X-Spam-Check-By: sourceware.org
From: "Dave Korn" <dave DOT korn AT artimi DOT com>
To: <cygwin AT cygwin DOT com>
Subject: RE: rsync over ssh hang issue understood
Date: Thu, 27 Apr 2006 13:18:10 +0100
Message-ID: <000601c669f4$a6857a60$a501a8c0@CAM.ARTIMI.COM>
MIME-Version: 1.0
Content-Type: text/plain; 	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook 11
In-Reply-To: <01cc01c66968$50acb950$b5db87d4@multiplay.co.uk>
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

On 26 April 2006 20:34, Steven Hartland wrote:

> Interestingly if I try to get a thread dump using
> sysinternals process explorer the rsync process goes
> mad using all available cpu.
> 


  That's a known issue, and one which I'd like to try and work on, but it's
really complex.  It's a side-effect of procexp doing an
RtlQueryProcessDebugInformation call on the cygwin process, which works
internally by injecting a remote thread into the cygwin process; this new
thread interacts badly with dll csrss in some way because it isn't
"lpc-registered".

  Unfortunately it doesn't seem possible to set a breakpoint on that function
in either windbg or gdb, so it looks very much like I'm gonna hafta break out
the full host'n'target kernel mode debugger to get anywhere with it.


    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


--
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/