X-Spam-Check-By: sourceware.org To: cygwin@cygwin.com From: mwoehlke Subject: Re: slow share = slow scripts? Date: Fri, 26 May 2006 10:37:52 -0500 Lines: 35 Message-ID: References: <001c01c6806d$a1249e40$020aa8c0@DFW5RB41> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Thunderbird 1.5.0.2 (X11/20060420) In-Reply-To: <001c01c6806d$a1249e40$020aa8c0@DFW5RB41> X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Gary R. Van Sickle wrote: >> From: mwoehlke > [snip] >> Also, why *is* >> fstat() so inefficient? > > Short answer: because it gets a bunch of information about the file that > isn't necessarily available without hitting (open()ing) the file itself. Like... what? Inode information? Looking at the man page for 'stat' (on Linux, anyway; apparently I don't have the libc man pages installed on Cygwin), I don't see anything that I would expect to need to *open* the file to retrieve. Way way back in the OP, I mentioned that Interix doesn't have this problem, which would imply a "design flaw" in Cygwin. Maybe (probably) it is a *necessary* design flaw, BUT... A while back I was thinking about tying Cygwin into the Interix subsystem for the sake of certain file-system calls... and things like fstat in particular. If the problem is that Cygwin's fstat implementation requires opening the file and Interix's does not, this just became a *very* compelling (for me, at least) argument to taking on that project. Please note that I'm not asking anyone to do this... given the response I got last time, I don't have any illusions that this will happen short of my doing it myself (at which point I will be derided, and my work will never leave my office). However, I would appreciate any existing knowledge, or even pointers to where to start poking around, that anyone would care to share. -- Matthew Feed the hippo. Love the hippo. Run from the hippo. -- 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/