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bug#8890: 23.3; message writing slows emacs
From: |
Dave Abrahams |
Subject: |
bug#8890: 23.3; message writing slows emacs |
Date: |
Thu, 15 Sep 2011 22:22:45 -0400 |
User-agent: |
Gnus/5.110018 (No Gnus v0.18) Emacs/23.3 (darwin) |
on Sun Sep 11 2011, Dave Abrahams <dave-AT-boostpro.com> wrote:
> on Sun Sep 11 2011, Eli Zaretskii <eliz-AT-gnu.org> wrote:
>
>>> From: Lars Magne Ingebrigtsen <larsi@gnus.org>
>>
>>> Cc: Eli Zaretskii <eliz@gnu.org>, 8890@debbugs.gnu.org
>>> Date: Sun, 11 Sep 2011 16:52:56 +0200
>>>
>>> Emacs does clever screen updates, though. So if the only thing that
>>> changes is the number before the percentage, Emacs won't repaint the
>>> entire line, I think?
>>
>> True. Like I said, redisplay of the echo area is very fast.
>
> I don't think it's clever enough. Try this:
> (let (timings)
> (dolist (reps '(1 10))
> (let ((start-time (current-time)))
> (loop for x to 10000 do
> (loop repeat reps do
> (message "message #%s" x)))
> (push (time-subtract (current-time) start-time) timings)))
> (message "%s" (mapcar 'time-to-seconds timings)))
> I get (29.539774 2.514761)
>
> I think this shows that it takes (more than) 10x as long to write out
> the same message 10 times as it does to write it out once.
<bump>
The above looks to me like conclusive evidence that writing out the same
percentage many times as part of a progress indication, rather than,
say, updating progress information once per second, will slow things
down a lot... and that's not a Gnus-specific problem. *I* think this is
important, anyway.
--
Dave Abrahams
BoostPro Computing
http://www.boostpro.com
- bug#8890: 23.3; message writing slows emacs, Lars Magne Ingebrigtsen, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Dave Abrahams, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Eli Zaretskii, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Dave Abrahams, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Eli Zaretskii, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Dave Abrahams, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Lars Magne Ingebrigtsen, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Eli Zaretskii, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Dave Abrahams, 2011/09/11
- bug#8890: 23.3; message writing slows emacs,
Dave Abrahams <=
- bug#8890: 23.3; message writing slows emacs, Eli Zaretskii, 2011/09/16
- bug#8890: 23.3; message writing slows emacs, Lars Magne Ingebrigtsen, 2011/09/11
- bug#8890: 23.3; message writing slows emacs, Stefan Monnier, 2011/09/16
- bug#8890: 23.3; message writing slows emacs, Eli Zaretskii, 2011/09/16
- bug#8890: 23.3; message writing slows emacs, Stefan Monnier, 2011/09/16
- bug#8890: 23.3; message writing slows emacs, Dave Abrahams, 2011/09/16
- bug#8890: 23.3; message writing slows emacs, Lars Magne Ingebrigtsen, 2011/09/17
- bug#8890: 23.3; message writing slows emacs, Dave Abrahams, 2011/09/17
- bug#8890: 23.3; message writing slows emacs, Eli Zaretskii, 2011/09/17
- bug#8890: 23.3; message writing slows emacs, Lars Magne Ingebrigtsen, 2011/09/17