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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 12:20:21 +0000 |
Michael Albinus <michael.albinus@gmx.de> writes:
>> Or, alternatively, may we fence the regexp matches in
>> `file-name-handler-alist' behind boolean switches?
>> I examined what the actual handlers do, and I can see
>> `jka-compr-inhibit', `epa-inhibit', `tramp-archive-enabled',
>> and `tramp-mode' are used to force-execute the original handler. If we
>> could make Emacs perform these checks earlier, the whole expensive
>> regexp matching phase could be bypassed.
>
> 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)) ...))
> And there is also the case, that due to inhibit-file-name-handlers and
> inhibit-file-name-operation we can allow a remote file name operation
> for a given function, and disable it for another function. Tramp uses
> this mechanism. The general flag tramp-mode is not sufficient for this
> scenario.
I am not sure if I understand completely, but it does not appear that
this is used often during ordinary file operations that do not involve
tramp.
--
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>
- 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, Ihor Radchenko, 2023/07/21
- bug#64735: 29.0.92; find invocations are ~15x slower because of ignores, Dmitry Gutov, 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, Dmitry Gutov, 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, Michael Albinus, 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, Ihor Radchenko, 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, 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