From: Ulrich Mueller <ulm@gentoo.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: kfogel@red-bean.com, dmantipov@yandex.ru,
yates@digitalsignallabs.com, emacs-devel@gnu.org
Subject: Re: emacs takes exhorbitantly long to read long, one-line files.
Date: Wed, 22 May 2013 07:10:38 +0200 [thread overview]
Message-ID: <20892.21326.472309.499588@a1i15.kph.uni-mainz.de> (raw)
In-Reply-To: <8361ycusiy.fsf@gnu.org>
>>>>> On Tue, 21 May 2013, Eli Zaretskii wrote:
>> I've done this test for a file with one line of 16 MB, and I get the
>> following times for the first and second commands (emacs -Q -nw in
>> an 80x24 xterm):
>>
>> Emacs 23.4: 4 s / 9 s
>> Emacs 24.3: 16 s / 34 s
>>
>> Is this degradation of performance expected?
> I see no degradation in performance: both 4 sec and 6 sec, let alone
> 9 and 34, are the same as infinity. You cannot have any useful
> editing with such reaction times to a simple cursor movement
> command. It is therefore meaningless to compare such "performance"
> figures and draw any conclusions from them.
Sure, the example with 16 MB in one line is unrealistic. I made it so,
simply because I wanted the times to be long enough to be measurable
with a stop watch.
But wouldn't the factors between 23.4 and 24.3 be similar for more
realistic examples?
Ulrich
next prev parent reply other threads:[~2013-05-22 5:10 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-19 3:52 emacs takes exhorbitantly long to read long, one-line files Randy Yates
2013-05-19 14:41 ` Eli Zaretskii
2013-05-20 8:40 ` Dmitry Antipov
2013-05-20 11:03 ` Randy Yates
2013-05-20 11:27 ` Dmitry Antipov
2013-05-20 14:32 ` Karl Fogel
2013-05-20 15:59 ` Eli Zaretskii
2013-05-20 16:25 ` Dmitry Antipov
2013-05-20 16:41 ` Eli Zaretskii
2013-05-20 21:43 ` Randy Yates
2013-05-21 2:21 ` Stephen J. Turnbull
2013-05-21 2:47 ` Eli Zaretskii
2013-05-21 7:57 ` Ulrich Mueller
2013-05-21 10:20 ` Dmitry Antipov
2013-05-21 12:06 ` Ulrich Mueller
2013-05-21 17:21 ` Eli Zaretskii
2013-05-21 17:18 ` Eli Zaretskii
2013-05-21 17:55 ` Eli Zaretskii
2013-05-21 18:03 ` Randy Yates
2013-05-21 18:28 ` Dmitry Antipov
2013-05-22 5:10 ` Ulrich Mueller [this message]
2013-05-22 14:51 ` Eli Zaretskii
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