 'material t) ;; load material theme
(global-linum-mode t) ;; enable line numbers globally
;; PYTHON CONFIGURATION
;; --------------------------------------
(elpy-enable)
(elpy-use-ipython)
;; use flycheck not flymake with elpy
(when (require 'flycheck nil t)
  (setq elpy-modules (delq 'elpy-module-flymake elpy-modules))
  (add-hook 'elpy-mode-hook 'flycheck-mode))
;; enable autopep8 formatting on save
(require 'py-autopep8)
(add-hook 'elpy-mode-hook 'py-autopep8-enable-on-save)
;; enable electric pair minor mode
(defun electric-pair ()
  "If at end of line, insert character pair without surrounding spaces.
    Otherwise, just insert the typed character."
  (interactive)
  (if (eolp) (let (parens-require-spaces) (insert-pair)) (self-insert-command 1)))
(add-hook 'python-mode-hook
          (lambda ()
            (define-key python-mode-map """ 'electric-pair)
            (define-key python-mode-map "'" 'electric-pair)
            (define-key python-mode-map "(" 'electric-pair)
            (define-key python-mode-map "[" 'electric-pair)
            (define-key python-mode-map "{" 'electric-pair)))

;; Send line from code buffer
;; http://stackoverflow.com/questions/27777133/change-the-emacs-send-code-to-interpreter-c-c-c-r-command-in-ipython-mode/30774439#30774439
(defun my-python-line ()
(interactive)
(save-excursion
  (setq the_script_buffer (format (buffer-name)))
  (end-of-line)
  (kill-region (point) (progn (back-to-indentation) (point)))
  (if  (get-buffer  "*Python*")
  (message "")
  (run-python "ipython" nil nil))
  ;; (setq the_py_buffer (format "*Python[%s]*" (buffer-file-name)))
  (setq the_py_buffer "*Python*")
  (switch-to-buffer-other-window  the_py_buffer)
  (goto-char (buffer-end 1))
  (yank)
  (comint-send-input)
  (switch-to-buffer-other-window the_script_buffer)
  (yank))
  (end-of-line)
  (next-line)
  )
(add-hook 'python-mode-hook
    (lambda ()
  (define-key python-mode-map "C-cn" 'my-python-line)))

最近,从 MELPA 加载包的速度非常慢,我不太确定为什么。要解决这个问题(或至少确保它只发生一次),你可以做的是在守护程序模式下运行 Emacs,然后在你想要编辑文件时连接到它。这意味着装载成本只产生一次。这就像在启动时运行emacs --daemon一样简单。然后通过 emacsclient 连接。

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