GNU bug report logs - #20961
24.5; `dired-jump' quite slow under Cygwin Emacs

Previous Next

Full log

View this message in rfc822 format

From: Eli Zaretskii <eliz <at> gnu.org>
To: Sebastien Vauban <sva-news <at> mygooglest.com>
Cc: 20961 <at> debbugs.gnu.org
Subject: bug#20961: 24.5; `dired-jump' quite slow under Cygwin Emacs
Date: Thu, 02 Jul 2015 17:57:42 +0300

> From: Sebastien Vauban <sva-news <at> mygooglest.com>
> Date: Thu, 02 Jul 2015 12:27:11 +0200
> 
> Now that profiling works under Cygwin Emacs (thanks Ken and Eli!), I can
> report the following when playing a couple of seconds with Dired-jump
> (which I find much slower on Cygwin Emacs than on Windows Emacs).
> 
> --8<---------------cut here---------------start------------->8---
> - ...                                                         6440  59%
>  - find-file                                                  6315  58%
>   - apply                                                     6315  58%
>    - ad-Advice-find-file                                      6315  58%
>     - let                                                     6315  58%
>      - let                                                    6315  58%
>       - setq                                                  6315  58%
>        - with-no-warnings                                     6315  58%
>         - funcall                                             6315  58%
>          - #<compiled 0x4018ad5f>                             6315  58%
>           - find-file-noselect                                6315  58%
>            - run-hook-with-args-until-success                 6315  58%
>             - dired-noselect                                  6315  58%
>              - dired-internal-noselect                        6315  58%
>               - dired-readin                                  6311  58%
>                - dired-readin-insert                          6290  57%
>                 - dired-insert-directory                      6290  57%
>                  - insert-directory                           6289  57%
>                   - apply                                     6289  57%
>                    - ls-lisp--insert-directory                6289  57%
>                     - get-free-disk-space                     6288  57%
>                      - process-file                           6288  57%
>                         apply                                 6288  57%

This seems to point to get-free-disk-space, which on Cygwin invokes
the 'df' program, whereas the native w32 build calls a function to get
the same info.

You also seem to have Helm active, so perhaps these two factors
together make 'df' invocation much slower than the w32 API call.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.