From: Tassilo Horn <tassilo@member.fsf.org>
To: emacs-orgmode@gnu.org
Subject: Re: Fixing slowness of following Gnus links to IMAP articles
Date: Wed, 28 Jul 2010 08:36:57 +0200 [thread overview]
Message-ID: <87fwz4159y.fsf@thinkpad.tsdh.de> (raw)
In-Reply-To: 874ofkoekr.wl%dmaus@ictsoc.de
David Maus <dmaus@ictsoc.de> writes:
Hi David,
>>I'm trying to add a workaround to org-gnus.el which should save the
>>slowness of querying the IMAP server by looking up the article number
>>in the group's .overview file. But since I don't have nnimap groups,
>>we have to play some question & answer game. ;-)
>
>>Please apply this patch and set
>>`org-gnus-nnimap-query-article-no-from-file' to t.
>
> The patch does not work: It calls `nnimap-retrieve-headers-from-file'
> without the required arguments (group server)
Argh, stupid me! Here's a corrected patch.
--8<---------------cut here---------------start------------->8---
diff --git a/lisp/org-gnus.el b/lisp/org-gnus.el
index 7ec305b..7a339cd 100644
--- a/lisp/org-gnus.el
+++ b/lisp/org-gnus.el
@@ -55,6 +55,16 @@ negates this setting for the duration of the command."
:group 'org-link-store
:type 'boolean)
+(defcustom org-gnus-nnimap-query-article-no-from-file nil
+ "If non-nil, `org-gnus-follow-link' will try to translate
+Message-Ids to article numbers by querying the .overview file.
+Normally, this translation is done by querying the IMAP server,
+which is usually very fast. Unfortunately, some (maybe badly
+configured) IMAP servers don't support this operation quickly.
+So if following a link to a Gnus article takes ages, try setting
+this variable to `t'."
+ :group 'org-link-store
+ :type 'boolean)
;; Install the link type
(org-add-link-type "gnus" 'org-gnus-open)
@@ -173,7 +183,11 @@ If `org-store-link' was called with a prefix arg the meaning of
(cond ((and group article)
(gnus-activate-group group t)
(condition-case nil
- (let ((backend (car (gnus-find-method-for-group group))))
+ (let* ((method (gnus-find-method-for-group group))
+ (backend (car method))
+ (server (cadr method)))
+ (message "method = %s\ngroup = %s\nbackend = %s\nserver = %s"
+ method group backend server)
(cond
((eq backend 'nndoc)
(if (gnus-group-read-group t nil group)
@@ -183,6 +197,12 @@ If `org-store-link' was called with a prefix arg the meaning of
(t
(let ((articles 1)
group-opened)
+ ;; work arround IMAP servers that perform badly in
+ ;; SEARCH commands.
+ (when (and (eq backend 'nnimap)
+ org-gnus-nnimap-query-article-no-from-file)
+ (let ((headers (nnimap-retrieve-headers-from-file group server)))
+ (message "headers = %s" headers)))
(while (and (not group-opened)
;; stop on integer overflows
(> articles 0))
--8<---------------cut here---------------end--------------->8---
> and the headers are not fetched because
> `nnimap-retrieve-headers-from-file' looks for a NOV cache file, not
> .overview.
Aren't overview file and NOV file synonyms?
Hm, anyway. In the Gnus docs I've found this paragraph:
,----[ (info "(gnus)IMAP") ]
| `nnimap-nov-is-evil'
| Never generate or use a local NOV database. Defaults to the value
| of `gnus-agent'.
|
| Using a NOV database usually makes header fetching much faster,
| but it uses the `UID SEARCH UID' command, which is very slow on
| some servers (notably some versions of Courier). Since the Gnus
| Agent caches the information in the NOV database without using the
| slow command, this variable defaults to true if the Agent is in
| use, and false otherwise.
`----
So maybe we're trying to replace one slow command with another slow
command. Especially, the fact that Courier is explicitly mentioned is a
bit frustrating. Well, let's try it out and see if it helps a bit.
> Alas: I couldn't figure out how to enable NOV cache for my nnimap
> group. Setting `nnimap-nov-is-evil' to nil didn't help.
This variable defaults to the value of `gnus-agent', so I assume the
agent has to be enabled (which is default), and most probably the IMAP
server has to be agentized as well. That can be done in the server
buffer (`^' in *Group*), and then:
,----[ (info "(gnus)Server Agent Commands") ]
| `J a'
| Add the current server to the list of servers covered by the Gnus
| Agent (`gnus-agent-add-server').
