From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/66758 Path: news.gmane.org!not-for-mail From: Daniel Pittman Newsgroups: gmane.emacs.gnus.general Subject: Re: Exchange 2007 Issue Entering Large Groups Date: Thu, 10 Apr 2008 13:05:40 +1000 Organization: Cybersource: Australia's Leading Linux and Open Source Solutions Company Message-ID: <87prsyo1dn.fsf@rimspace.net> References: <76zls4nszz.fsf@dev-d01.ppllc.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1207797491 4612 80.91.229.12 (10 Apr 2008 03:18:11 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 10 Apr 2008 03:18:11 +0000 (UTC) To: ding@gnus.org Original-X-From: ding-owner+M15241@lists.math.uh.edu Thu Apr 10 05:18:43 2008 Return-path: Envelope-to: ding-account@gmane.org Original-Received: from util0.math.uh.edu ([129.7.128.18]) by lo.gmane.org with esmtp (Exim 4.50) id 1JjnJB-0004JR-Rs for ding-account@gmane.org; Thu, 10 Apr 2008 05:18:42 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.math.uh.edu) by util0.math.uh.edu with smtp (Exim 4.63) (envelope-from ) id 1JjnI5-0003OO-HJ; Wed, 09 Apr 2008 22:17:33 -0500 Original-Received: from mx2.math.uh.edu ([129.7.128.33]) by util0.math.uh.edu with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1JjnI4-0003OC-AY for ding@lists.math.uh.edu; Wed, 09 Apr 2008 22:17:32 -0500 Original-Received: from quimby.gnus.org ([80.91.231.51]) by mx2.math.uh.edu with esmtp (Exim 4.67) (envelope-from ) id 1JjnHy-0002eN-3S for ding@lists.math.uh.edu; Wed, 09 Apr 2008 22:17:32 -0500 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by quimby.gnus.org with esmtp (Exim 3.35 #1 (Debian)) id 1JjnI7-0008KU-00 for ; Thu, 10 Apr 2008 05:17:35 +0200 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1JjnHv-0006K9-PX for ding@gnus.org; Thu, 10 Apr 2008 03:17:23 +0000 Original-Received: from eth3548.vic.adsl.internode.on.net ([59.167.195.219]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 10 Apr 2008 03:17:23 +0000 Original-Received: from daniel by eth3548.vic.adsl.internode.on.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 10 Apr 2008 03:17:23 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 26 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: eth3548.vic.adsl.internode.on.net User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/23.0.60 (gnu/linux) Cancel-Lock: sha1:+s1xbH98xguJq7d8CR1Yqzxh9Zo= X-Spam-Score: -2.6 (--) List-ID: Precedence: bulk Xref: news.gmane.org gmane.emacs.gnus.general:66758 Archived-At: Jake Colman writes: > This post is a follow-up to a series of posts regarding issues using > Gnus with Exchange 2007. Most of the IMAP issues have been fixed with > the patches already included in the CVS version of Gnus. The major > remaining issue is this: entering a group with a very large number of > read messages takes a very long time. I recently upgraded my IMAP service from Cyrus to the Zimbra IMAP server; it uses sparse UID allocation for messages which causes some interesting behaviour in Gnus -- I trivially get groups that Gnus believes have 65,000 new messages or more. The biggest performance killer, since I don't use the agent, was the setting of `nnimap-prune-cache', default `t', which causes an enormous number of regexp searches in the cache. I set that to `nil' and found my performance radically improved for normal use, although there are still rare occasions that range operations cause delays. I intend working on the prune code at some point, and I am not sure it will be what is slowing y'all down, but it may be worth a try. Regards, Daniel