Re: Landing feature/more-fds for Emacs 30?

[Robert Pluim <rpluim@gmail.com>]

>>>>> On Tue, 14 Mar 2023 12:09:37 -0400, Elliott Shugerman <eeshugerman@gmail.com> said:

    Elliott> Hi,
    Elliott> (Context:
    Elliott> https://lists.gnu.org/archive/html/emacs-devel/2022-05/msg00115.html)

    Elliott> I've been running this patch (rebased on emacs-29) on macOS ever since we added
    Elliott> it to homebrew-emacs-plus
    Elliott> <https://github.com/d12frosted/homebrew-emacs-plus/pull/510> (off by
    Elliott> default) a few months back. It's made a huge difference for me!

    Elliott> I work on a large codebase with LSP and used to run into the "too many open
    Elliott> files" error all the time unless I disabled desired functionality or gave
    Elliott> up native-comp. Now, with this patch, not only is that issue gone entirely,
    Elliott> but I find Emacs is generally more responsive and stable on macOS.

Thatʼs good to know. Iʼve not had a great deal of feedback on it.

    Elliott> More recently I installed this patch on my GNU/Linux box as well and have
    Elliott> noticed no differences at all there (which is good/expected because I've
    Elliott> only ever run into such issues on macOS, in part because I make heavier use
    Elliott> of it these days (reluctantly), but also due to technical differences IIUC).

The issue tends to happen when you have file notification turned on,
and the Linux kernel implementation of that scales better than the
macOS one (unless we switch to the new macOS notification api, but we
already have 3 different ones...)

    Elliott> Anyway, that's all to say, thanks for this patch! And... can it be merged
    Elliott> now that emacs-29 is cut? :)

Not as is. There are a number of other parts of Emacs that need
adapting to the possibility if having >1024 open filedescriptors. I
have most of that done, but as usual Real Life™ interferes.

Iʼll see if I can schedule some time to finish it off. After all,
Emacs 30 needs some changes that can cause instability in fundamental
code ;-)

Robert
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