From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Chong Yidong Newsgroups: gmane.emacs.devel Subject: Re: files.el: Once again impossible to turn off dir-settings Date: Tue, 25 Nov 2008 17:42:19 -0500 Message-ID: <87d4gj8m2c.fsf@cyd.mit.edu> References: <5f0ff9220811250613yfc12747x288be0767f63c6b6@mail.gmail.com> <5f0ff9220811251100m2372217ao9943f6f5998a9b2b@mail.gmail.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1227652940 31096 80.91.229.12 (25 Nov 2008 22:42:20 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 25 Nov 2008 22:42:20 +0000 (UTC) Cc: "T.V. Raman" , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Nov 25 23:43:23 2008 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1L56co-000693-9e for ged-emacs-devel@m.gmane.org; Tue, 25 Nov 2008 23:43:18 +0100 Original-Received: from localhost ([127.0.0.1]:57916 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1L56be-0006ZM-U5 for ged-emacs-devel@m.gmane.org; Tue, 25 Nov 2008 17:42:06 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1L56bZ-0006Z8-Ey for emacs-devel@gnu.org; Tue, 25 Nov 2008 17:42:01 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1L56bY-0006Yf-28 for emacs-devel@gnu.org; Tue, 25 Nov 2008 17:42:01 -0500 Original-Received: from [199.232.76.173] (port=55961 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1L56bX-0006Yc-SD for emacs-devel@gnu.org; Tue, 25 Nov 2008 17:41:59 -0500 Original-Received: from cyd.mit.edu ([18.115.2.24]:51018) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1L56bX-0008Bp-P9 for emacs-devel@gnu.org; Tue, 25 Nov 2008 17:41:59 -0500 Original-Received: by cyd.mit.edu (Postfix, from userid 1000) id 695C157E04D; Tue, 25 Nov 2008 17:42:19 -0500 (EST) In-Reply-To: (Stefan Monnier's message of "Tue, 25 Nov 2008 16:48:53 -0500") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) X-detected-operating-system: by monty-python.gnu.org: Genre and OS details not recognized. X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:106173 Archived-At: Stefan Monnier writes: >> (setq vc-ignore-dir-regexp >> "\\`\\([\\/][\\/]\\|/net/\\|/home/\\|/afs/\\)\\'") >> Notice the addition of /home above -- in my case /home is nfs >> mounted. > > NFS mounting as such is normally not a problem. So could you explain > exactly how is /home mounted? Is it an autofs mount? Do accesses to > /home/foobar automatically trigger access to some network server (even > if /home/foobar doesn't actually exist)? I don't know if this is what T. V. Raman is using, but I have experience of a setup where moving up the directory hierachy eventually leads to extreme slowness. When (say) your home directory is mounted on AFS (a distributeed network file system), moving up the AFS file hierachy eventually brings you to the /afs root directory. This directory is populated by literally thousands of files, each of which on a different server (each is a different AFS cell). Doing something like `ls' in this directory can take minutes. (I don't use this setup anymore, though; this was on a campus network where AFS was widely used.)