X-Spam-Check-By: sourceware.org Date: Fri, 26 May 2006 12:23:54 -0400 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: slow share = slow scripts? Message-ID: <20060526162354.GA7151@trixie.casa.cgf.cx> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <001c01c6806d$a1249e40$020aa8c0@DFW5RB41> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 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 On Fri, May 26, 2006 at 10:37:52AM -0500, mwoehlke wrote: >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 "necessary" design flaw? Interesting concept. >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. I think that most of the pointers and insight about what Cygwin does with fstat are all nicely encapsulated in the source code, specifically fhandler_disk_file.cc and fhandler.cc . cgf -- 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/