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bug#64735: 29.0.92; find invocations are ~15x slower because of ignores
From: |
Ihor Radchenko |
Subject: |
bug#64735: 29.0.92; find invocations are ~15x slower because of ignores |
Date: |
Fri, 21 Jul 2023 12:25:29 +0000 |
Ihor Radchenko <yantar92@posteo.net> writes:
>> Hmm, this would mean to extend the file-name-handler-alist spec. Instead
>> of a regexp to check, we would need to allow a function call or
>> alike. Don't know whether this pays for optimization.
>
> The question is: what is more costly
> (a) matching complex regexp && call function or
> (b) call function (lambda (fn) (when (and foo (match-string- ... fn)) ...))
(benchmark-run-compiled 10000000 (string-match-p (caar file-name-handler-alist)
"/path/to/very/deep/file"))
;; => (1.495432981 0 0.0)
(benchmark-run-compiled 10000000 (funcall (lambda (fn) (and nil (string-match-p
(caar file-name-handler-alist) fn))) "/path/to/very/deep/file"))
;; => (0.42053276500000003 0 0.0)
Looks like even funcall overheads are not as bad as invoking regexp search.
--
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
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- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, (continued)
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Michael Albinus, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Eli Zaretskii, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Michael Albinus, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Ihor Radchenko, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Michael Albinus, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Ihor Radchenko, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores,
Ihor Radchenko <=
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Eli Zaretskii, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Michael Albinus, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Ihor Radchenko, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Michael Albinus, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Ihor Radchenko, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Michael Albinus, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Eli Zaretskii, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Michael Albinus, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Ihor Radchenko, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Eli Zaretskii, 2023/07/21