GNU bug report logs - #58558
29.0.50; re-search-forward is slow in some buffers

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Message #164 received at 58558 <at> debbugs.gnu.org (full text, mbox):

From: Ihor Radchenko <yantar92 <at> posteo.net>
To: Mattias Engdegård <mattias.engdegard <at> gmail.com>
Cc: 58558 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>,
 Ihor Radchenko <yantar92 <at> gmail.com>, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#58558: 29.0.50; re-search-forward is slow in some buffers
Date: Mon, 10 Apr 2023 09:57:48 +0000

Mattias Engdegård <mattias.engdegard <at> gmail.com> writes:

> Ihor, would you consider the possibility of regexp cache thrashing? It does occur from time to time; that cache is quite small. Try this instrumentation patch. (We should probably have something like it permanently.)

Generating agenda with Emacs master + your patch:

 :regexp-cache-hit: 6225399 :regexp-cache-miss: 109490

Emacs 28.3 + your patch:
 :regexp-cache-hit: 4968571 :regexp-cache-miss: 79637

Also, I tried to play around with increasing REGEXP_CACHE_SIZE in the
past. It does not make noticeable difference in my setup.

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

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