From: Jim Meyering <jim@meyering.net>
To: Nix <nix@esperi.org.uk>
Cc: "Óscar Fuentes" <ofv@wanadoo.es>,
"Stefan Monnier" <monnier@IRO.UMontreal.CA>,
emacs-devel@gnu.org
Subject: Re: [PATCH] Added inotify support.
Date: Sun, 14 Oct 2012 17:52:05 +0200 [thread overview]
Message-ID: <87lif98316.fsf@rho.meyering.net> (raw)
In-Reply-To: <87626ntowb.fsf@spindle.srvr.nix> (nix@esperi.org.uk's message of "Sat, 06 Oct 2012 19:51:32 +0100")
Nix wrote:
...
> Oh yes, indeed. I'm just arguing against ripping out polling and
> replacing it with inotify, really: we need at least a customization knob
> for people who know their filesystems are NFS-exported or otherwise
> network-affected to tweak to say 'poll, please'.
GNU tail's -f support has addressed precisely this problem
by distinguishing between file system types for which inotify
is known to work and those for which it does not work reliably.
It uses inotify only for a file system on which it is known to work,
polls for others, and warns about if the file system type is not known.
To see the list, look at coreutils/src/stat.c's S_MAGIC_* case
statements. The ones with "local" in the comment work with inotify,
the ones with admittedly poorly named "remote" in the comment
require that tail -f support use polling.
The only problem is that the list is a moving target.
New file system types arise regularly.
To give you an idea of the pace, there have been two additions
since the latest release, which was less than two months ago.
Here's the NEWS entry for those:
stat and tail know about ZFS, VZFS and VMHGFS. stat -f --format=%T now
reports the file system type, and tail -f now uses inotify for files on
ZFS and VZFS file systems, rather than the default (for unknown file
system types) of issuing a warning and reverting to polling. tail -f
still uses polling for files on VMHGFS file systems.
next prev parent reply other threads:[~2012-10-14 15:52 UTC|newest]
Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-03 22:34 [PATCH] Support for filesystem watching (inotify) Rüdiger Sonderfeld
2011-06-04 8:52 ` joakim
2011-06-04 16:40 ` Rüdiger Sonderfeld
2011-06-04 10:43 ` Jan Djärv
2011-06-04 23:36 ` [PATCH update2] " Rüdiger Sonderfeld
2011-06-05 5:45 ` Eli Zaretskii
2011-06-05 9:48 ` [PATCH update3] " Rüdiger Sonderfeld
2011-06-05 7:48 ` [PATCH update2] " Jan Djärv
2011-06-05 7:54 ` Andreas Schwab
2011-06-05 9:49 ` Rüdiger Sonderfeld
2011-06-05 15:59 ` John Yates
2011-06-05 16:14 ` Rüdiger Sonderfeld
2011-06-05 16:58 ` Eli Zaretskii
2011-06-06 18:56 ` Rüdiger Sonderfeld
2011-06-06 19:57 ` Eli Zaretskii
2011-06-04 11:30 ` [PATCH] " Eli Zaretskii
2011-06-04 17:13 ` [PATCH updated] " Rüdiger Sonderfeld
2011-06-04 19:15 ` Eli Zaretskii
2011-06-04 20:10 ` Thien-Thi Nguyen
2011-06-04 23:43 ` Rüdiger Sonderfeld
2011-06-05 2:15 ` Thien-Thi Nguyen
2011-06-05 9:22 ` Štěpán Němec
2011-06-15 20:53 ` Johan Bockgård
2011-06-16 8:52 ` Inlined cl functions -- how to learn about them Štěpán Němec
2011-06-06 15:21 ` [PATCH updated] Support for filesystem watching (inotify) Stefan Monnier
2011-06-06 16:25 ` Rüdiger Sonderfeld
2011-06-06 17:11 ` Stefan Monnier
2011-06-06 20:16 ` Ted Zlatanov
2011-06-07 14:42 ` Stefan Monnier
2011-06-07 16:46 ` Ted Zlatanov
2011-06-07 18:06 ` Stefan Monnier
2011-06-07 18:26 ` Ted Zlatanov
2011-06-24 0:50 ` Rüdiger Sonderfeld
2011-06-24 10:19 ` Ted Zlatanov
2011-06-24 12:18 ` Ted Zlatanov
