delorie.com/archives/browse.cgi | search |
X-Spam-Check-By: | sourceware.org |
Message-ID: | <46463434.2060909@byu.net> |
Date: | Sat, 12 May 2007 15:40:04 -0600 |
From: | Eric Blake <ebb9 AT byu DOT net> |
User-Agent: | Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.10) Gecko/20070221 Thunderbird/1.5.0.10 Mnenhy/0.7.5.666 |
MIME-Version: | 1.0 |
To: | cygwin AT cygwin DOT com |
Subject: | Re: Speed of Cygwin's cp vs. Windows Explorer |
References: | <942b10df0705120623r391f6bdeg7aaf5643901a03b0 AT mail DOT gmail DOT com> |
In-Reply-To: | <942b10df0705120623r391f6bdeg7aaf5643901a03b0@mail.gmail.com> |
X-IsSubscribed: | yes |
Mailing-List: | contact cygwin-help AT cygwin DOT com; run by ezmlm |
List-Id: | <cygwin.cygwin.com> |
List-Subscribe: | <mailto:cygwin-subscribe AT cygwin DOT com> |
List-Archive: | <http://sourceware.org/ml/cygwin/> |
List-Post: | <mailto:cygwin AT cygwin DOT com> |
List-Help: | <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs> |
Sender: | cygwin-owner AT cygwin DOT com |
Mail-Followup-To: | cygwin AT cygwin DOT com |
Delivered-To: | mailing list cygwin AT cygwin DOT com |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Bob Heckel on 5/12/2007 7:23 AM: > Why would using Cygwin's cp to copy a large file from one Windows XP > box to another take 30 minutes but take only 10 minutes if I use drag > 'n' drop (via Explorer)? It has been mentioned in the past, and one of the ideas was adding support for posix_fadvise (added in the snapshots, but not in 1.5.x) and making coreutils take advantage of it to give Windows better hints about how the data being manipulated will be laid out. I have not yet had time to play with this idea further, and the upstream coreutils maintainers are reluctant to rely on posix_fadvise just yet (since Linux currently has a bug where stating a file is read-once flushes it from the os cache for ALL processes, rather than just the process that is only going to read it once, which makes the read-once hint rather useless). > I'm in a position of defending the use of Cygwin instead of the manual > Windows way of doing things by those not familiar with Unix. Any > hints would be appreciated. At least cygwin cp preserves permissions correctly. Windows drag-n-drop has the annoying tendency of marking everything executable. - -- Don't work too hard, make some time for fun as well! Eric Blake ebb9 AT byu DOT net volunteer cygwin coreutils maintainer -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGRjQz84KuGfSFAYARAvrgAKC2A3Fi2lLlDURfBBZJa9/7nWjxrACgtX2s G9aPQY3+Z3RMAbBjdUorr6A= =lNyk -----END PGP SIGNATURE----- -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
webmaster | delorie software privacy |
Copyright © 2019 by DJ Delorie | Updated Jul 2019 |