Re: tramp "too many open files" [Re: bug#56606

[Thierry Volpiatto <thievol@posteo.net>]

Madhu <enometh@meer.net> writes:

> The #56606 is archived and this may be unrelated and related to tramp,
> but I wanted to note I encoutered something similar on recent master
> (GNU Emacs 30.0.50 (build 2, x86_64-pc-linux-gnu, X toolkit, cairo
> version 1.16.0, Xaw3d scroll bars) of 2023-03-18) native compilation.
>
> Running the image after it compiled, when trying to save a zip file
> attachment in mew with y, I ran into the too many open files problem.
>
> ```
> $ lsof -n|wc -l
> 59510
> $ lsof -n |grep tramp|wc -l
> 4036
> ```
>
> most of the entries in lsof were
> ```
> COMMAND     PID   TID TASKCMD    USER   FD      TYPE             DEVICE    SIZE
> /OFF       NODE NAME
> emacs     30346 31097 gdbus     madhu  865r      REG               8,14       2
> 5318    1334064 /14/build/emacs/lisp/net/tramp-archive.elc
> emacs     30346 31097 gdbus     madhu  866r      REG               8,14       2
> 5318    1334064 /14/build/emacs/lisp/net/tramp-archive.elc
> emacs     30346 31097 gdbus     madhu  867r      REG               8,14       2
> 5318    1334064 /14/build/emacs/lisp/net/tramp-archive.elc
> emacs     30346 31097 gdbus     madhu  868r      REG               8,14       2
> ```
>
> Of course I could do nothing but kill the process. I updated mew to 6.9
> and tried the sequence again in a fresh emacs, but wasn't able to
> reproduce this (but hit a vertico bug instead)
>
> If this looks familiar, or if someone has a clue about it, please tell
> me. Maybe I should a bug report under the `tramp' product if I hit it
> again.

From the Helm help:

As Tramp archive often crash Helm and Emacs, Helm does its best
to disable it, however it is hard to do so as Tramp Archive is
enabled inconditionally in Emacs.  Here I build my Emacs
without-dbus to ensure Tramp archive wont kickin unexpectedly.


-- 
Thierry