`----
Bye,
Tassilo
next prev parent reply other threads:[~2010-07-28 6:37 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-28 9:38 Behavior of Gnus when called from an hyperlink Sébastien Vauban
2010-06-28 10:19 ` Tassilo Horn
2010-06-28 11:36 ` Leo
2010-06-28 11:49 ` Carsten Dominik
2010-06-28 12:47 ` Bernt Hansen
2010-06-28 13:57 ` Greg Troxel
2010-06-28 19:44 ` [PATCH] Add customization for WL in `org-link-frame-setup' David Maus
2010-06-29 4:42 ` Carsten Dominik
2010-06-28 19:44 ` [PATCH] Add customization option to open WL links in other frame David Maus
2010-06-30 10:12 ` Behavior of Gnus when called from an hyperlink Noorul Islam K M
2010-07-02 4:44 ` Carsten Dominik
2010-07-02 8:21 ` Leo
2010-07-02 8:21 ` Bastien
2010-07-02 11:59 ` Bernt Hansen
2010-06-28 12:05 ` Sébastien Vauban
2010-06-28 12:51 ` Sébastien Vauban
2010-06-28 14:39 ` Nick Dokos
2010-06-28 14:51 ` Sébastien Vauban
2010-06-28 15:19 ` Nick Dokos
2010-06-28 18:32 ` Tassilo Horn
2010-07-15 21:27 ` Sébastien Vauban
2010-07-16 7:50 ` Tassilo Horn
2010-07-16 11:39 ` Sébastien Vauban
2010-07-16 18:11 ` Nick Dokos
2010-07-16 19:23 ` Sébastien Vauban
2010-07-16 19:51 ` Sébastien Vauban
2010-07-17 7:18 ` Tassilo Horn
2010-07-17 16:02 ` Nick Dokos
2010-07-17 19:59 ` Sébastien Vauban
2010-07-17 20:49 ` Nick Dokos
2010-07-17 21:34 ` Sébastien Vauban
2010-07-17 22:15 ` Sébastien Vauban
2010-07-19 8:11 ` Tassilo Horn
2010-07-19 12:02 ` David Maus
2010-07-19 20:37 ` Sébastien Vauban
2010-07-20 6:23 ` David Maus
2010-07-21 19:59 ` Sébastien Vauban
2010-07-22 12:31 ` Tassilo Horn
2010-07-26 13:17 ` David Maus
2010-07-26 15:12 ` Tassilo Horn
2010-07-26 18:47 ` Tassilo Horn
2010-07-27 6:45 ` Fixing slowness of following Gnus links to IMAP articles (was: Behavior of Gnus when called from an hyperlink) Tassilo Horn
2010-07-27 20:27 ` David Maus
2010-07-27 21:18 ` Nick Dokos
2010-07-28 6:50 ` Fixing slowness of following Gnus links to IMAP articles Tassilo Horn
2010-07-29 7:33 ` David Maus
2010-07-29 18:06 ` Tassilo Horn
2010-07-30 20:03 ` Sébastien Vauban
2010-08-15 18:52 ` David Maus
2010-09-08 15:09 ` Sébastien Vauban
2010-09-08 19:08 ` David Maus
2010-09-08 21:42 ` Sébastien Vauban
2010-09-09 12:19 ` David Maus
2010-10-01 0:53 ` Matt Lundin
2010-10-11 18:33 ` David Maus
2010-08-01 8:38 ` David Maus
2010-07-28 6:36 ` Tassilo Horn [this message]
2010-07-31 8:34 ` Patchwork: Patch 176 Accepted Bastien Guerry
2010-07-31 18:21 ` Tassilo Horn
2010-07-31 23:52 ` Bastien
2010-08-03 8:01 ` Fixing slowness of following Gnus links to IMAP articles Sébastien Vauban
2010-08-05 18:21 ` Tassilo Horn
2010-07-20 11:50 ` Behavior of Gnus when called from an hyperlink Tassilo Horn
2010-07-21 19:28 ` Sébastien Vauban
2010-07-20 12:08 ` Bernt Hansen
2010-07-20 16:11 ` Tassilo Horn
2010-07-21 19:38 ` Sébastien Vauban
2010-07-22 12:29 ` Tassilo Horn
2010-07-22 13:51 ` Matt Lundin
2010-07-22 19:29 ` Sébastien Vauban
2010-07-22 19:21 ` Sébastien Vauban
2010-07-22 20:11 ` Tassilo Horn
2010-07-23 8:54 ` Giovanni Ridolfi
2010-07-23 10:40 ` Tassilo Horn
2010-07-24 22:32 ` Sébastien Vauban
2010-07-21 19:33 ` Sébastien Vauban
2010-07-21 23:30 ` Bernt Hansen
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