X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=BAYES_00 X-Spam-Check-By: sourceware.org MIME-Version: 1.0 In-Reply-To: References: <4EE98816 DOT 3020305 AT gmail DOT com> Date: Tue, 20 Dec 2011 14:40:03 +0000 Message-ID: Subject: Re: Issues with TCP Window Scaling Factor and Cygwin Daemons From: David Groves To: cygwin AT cygwin DOT com Content-Type: text/plain; charset=ISO-8859-1 X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com It looks like the hotfix (http://support.microsoft.com/kb/983528) DaveK suggested is working. It has fully resolved the issue with my Windows 7 machine + our lab Win2K8 box (although we couldn't see the symptoms of the small window size as the latency is so low, we could still see 0 WSF in tcpdump output). We are waiting for a planned outage window to try it on one of our production systems, but we are quite hopeful this should fix the issue. -- 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