GNU bug report logs - #17219
24.3.50; wrong alignment when a list is given to dired

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Package: emacs;

Reported by: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>

Date: Mon, 7 Apr 2014 17:37:01 UTC

Severity: normal

Tags: confirmed

Found in version 24.3.50

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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From: Jakub Ječmínek <kuba <at> kubajecminek.cz>
To: Charalampos Mitrodimas <charmitro <at> posteo.net>
Cc: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>, Eli Zaretskii <eliz <at> gnu.org>, 17219 <at> debbugs.gnu.org
Subject: bug#17219: 24.3.50; wrong alignment when a list is given to dired
Date: Mon, 23 Dec 2024 17:52:54 +0000

Hello,

"Charalampos Mitrodimas" <charmitro <at> posteo.net> writes:

> What about performance? Depending on the size of the directory,
> recalculating alignment could have a minor performance impact.

There is. The largest directory I have on my machine has around 18k
files (~5GB) and the penalty is around 20ms. I've run the tests for both
functions in standalone Emacs session started using 'emacs -Q'. Below
are the profiling results:

Function Name     Call Count  Elapsed Time  Average Time
--------------------------------------------------------
dired-revert-new  10          5.2096629750  0.5209662975
dired-revert-old  10          5.051716523   0.5051716522

dired-revert-new  25          11.843308944  0.4737323577
dired-revert-old  25          11.391448779  0.4556579511


Please let me know if that's too high so we can find another way.
This bug report was last modified 184 days ago.

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