From: "Peter Münster" <pmlists@free.fr>
To: Eli Zaretskii <eliz@gnu.org>
Cc: larsi@gnus.org, 18522@debbugs.gnu.org
Subject: bug#18522: 24.4.50; mapcar is very slow
Date: Sun, 21 Feb 2016 12:00:07 +0100 [thread overview]
Message-ID: <87h9h2xr9k.fsf@roche-blanche.net> (raw)
In-Reply-To: <8738bkdjqg.fsf@micropit.roche-blanche.homenet.org>
On Sat, Feb 20 2016, Eli Zaretskii wrote:
> I'd start with profiler.el, to profile the Lisp portions of the
> function. It's probably best to load the .el file first and profile
> that, although this could skew the profile (because the byte-compiled
> version behaves differently).
Here are 2 profiler reports. The first one, where parse-time-string is
very slow:
--8<---------------cut here---------------start------------->8---
- command-execute 8396 93%
- call-interactively 8396 93%
- funcall-interactively 7881 88%
- eval-expression 7848 87%
- eval 7848 87%
- let 7848 87%
- while 7848 87%
- parse-time-string 7840 87%
- let 7836 87%
- parse-time-tokenize 7089 79%
- let 7073 79%
- while 7057 78%
- while 6959 77%
- and 6891 77%
- setq 4445 49%
- parse-time-string-chars 4413 49%
- let 4301 48%
- unwind-protect 4189 46%
- progn 4141 46%
- let 436 4%
- cond 408 4%
- string-match 96 1%
setq 68 0%
set-match-data 4 0%
- not 2338 26%
- setq 2310 25%
- parse-time-string-chars 2282 25%
- let 2258 25%
- unwind-protect 2170 24%
- progn 2126 23%
- let 176 1%
- cond 160 1%
- string-match 24 0%
setq 16 0%
--8<---------------cut here---------------end--------------->8---
And this one from "emacs -Q":
--8<---------------cut here---------------start------------->8---
- command-execute 2643 90%
- call-interactively 2643 90%
- funcall-interactively 2221 75%
- eval-expression 2013 68%
- eval 2013 68%
- let 2013 68%
- while 2013 68%
- parse-time-string 2002 68%
- let 2002 68%
- parse-time-tokenize 1291 44%
- let 1283 43%
- while 1272 43%
- while 1112 38%
- and 1044 35%
- setq 640 21%
- parse-time-string-chars 608 20%
- let 557 19%
- unwind-protect 461 15%
- progn 401 13%
- let 345 11%
- cond 285 9%
- string-match 56 1%
setq 40 1%
set-match-data 16 0%
- not 288 9%
- setq 268 9%
- parse-time-string-chars 244 8%
- let 208 7%
- unwind-protect 192 6%
- progn 152 5%
- let 120 4%
- cond 112 3%
- string-match 32 1%
setq 32 1%
set-match-data 4 0%
--8<---------------cut here---------------end--------------->8---
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?
