From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nivedita Singhvi Subject: Re: Problem with apache proxying between domains Date: Mon, 14 Feb 2005 16:41:01 -0800 Message-ID: <4211451D.1000808@us.ibm.com> References: <421114E4.5030003@cloakmail.com> <421128B0.7060407@us.ibm.com> <42113431.6010901@cloakmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit In-Reply-To: <42113431.6010901@cloakmail.com> Sender: xen-devel-admin@lists.sourceforge.net Errors-To: xen-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Andrew Athan Cc: xen-devel@lists.sourceforge.net List-Id: xen-devel@lists.xenproject.org Andrew Athan wrote: > What's the equivalent of strace on Windows XP? Ah, right, you did say 240 was a windows box. I don't know that your browser read any data at all. It starts off with a 64K window - and if you notice in the log, it just ramps down till it goes to zero. Doesn't look like any data got pushed to the application. 205 (dom0) sure pushed a bunch of data out, so not sure that the problem is between dom0 <-> dom1. At least, no evidence yet of that. If it's not too much trouble, could you also grab a trace of a successful transfer? > I can strace the two apache processes on the Linux hosts, but not sure I > can get useful information about the quicktime plugin in the browser. Might help to collect stats off dom1, though. > By the way, dom1 is using swap which is an LVM volume in dom0. Could > there be some kind of deadlock in which dom0's apache is blocking on a > network read which dom1 cannot service because it needs swap, which dom0 > cannot supply via LVM because the dom0 inter-domain stuff is "stuck" > trying to service the apache inter-domain network request ?? See above - your trace is showing the exchange between dom0 and the browser box, correct? It has a problem on the receiver end (windows browser not reading) - double check that.. > I needed to make progress, so I have punted on inter-domain apache > proxying for now. However, I can set up a test config easily enough if > that is of interest to the group. The missing packets are somewhat > worrisome to me, since I would have thought that inter-domain > communication was lossless. Could be ethereal that's missing the packets, not necessarily the interfaces that dropped them, stats would tell.. thanks, Nivedita ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click