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Re: Speeding up Emacs load time
From: |
Sebastien Vauban |
Subject: |
Re: Speeding up Emacs load time |
Date: |
Wed, 24 Jul 2013 22:50:52 +0200 |
User-agent: |
Gnus/5.130006 (Ma Gnus v0.6) Emacs/24.3 (windows-nt) |
Hi Glyn and all,
Glyn Millington wrote:
> One popular technique is not to load packages until you need 'em. That means
> fewer 'requires' in your .emacs/init.el file and more autoloads.
>
> See tips 3-5 here!
>
> http://a-nickels-worth.blogspot.co.uk/2007/11/effective-emacs.html
>
> The key function is eval-after-load
I'm using GNU Emacs on Windows, and using the above, I could reduce my load
time from 10+ seconds to 3 seconds. Still 3 x over many of you, which report
sub-seconds load time.
Though, I'm a bit blocked. I don't understand how to do better, or how to
completely avoid all the require commands.
Just take a few exemple:
- `(server-start)' takes more than 200 ms to run [1]; just that one command.
Though, I must have it in my .emacs file, right?
- diff-mode-.el must be loaded before diff-mode; hence, I must have it at
startup.
- Helm is my tool for opening files or switching between buffers. Just
requiring `helm-config' (almost only autoloads) -- hence, NOT `helm' (which
is more hungry in time) -- already takes 160 ms (as it still requires
`easy-menu' and `helm-aliases').
- `diary-lib' and co (needed for appointments notification) takes 233 ms.
Shouldn't I be notified at startup of events occurring in less than 15
minutes, without having to make a first call to calendar or so?
- `mic-paren' takes just 32 ms, but for just one small package, for which I
don't have a particular trigger. Is it `find-file-hook'? Then, I won't have
parenthesis highlighted when directly typing text in a newly created buffer
(or in the scratch). So, I need it in my .emacs. It's not eval'ed-after-load
of something else.
- The same for YASnippet (loaded in 130 ms): what would be the trigger?
Unless I have a clear one, I must require it in my .emacs file.
- Once again, the same with `recentf', which takes 92 ms. Don't I have to load
it right at startup?
These are a couple of examples which take a lot of the time, and for which I
don't see a specific trigger that would allow me to defer their load to later.
Any comments?
Best regards,
Seb
[1] The above are times on a very recent laptop i7, when on mains. Multiply
times by 3.5 when on battery.
--
Sebastien Vauban
Message not available
Message not availableRe: Speeding up Emacs load time, Emanuel Berg, 2013/07/15
Re: Speeding up Emacs load time, Eli Zaretskii, 2013/07/15