Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm 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 Date: Mon, 25 Apr 2005 15:49:00 -0400 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: scp/ssh between two cygwin installations very slow Message-ID: <20050425194900.GB14164@trixie.casa.cgf.cx> Reply-To: cygwin@cygwin.com References: <426D28E3.4080303@ege.cc> <426D48F4.5040908@ege.cc> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <426D48F4.5040908@ege.cc> User-Agent: Mutt/1.5.8i On Mon, Apr 25, 2005 at 09:45:56PM +0200, Bernhard Ege wrote: >Bernhard Ege wrote: >>I am trying to copy an 800MB file from my pc to my laptop. The pc has >>cygwin and cygwins sshd running and from the laptop I use the scp >>command to copy the file. >> >>Result: 190kB/s with low (1-5%) cpu usage on both machines. >> >>Expected result: at least 2-3MBps with somewhat higher cpuusage on both >>machines. > >Doh. I completely forgot that in my .ssh/config I had ssh call a script >using the ProxyCommand. That command is a shell script that detects >which network I am connected to (company or my own) and uses a tunneling >ssh command to the destination if on the company network or a direct >connection using "connect" if on my own network. > >The connect command is a fairly simple program that redirects >stdin/stdout to a host:port. This way, I can either use a ssh to >host:port if tunneling is required to connect to host:port if not. > >The problem is that cygwin has a very low throughput using the script >with the connect command. I guess it could be related to the slow pipe >problem mentioned earlier (but was supposedly fixed). > >I have tried without the ProxyCommand and the speed returned to an >acceptable 1.5MBps. > >I hope Cygwin can be fixed so the speed returns to normal :-) Yep. We'll get right on fixing that problem where fairly simple programs which redirect stdin/stdout to a host:port cause reversions in behavior of the "slow pipe" problem which was supposedly fixed. -- 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/