--
Peter
next prev parent reply other threads:[~2016-02-21 11:00 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-22 10:37 bug#18522: 24.4.50; mapcar is very slow Peter Münster
2014-09-22 10:43 ` bug#18522: further information Peter Münster
2014-09-22 12:49 ` bug#18522: 24.4.50; mapcar is very slow Stefan Monnier
2014-09-22 13:47 ` Peter Münster
2014-09-25 21:36 ` Peter Münster
2014-09-26 6:57 ` Eli Zaretskii
2014-09-26 7:15 ` Peter Münster
2014-09-26 7:36 ` Eli Zaretskii
2014-10-01 19:55 ` Peter Münster
2014-10-01 19:58 ` Glenn Morris
2014-10-01 20:25 ` Peter Münster
2015-02-13 8:26 ` Lars Ingebrigtsen
2015-02-13 14:39 ` Peter Münster
2015-02-14 4:19 ` Lars Ingebrigtsen
2015-03-02 14:34 ` Peter Münster
2015-07-20 12:52 ` Peter Münster
2016-02-07 6:31 ` Lars Ingebrigtsen
2016-02-17 16:00 ` Peter Münster
2016-02-19 5:15 ` Lars Ingebrigtsen
2016-02-19 8:27 ` Peder O. Klingenberg
2016-02-19 8:38 ` Eli Zaretskii
2016-02-19 10:06 ` Nicolas Richard
2016-02-19 10:12 ` Peder O. Klingenberg
2016-02-19 22:46 ` Lars Ingebrigtsen
2016-02-20 8:14 ` Eli Zaretskii
2016-02-20 8:33 ` Peter Münster
2016-02-20 9:51 ` Eli Zaretskii
2016-02-21 11:00 ` Peter Münster [this message]
2016-02-21 11:08 ` Andreas Schwab
2016-02-21 11:09 ` martin rudalics
2016-02-21 11:30 ` Peter Münster
2016-02-21 13:41 ` Michael Heerdegen
2016-02-21 14:02 ` Peter Münster
2016-02-21 14:36 ` Peter Münster
2016-02-21 14:54 ` Peter Münster
2016-02-21 16:14 ` Eli Zaretskii
2016-02-21 18:03 ` Peter Münster
2016-02-21 20:45 ` Eli Zaretskii
2016-02-22 7:37 ` Peter Münster
2016-02-22 16:22 ` Eli Zaretskii
2016-02-22 20:41 ` Peter Münster
2016-02-22 20:56 ` Eli Zaretskii
2016-02-23 11:19 ` Peter Münster
2016-02-23 16:23 ` Eli Zaretskii
2016-02-23 16:35 ` Peter Münster
2016-02-23 16:48 ` Andreas Schwab
2016-02-24 10:22 ` Peter Münster
2016-02-23 17:47 ` Eli Zaretskii
2016-02-24 10:25 ` Peter Münster
2016-02-24 17:39 ` Eli Zaretskii
2016-02-24 18:00 ` Peter Münster
2016-02-24 18:23 ` Eli Zaretskii
2016-02-24 20:03 ` Peter Münster
2016-02-24 20:26 ` Eli Zaretskii
2016-02-25 8:06 ` Peter Münster
2016-02-24 23:53 ` Lars Ingebrigtsen
2016-02-25 8:08 ` Peter Münster
2016-02-25 15:59 ` Eli Zaretskii
2016-02-25 18:10 ` Peter Münster
2016-02-25 18:25 ` Eli Zaretskii
2016-02-26 11:05 ` Peter Münster
2016-02-26 11:13 ` Eli Zaretskii
2016-02-26 11:35 ` Peter Münster
2016-02-28 4:10 ` Lars Ingebrigtsen
2016-02-28 8:07 ` Peter Münster
2016-02-28 15:48 ` Eli Zaretskii
2016-02-29 2:21 ` Lars Ingebrigtsen
2016-02-29 10:33 ` bug#18522: killed buffers not GCed (was: bug#18522: 24.4.50; mapcar is very slow) Peter Münster
2016-02-28 5:12 ` bug#18522: 24.4.50; mapcar is very slow Lars Ingebrigtsen
2016-02-26 3:18 ` Lars Ingebrigtsen
2016-02-26 3:13 ` Lars Ingebrigtsen
2016-02-26 8:48 ` Eli Zaretskii
2016-02-28 4:02 ` Lars Ingebrigtsen
2016-02-26 9:28 ` Eli Zaretskii
2016-02-28 4:04 ` Lars Ingebrigtsen
2017-01-25 20:09 ` Lars Ingebrigtsen
2017-01-25 20:39 ` Peter Münster
2016-02-24 10:15 ` martin rudalics
2016-02-24 17:42 ` Eli Zaretskii
2016-02-24 18:16 ` martin rudalics
2016-02-24 18:49 ` martin rudalics
2016-02-24 20:27 ` Eli Zaretskii
2016-02-25 8:07 ` Peter Münster
2016-02-25 10:06 ` martin rudalics
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