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bug#18522: 24.4.50; mapcar is very slow
From: |
Peter Münster |
Subject: |
bug#18522: 24.4.50; mapcar is very slow |
Date: |
Mon, 22 Feb 2016 21:41:11 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) |
On Mon, Feb 22 2016, Eli Zaretskii wrote:
> I think the next step is to profile the code below "let". Can you try
> using 'perf' for that purpose?
Slow emacs: almost all time is spent in Fset_default (96%)
Fast emacs:
25.36% emacs emacs [.] eval_sub
10.73% emacs emacs [.] Fset_default
9.63% emacs emacs [.] Flength
6.54% emacs emacs [.] unbind_to
5.44% emacs emacs [.] hash_lookup
4.53% emacs emacs [.] Flet
You can try it too on your running sessions: "perf record -p PID" and
then "perf report". (just use something like "dotimes (i 1000000000)")
--
Peter
- bug#18522: 24.4.50; mapcar is very slow, (continued)
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/21
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/21
- bug#18522: 24.4.50; mapcar is very slow, Eli Zaretskii, 2016/02/21
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/21
- bug#18522: 24.4.50; mapcar is very slow, Eli Zaretskii, 2016/02/21
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/22
- bug#18522: 24.4.50; mapcar is very slow, Eli Zaretskii, 2016/02/22
- bug#18522: 24.4.50; mapcar is very slow,
Peter Münster <=
- bug#18522: 24.4.50; mapcar is very slow, Eli Zaretskii, 2016/02/22
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/23
- bug#18522: 24.4.50; mapcar is very slow, Eli Zaretskii, 2016/02/23
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/23
- bug#18522: 24.4.50; mapcar is very slow, Andreas Schwab, 2016/02/23
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/24
- bug#18522: 24.4.50; mapcar is very slow, Eli Zaretskii, 2016/02/23
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/24
- bug#18522: 24.4.50; mapcar is very slow, Eli Zaretskii, 2016/02/24
- bug#18522: 24.4.50; mapcar is very slow, Peter Münster, 2016/02/24