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

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From: Michael Albinus <michael.albinus <at> gmx.de>
To: Ihor Radchenko <yantar92 <at> posteo.net>
Cc: Dmitry Gutov <dmitry <at> gutov.dev>, Eli Zaretskii <eliz <at> gnu.org>, 64735 <at> debbugs.gnu.org, sbaugh <at> janestreet.com
Subject: bug#64735: 29.0.92; find invocations are ~15x slower because of ignores
Date: Mon, 24 Jul 2023 09:59:28 +0200

Ihor Radchenko <yantar92 <at> posteo.net> writes:

Hi Ihor,

>> Tramp is just a stupid library, w/o own intelligence. It offers
>> alternative implementations for the set of primitive operations listed in
>> (info "(elisp) Magic File Names")
>
> This makes me wonder we can simply add a "find" file handler that will
> use find as necessary when GNU find executable is available.
>
>>> GNU find is faster simply because it is running on remote machine itself.
>>> But AFAIU, if TRAMP could convert repetitive network request for each
>>> directory into a single request, it would speed things up significantly.
>>
>> If you want something like this, you must add directory-files-recursively
>> to that list of primitive operations.
>
> So, it is doable, and not difficult. Good to know.

Technically it isn't difficult. But don't forget:

- We support already ~80 primitive operations.

- A new primitive operation must be handled by all Tramp backends, which
  could require up to 10 different implementations.

- I'm the only Tramp maintainer, for decades.

Best regards, Michael.

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