2011-07-06 13:36 ` Stefan Monnier
2011-07-06 15:54 ` Paul Eggert
2011-07-06 18:30 ` Stefan Monnier
2011-07-06 20:39 ` Paul Eggert
2011-07-06 19:14 ` wide-int crash [was Re: [PATCH updated] Support for filesystem watching (inotify)] Glenn Morris
2011-07-06 22:31 ` Paul Eggert
2011-07-07 19:43 ` [PATCH updated] Support for filesystem watching (inotify) Stefan Monnier
2012-09-28 13:06 ` [PATCH] Added basic file system watching support Rüdiger Sonderfeld
2012-09-28 14:13 ` Stefan Monnier
2012-09-28 16:27 ` Rüdiger Sonderfeld
2012-10-01 4:38 ` Stefan Monnier
2012-10-01 7:24 ` Eli Zaretskii
2012-10-01 14:09 ` [PATCH] Added inotify support Rüdiger Sonderfeld
2012-10-01 16:27 ` Stefan Monnier
2012-10-02 21:28 ` Eli Zaretskii
2012-10-02 23:46 ` Óscar Fuentes
2012-10-03 2:10 ` Stefan Monnier
2012-10-03 3:54 ` Eli Zaretskii
2012-10-03 12:46 ` Stefan Monnier
2012-10-03 18:34 ` Eli Zaretskii
2012-10-03 18:47 ` Stefan Monnier
2012-10-03 19:08 ` Eli Zaretskii
2012-10-03 20:59 ` Stefan Monnier
2012-10-12 13:54 ` Eli Zaretskii
2012-10-14 14:55 ` Eli Zaretskii
2012-10-03 19:33 ` Óscar Fuentes
2012-10-05 7:40 ` Eli Zaretskii
2012-10-05 13:07 ` Óscar Fuentes
2012-10-05 15:19 ` Eli Zaretskii
2012-10-05 16:55 ` Nix
2012-10-05 17:15 ` Eli Zaretskii
2012-10-05 17:46 ` Nix
2012-10-05 18:22 ` Stefan Monnier
2012-10-05 18:30 ` Óscar Fuentes
2012-10-06 16:39 ` Nix
2012-10-06 17:01 ` Stefan Monnier
2012-10-06 18:51 ` Nix
2012-10-06 21:26 ` Stefan Monnier
2012-10-06 21:28 ` Nix
2012-10-07 7:38 ` Achim Gratz
2012-10-07 13:58 ` Stefan Monnier
2012-10-07 14:54 ` Achim Gratz
2012-10-07 8:24 ` Stephen J. Turnbull
2012-10-07 14:00 ` Stefan Monnier
2012-10-07 14:28 ` Óscar Fuentes
2012-10-07 14:38 ` Stefan Monnier
2012-10-08 7:07 ` Stephen J. Turnbull
2012-10-08 8:06 ` Eli Zaretskii
2012-10-14 15:52 ` Jim Meyering [this message]
2012-10-06 7:04 ` Stephen J. Turnbull
2012-10-06 7:23 ` Andreas Schwab
2012-10-06 16:41 ` Nix
2012-10-07 8:09 ` Stephen J. Turnbull
2012-10-07 14:08 ` Stefan Monnier
2012-10-03 3:57 ` Eli Zaretskii
2012-12-02 20:08 ` Eli Zaretskii
2012-12-03 17:18 ` Stefan Monnier
2012-12-10 14:16 ` Eli Zaretskii
2012-12-10 14:47 ` Stefan Monnier
2012-12-10 11:52 ` Eli Zaretskii
2012-12-10 12:11 ` Rüdiger Sonderfeld
2012-12-11 7:43 ` Michael Albinus
2012-12-11 8:20 ` Eli Zaretskii
2012-12-11 16:36 ` Michael Albinus
2012-12-11 16:46 ` Rüdiger Sonderfeld
2012-12-11 20:17 ` Michael Albinus
2012-12-11 7:54 ` [PATCH] Added basic file system watching support Michael Albinus
2012-12-11 8:12 ` Eli Zaretskii
2012-12-11 8:19 ` Michael Albinus
2012-12-11 8:29 ` Eli Zaretskii
2012-12-11 8:44 ` Michael Albinus
2012-12-11 9:39 ` Eli Zaretskii
2012-12-11 10:15 ` Eli Zaretskii
2012-12-11 10:38 ` Michael Albinus
2012-12-11 10:24 ` Michael Albinus
2012-12-11 12:51 ` Eli Zaretskii
2012-12-11 13:17 ` Michael Albinus
2012-12-11 13:23 ` Eli Zaretskii
2012-12-12 1:09 ` Leo
2012-12-12 3:57 ` Eli Zaretskii
2013-01-07 11:33 ` Michael Albinus
2013-01-07 15:57 ` Eli Zaretskii
2013-01-07 16:00 ` Michael Albinus
2013-01-07 20:26 ` Stefan Monnier
2013-01-08 7:44 ` Michael Albinus
2011-06-06 15:14 ` [PATCH updated] Support for filesystem watching (inotify) Stefan Monnier
2011-06-06 16:21 ` Rüdiger Sonderfeld
2012-09-18 11:50 ` [PATCH] " Leo
2012-09-26 12:15 ` Rüdiger Sonderfeld
2012-09-26 17:52 ` Stefan Monnier
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