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bug#18522: 24.4.50; mapcar is very slow


From: Andreas Schwab
Subject: bug#18522: 24.4.50; mapcar is very slow
Date: Sun, 21 Feb 2016 12:08:09 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.91 (gnu/linux)

Peter Münster <address@hidden> writes:

> It seems to me, that there is a problem with "progn":
>
> Slow emacs:
>                   - progn                                        4141  46%
>                    - let                                          436   4%
>
> Fast emacs:
>                   - progn                                         401  13%
>                    - let                                          345  11%
>
>
> What do you think?

progn is very simple, all its time is spent in evaluating the
arguments.  Does profile actually work for primitives?

Andreas.

-- 
Andreas Schwab, address@hidden
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