X-Recipient: archive-cygwin@delorie.com X-SWARE-Spam-Status: No, hits=-0.7 required=5.0 tests=AWL,BAYES_05,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,TW_YW,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: sourceware.org MIME-Version: 1.0 In-Reply-To: <4C86867D.4050509@cygwin.com> References: <4C86867D.4050509@cygwin.com> Date: Wed, 8 Sep 2010 08:35:52 -0500 Message-ID: Subject: Re: incredibly slow file listing script on windoze 7 pro 4 core 64 bit From: mike marchywka To: cygwin@cygwin.com Content-Type: text/plain; charset=ISO-8859-1 X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: 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 9/7/10, Larry Hall (Cygwin) wrote: > On 9/7/2010 12:05 PM, mike marchywka wrote: >> this takes a few minutes on old debian machine, taking much longer >> here on same data- >> about 19k file about 24Gb total size. >> Windoze finally has better perf stuff but still no help- one core at >> 25 pct all kernel >> time disk not exactly busy. All the time is in the "ls" loop not the >> find command. >> Now obbviously I expect the "ls" per file has to make a bunch of OS calls >> for >> each file but still even with cygwin layer seems a bit much. >> Thanks. > > The problem is that Cygwin has to open all the files to stat when you > use the '-l' flag. Try without the flag to get the lower bound and see if > that's better for you. If so, maybe '-s' will suit your purpose. Or > even 'du'? Sure, I could find a better way to do it but I was just curious about performance diffs. I've got this expensive 'doze laptop with 4 cores and the latest OS and all and compared to this old emachines desktop with debian it seems a bit slow. Now maybe this is a bit of a contrived case, no one would really do this and afterall the new system may be optimized for real-life usages and of course cygwin can't speed up obligatory OS calls. Anyway yes du seems much faster and is quite reasonable :) FWIW. Thanks. > > -- -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple