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From: Eli Zaretskii <eliz@gnu.org>
To: Anders Lindgren <andlind@gmail.com>
Cc: michael.albinus@gmx.de, 22814@debbugs.gnu.org
Subject: bug#22814: 25.0.91; Emacs runs out of file descriptors on OS X
Date: Sat, 27 Feb 2016 21:14:23 +0200	[thread overview]
Message-ID: <83lh66aru8.fsf@gnu.org> (raw)
In-Reply-To: <CABr8ebb3tLWLvm9t_atcPt0pTG_USfKp2H74Gr7OJymd_fDbtw@mail.gmail.com> (message from Anders Lindgren on Sat, 27 Feb 2016 20:00:30 +0100)

> Date: Sat, 27 Feb 2016 20:00:30 +0100
> From: Anders Lindgren <andlind@gmail.com>
> Cc: Eli Zaretskii <eliz@gnu.org>, 22814@debbugs.gnu.org
> 
> I don't think the problem is what kqueue does when it run out of file descriptors, but how the rest of the Emacs
> process acts when this happens. For example, can it even read and write files? Can subprocesses be
> started?

Even if it can't, it shouldn't hang.  It could signal an error for any
operation that needs a file descriptor, but it shouldn't hang.  Then
the user could kill one of the buffers under auto-revert, or manually
switch to not using notifications, and be able to continue the
session.

Btw, my recommendation is to turn off auto-revert-use-notify in any
session that uses global-auto-revert-mode.  File notifications simply
don't scale up well enough for that, given that Emacs sessions tend to
run for many weeks and have many hundreds of file-visiting buffers.
Also, if you somehow end up visiting a file in /tmp, your Emacs will
get notifications about every temp file operation on the OS, which
will probably slow it down quite a lot.





  parent reply	other threads:[~2016-02-27 19:14 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-26  6:18 bug#22814: 25.0.91; Emacs runs out of file descriptors on OS X David Caldwell
2016-02-26  8:34 ` Michael Albinus
2016-02-26  9:05   ` David Caldwell
2016-02-26 10:26     ` Nicolas Richard
2016-02-26  9:22   ` Eli Zaretskii
2016-02-26 20:05     ` Michael Albinus
2016-02-26  9:04 ` Eli Zaretskii
2016-02-26 20:51 ` Anders Lindgren
2016-02-27  8:00   ` Michael Albinus
2016-02-27  9:19     ` Eli Zaretskii
2016-02-27 13:26       ` Michael Albinus
2016-02-27 19:00         ` Anders Lindgren
2016-02-27 19:12           ` Michael Albinus
2016-02-27 19:17             ` Eli Zaretskii
2016-02-27 19:33               ` Michael Albinus
2016-02-27 19:39                 ` Eli Zaretskii
2016-02-27 19:51                   ` Michael Albinus
2016-02-27 19:58                     ` Eli Zaretskii
2016-02-27 20:06                       ` Michael Albinus
2016-02-27 20:25                         ` Eli Zaretskii
2016-02-28  9:57                           ` Michael Albinus
2016-02-28 15:51                             ` Eli Zaretskii
2016-02-27 19:14           ` Eli Zaretskii [this message]
2016-02-27 19:26             ` Michael Albinus
2016-02-27 19:36               ` Eli Zaretskii
2016-02-27 19:39                 ` Michael Albinus
2016-02-27 19:56                 ` Michael Albinus
2016-02-27 20:06                   ` Eli Zaretskii
2016-02-29 10:24                     ` Michael Albinus
2016-02-29 16:02                       ` Eli Zaretskii
2016-03-02 15:03                         ` Michael Albinus
2016-03-02 16:01                           ` Eli Zaretskii
2016-03-04  7:53                             ` Michael Albinus
2016-03-04  8:14                               ` John Wiegley
2016-03-04  8:29                               ` Eli Zaretskii
2016-03-04 14:05                                 ` Michael Albinus
2016-03-04 14:11                             ` Michael Albinus
2016-04-10  8:21                               ` Michael Albinus
2016-04-10 20:37                                 ` Anders Lindgren
2016-04-11  6:40                                   ` Michael Albinus
2016-04-11  6:48                                     ` Anders Lindgren
2016-04-11  6:58                                       ` Michael Albinus
2016-04-11 18:59                                         ` Anders Lindgren
2016-04-12  7:44                                           ` Michael Albinus
2016-02-27  9:55     ` Anders Lindgren
2016-02-27 10:46       ` Eli Zaretskii
2016-02-27 11:38         ` Anders Lindgren
2016-02-27 12:17           ` Michael Albinus
2016-02-27 12:40             ` Eli Zaretskii
2016-02-27 12:49               ` Michael Albinus
2016-02-27 12:52                 ` Eli Zaretskii
2016-02-27 13:00                   ` Michael Albinus
2016-03-05  0:32 ` Paul Eggert

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