From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Ericsson Subject: Re: NT directory traversal speed on 25K files on Cygwin Date: Mon, 27 Feb 2006 10:19:09 +0100 Message-ID: <4402C40D.2010805@op5.se> References: <81b0412b0602230000t58a88af6na1aa7e323dc0179d@mail.gmail.com> <7vwtfmihts.fsf@assigned-by-dhcp.cox.net> <81b0412b0602230135w472aa6f3v72980f6f63bb355f@mail.gmail.com> <81b0412b0602230141g46dbfaev6baa5083dee2d42@mail.gmail.com> <43FD84EB.3040704@op5.se> <81b0412b0602230210r3ffe6e2dta5dc86d6516692b9@mail.gmail.com> <43FDB8CC.5000503@op5.se> <81b0412b0602230607n22146a77k36929f0ad9e44d53@mail.gmail.com> <20060226195552.GA30735@trixie.casa.cgf.cx> <20060226231701.GA11961@nospam.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Cc: Christopher Faylor , git@vger.kernel.org X-From: git-owner@vger.kernel.org Mon Feb 27 10:19:35 2006 Return-path: Envelope-to: gcvg-git@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by ciao.gmane.org with esmtp (Exim 4.43) id 1FDeXI-00046f-6l for gcvg-git@gmane.org; Mon, 27 Feb 2006 10:19:20 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751718AbWB0JTO (ORCPT ); Mon, 27 Feb 2006 04:19:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751720AbWB0JTN (ORCPT ); Mon, 27 Feb 2006 04:19:13 -0500 Received: from linux-server1.op5.se ([193.201.96.2]:44458 "EHLO smtp-gw1.op5.se") by vger.kernel.org with ESMTP id S1751710AbWB0JTM (ORCPT ); Mon, 27 Feb 2006 04:19:12 -0500 Received: from [192.168.1.20] (host-213.88.215.14.addr.se.sn.net [213.88.215.14]) by smtp-gw1.op5.se (Postfix) with ESMTP id 19A906BD22; Mon, 27 Feb 2006 10:19:10 +0100 (CET) User-Agent: Mozilla Thunderbird 1.0.7-1.1.fc4 (X11/20050929) X-Accept-Language: en-us, en To: git@wingding.demon.nl In-Reply-To: <20060226231701.GA11961@nospam.com> Sender: git-owner@vger.kernel.org Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: Rutger Nijlunsing wrote: > On Sun, Feb 26, 2006 at 02:55:52PM -0500, Christopher Faylor wrote: > >>On Thu, Feb 23, 2006 at 03:07:07PM +0100, Alex Riesen wrote: >> >>>filesystem is slow and locked down, and exec-attribute is NOT really >>>useful even on NTFS (it is somehow related to execute permission and >>>open files. I still cannot figure out how exactly are they related). >> >>Again, it's not clear if you're talking about Windows or Cygwin but >>under Cygwin, in the default configuration, the exec attribute means the >>same thing to cygwin as it does to linux. > > > I don't know about native Windows speed, but comparing NutCracker with > Cygwin on a simple 'find . | wc -l' already gives a clue that looking > at Cygwin to benchmark NT file inspection IO will give a skewed > picture: > Well, naturally. Cygwin is a userland implementation of a sane filesystem on top of a less sane one. File IO is bound to be slower when one FS is emulated on top of another. I think cygwin users are aware of this and simply accept the speed-for-sanity tradeoff. I know I would. -- Andreas Ericsson andreas.ericsson@op5.se OP5 AB www.op5.se Tel: +46 8-230225 Fax: +46 8-230231