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copied!<p>Your <code>.emacs</code> or <code>init.el</code> shouldn't have many <code>require</code> or <code>load</code> commands, it should mostly have <code>autoload</code>. The <a href="http://www.gnu.org/software/emacs/manual/html_node/elisp/Autoload.html" rel="noreferrer"><code>autoload</code></a> function tells Emacs “if you ever need this function, load that file”. This way, the file is only loaded when and if you actually use the function. You only need <code>require</code> (or very rarely <code>load</code>) in two cases:</p> <ul> <li>if there's a customization that needs to go into effect immediately (e.g. <code>(require 'cl)</code>, a color theme);</li> <li>if what you're loading is a small file that contains the <code>autoloads</code> and other start-up definitions of a package (e.g. <code>(require 'tex-site)</code>.</li> </ul> <p>If you're not doing this already, calling <code>autoload</code> for things like mode-specific customizations can cut your startup time down significantly, because Emacs will have to load fewer files.</p> <p>Furthermore, make sure your files are byte-compiled; they'll load a little faster (less CPU time). Call <code>M-x emacs-lisp-byte-compile</code> on each <code>.el</code> file, or <code>M-x byte-recompile-directory</code> (these commands are in the Emacs-Lisp menu).</p> <p>Finally, note that load times don't matter so much because you should be <a href="http://www.gnu.org/software/emacs/manual/html_node/emacs/Emacs-Server.html" rel="noreferrer">starting Emacs at most once per session</a>. Start Emacs automatically when you log in, either with a window or in the background with the <code>--daemon</code> option. Then, to edit a file, run <a href="http://www.gnu.org/software/emacs/manual/html_node/emacs/Invoking-emacsclient.html" rel="noreferrer"><code>emacsclient</code></a>. You can also <a href="http://www.gnu.org/software/emacs/manual/html_node/emacs/emacsclient-Options.html" rel="noreferrer">tell <code>emacsclient</code> to start Emacs if it's not running yet</a> if you'd rather not start it when you log in.</p>

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