Re: Long delay after M-x commandname

[Michael Heerdegen]

Eduardo Ochs <eduardoochs@gmail.com> writes:

> This takes 10 seconds:
>
>   (execute-extended-command--shorter "find-eev-quick-intro"
> "find-eev-qui")

Wow - takes 36 seconds for me.  In emacs -Q still 2 or 3 seconds.  I
think a bug report would definitely not be wrong.

Here is the result of running the profiler (using my current session).
I don't see anything obvious - no sit-for or so.  Maybe it depends on
completion-styles involved?  Let's try ... eh, no, with the default
styles enabled I still see 34 seconds.  Maybe this just scales with the
amount of loaded packages and "find-eev-quick-intro" is just very hard
to shorten, dunno.  Anyway, here is the profiler result:

Elapsed time: 35.878s (including 1.239s in 1 GCs and excluding 0.479s of idle 
time)
Conses: 511713
Vector-Cells: 42
Strings: 32135
String-Chars: 100
Symbols: 1.10411e+06
Floats: 606
Intervals: 138814

       34239 100% - ...
       33925  99%  - read-from-minibuffer
       33925  99%   - command-execute
       33925  99%    - call-interactively
       33925  99%     - funcall-interactively
       33886  98%      - my-profiler-profile-next-command
       33886  98%       - my-measuring-idle-time
       33886  98%        - #<compiled 0x2ec4e28c32523d9>
       33886  98%         - eval
       33886  98%          - benchmark-run
       33886  98%           - benchmark-call
       33886  98%            - #<lambda 0xfdda4d053>
       33886  98%             - progn
       33886  98%              - funcall-interactively
       33886  98%               - my-pp-eval-expression
       33800  98%                - pp-eval-expression
       33800  98%                 - eval
       33800  98%                  - progn
       33800  98%                   - progn
       33800  98%                    - execute-extended-command--shorter
       33760  98%                     - completion-try-completion
       33760  98%                      - completion--nth-completion
       33756  98%                       - completion--some
       33756  98%                        - #<compiled -0xd2c16e5a3854222>
       19670  57%                         - completion-pcm-try-completion
       19566  57%                          - 
completion-pcm--find-all-completions
       19562  57%                           - completion-pcm--all-completions
           4   0%                              completion-pcm--pattern->regex
         104   0%                          - completion-pcm--merge-try
          72   0%                             completion-pcm--merge-completions
       10354  30%                         - completion-substring-try-completion
       10354  30%                          - 
completion-substring--all-completions
       10350  30%                             completion-pcm--all-completions
        3732  10%                           completion-emacs22-try-completion
           4   0%                         completion--styles
           8   0%                     - execute-extended-command--shorter-1
                                        [...]


Michael