From: Michael Albinus <michael.albinus@gmx.de>
Date: Fri, 26 Feb 2016 20:00:28 +0000 (+0100)
Subject: etc/PROBLEMS: Mention problems with using file descriptors
X-Git-Tag: emacs-25.0.92~31
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=b5db8e0;p=emacs.git

etc/PROBLEMS: Mention problems with using file descriptors

* etc/PROBLEMS: Mention problems with using file descriptors
of kqueue file notification library.
---

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 7d780371d46..0491935b10c 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -600,6 +600,16 @@ you have a personal configuration file (normally ~/.aspell.conf), it
 can cause this error.  Remove that file, execute 'ispell-kill-ispell'
 in Emacs, and then try spell-checking again.
 
+*** Emacs eats all file descriptors when using kqueue file notifications.
+
+When you have a large number of buffers running auto-revert-mode, and
+Emacs is configured to use the kqueue file notification library, it
+uses an own file descriptor for every watched file.  On systems with a
+small limit of file descriptors allowed per process, like OS X, you
+could run out of file descriptors.  You won't be able to open new files.
+
+Set auto-revert-use-notify to nil in order to avoid this problem.
+
 * Runtime problems related to font handling
 
 ** Characters are displayed as empty boxes or with wrong font under X.