GNU bug report logs - #66117
30.0.50; `find-buffer-visiting' is slow when opening large number of buffers

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From: Ihor Radchenko <yantar92 <at> posteo.net>
To: Dmitry Gutov <dmitry <at> gutov.dev>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 66117 <at> debbugs.gnu.org
Subject: bug#66117: 30.0.50; `find-buffer-visiting' is slow when opening large number of buffers
Date: Sun, 08 Oct 2023 11:25:20 +0000

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Dmitry Gutov <dmitry <at> gutov.dev> writes:

> On 08/10/2023 12:00, Ihor Radchenko wrote:
>> I am not sure if we really need to squeeze the
>> performance yet further from `find-buffer-visiting' - `file-attributes'
>> is taking pretty much no time:
>
> If file-attributes is the main source of consing, it could be the reason 
> for the line
>
>    924  36%   Automatic GC

No, the main source of consing, according to the memory profiler, is
`inhibit-local-variables-p':

    170,592,016  49% + inhibit-local-variables-p
     45,619,488  13% + string-match
     28,171,152   8% + insert-file-contents
     26,066,069   7% + file-name-sans-versions
     18,699,245   5% + file-remote-p

The full memory profile is attached.

[mem-profile-w-patch (application/octet-stream, attachment)]

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-- 
Ihor Radchenko // yantar92,
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Learn more about Org mode at <https://orgmode.org/>.
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