From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 112416 invoked by alias); 23 Oct 2015 14:02:01 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 112356 invoked by uid 89); 23 Oct 2015 14:01:59 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-4.4 required=5.0 tests=AWL,BAYES_50,FSL_HELO_BARE_IP_2,RCVD_IN_DNSWL_LOW,RCVD_NUMERIC_HELO,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=no version=3.3.2 X-HELO: plane.gmane.org Received: from plane.gmane.org (HELO plane.gmane.org) (80.91.229.3) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-SHA encrypted) ESMTPS; Fri, 23 Oct 2015 14:01:57 +0000 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1ZpcuX-0000HZ-Ls for cygwin@cygwin.com; Fri, 23 Oct 2015 16:01:37 +0200 Received: from 217.10.52.10 ([217.10.52.10]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 23 Oct 2015 16:01:37 +0200 Received: from Stromeko by 217.10.52.10 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 23 Oct 2015 16:01:37 +0200 To: cygwin@cygwin.com From: Achim Gratz Subject: Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.3.0-0.4 Date: Fri, 23 Oct 2015 14:52:00 -0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit User-Agent: Loom/3.14 (http://gmane.org/) X-IsSubscribed: yes X-SW-Source: 2015-10/txt/msg00406.txt.bz2 Corinna Vinschen cygwin.com> writes: > There's, as usual, a downside: AuthZ leans a bit to the slow side. It's not too bad, as long as your network connection is fast (and fast means short roundtrip time for an AD query). If I take each page fault as reported by time as a proxy for an AD access, then it needs about three times more roundtrips to the AD. On a server with almost perfect connectivity to the AD that increases the wall-time of listing a very large directory with directories/files from many users (about a quarter of all users in the AD, and not all from the local domain) from 8 to 10 minutes. The CPU time as well as the network traffic is neglible in both cases. On my local laptop things look a bit different, a small ~5% subset of the test above goes from 20s to 200s and a different larger ~10% subset from 50s to 500s. While that hurts, the more usual case with many files from the same user doesn't feel any slower at the moment. The access through VPN will be interesting, though... Regards, Achim. -- 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