GNU bug report logs - #64735
29.0.92; find invocations are ~15x slower because of ignores

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From: Dmitry Gutov <dmitry <at> gutov.dev>
To: Ihor Radchenko <yantar92 <at> posteo.net>
Cc: sbaugh <at> janestreet.com, Eli Zaretskii <eliz <at> gnu.org>, 64735 <at> debbugs.gnu.org
Subject: bug#64735: 29.0.92; find invocations are ~15x slower because of ignores
Date: Fri, 21 Jul 2023 18:41:29 +0300

On 21/07/2023 16:46, Ihor Radchenko wrote:
> Dmitry Gutov <dmitry <at> gutov.dev> writes:
> 
>> On 21/07/2023 16:34, Ihor Radchenko wrote:
>>> Dmitry Gutov<dmitry <at> gutov.dev>  writes:
>>>
>>>> On 21/07/2023 15:58, Ihor Radchenko wrote:
>>>>> Dmitry Gutov<dmitry <at> gutov.dev>   writes:
>>>>>
>>>>>>>> Disabling file-handlers is inconceivable in Emacs.
>>>>>>> Indeed. But we are talking about Emacs find vs. GNU find here.
>>>>>>> In the scenarios where GNU find can be used, it is also safe to disable
>>>>>>> file handlers, AFAIU.
>>> So, we agree here? (I've read your reply as counter-argument to mine.)
>>>
>>
>> We don't, IIUC.
>>
>> To use GNU find on a remote host, you need to have the file handlers
>> enabled.
> 
> Let me clarify then.
> I was exploring the possibility to replace GNU find with
> `find-lisp-find-files'.
> 
> Locally, AFAIU, running `find-lisp-find-files' without
> `file-name-handler-alist' is equivalent to running GNU find.
> (That was a reply to Eli's message that we cannot disable
> `file-name-handler-alist')

But it's slower! At least 2x, even with file handlers disabled. 
According to your own measurements, with a modern SSD (not to mention 
all of our users with spinning media).

> Although, it will likely not
> be usable then - running GNU find on remote host is going to be
> unbeatable compared to repetitive TRAMP queries for file listing.

That's right.

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