X-Spam-Check-By: sourceware.org Date: Wed, 17 Jan 2007 09:32:08 -0600 From: Brian Ford Reply-To: cygwin@cygwin.com To: cygwin@cygwin.com Subject: Re: Snapshot speed on managing files In-Reply-To: <45AD8B48.2090600@cygwin.com> Message-ID: References: <62410.52144.qm@web25001.mail.ukl.yahoo.com> <20070112102454.GA8311@calimero.vinschen.de> <20070113181859.GA5595@calimero.vinschen.de> <45AD8B48.2090600@cygwin.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 To clarify a few things... On Tue, 16 Jan 2007, Larry Hall (Cygwin) wrote: > Brian Ford wrote: > > A quick look via Filemon doesn't show where the time is going. But since > > I don't regularly run this way, I'm not that interested in pursuing this > > further. This statement was with respect to "Virus Scan Enterprise 8.0.0 On Access Scan Disabled" before Corinna's patch. I did not test after her patch because, as I said, I wasn't that interested in this (the OPs original) case. > > I regularly delete 100,000 files at a time under 1.5.18, and the rm return > > is rather snappy. About two weeks ago I was cleaning space of my drive > > under a then current CVS build with On Access Scan enabled (before my 64k > > I/O change, although I don't think that's relevant), and deleting a few > > thousand files was very slow comparatively. So, I presumed I had seen the > > problem. > > > > Since I can't duplicate this observation now, I'm sorry for the wasted > > effort. > > Did you update your build recently? This observation was before her patch, and my attempt to reproduce it was also pre-patch. So, no. > Corinna checked in a fix for this on Saturday > . My point was that her statements about her patch bringing only a marginal performance increase, and the original code not being horribly inefficient, appear correct despite my previous qualitative observation. -- Brian Ford Lead Realtime Software Engineer VITAL - Visual Simulation Systems FlightSafety International the best safety device in any aircraft is a well-trained crew... -- 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/