From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerald Turner Subject: Re: Re: new netfront and occasional receive path lockup Date: Sun, 12 Sep 2010 19:12:30 -0700 Message-ID: <877hiqcrxt.fsf@headboard.unzane.com> References: <1282495384.12843.11.camel@leto.intern.saout.de> <4C73166D.3030000@goop.org> <20100909185058.GR2804@reaktio.net> <4C8981E5.6010000@goop.org> <87aannepx2.fsf@headboard.unzane.com> <4C8C9594.1010501@goop.org> <87k4mqd1re.fsf@headboard.unzane.com> <87bp82cxwn.fsf@headboard.unzane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: (Dongxiao Xu's message of "Mon, 13 Sep 2010 08:54:52 +0800") List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Xu, Dongxiao" Cc: Jeremy Fitzhardinge , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org "Xu, Dongxiao" writes: > Does this bug only happen when you launch multiple domUs? I tried a > single domU and could not catch the bug. > I've been working on this server for about two weeks, I hadn't noticed the problem for the first week when I only had 3 domUs. It started happening when I added 10 more domUs. The problem would happen quickly, within 10 minutes, always affecting at least two domUs at random, and affect more domUs over time. Saturday I installed the updated driver with Jeremy's use_smartpoll parameter, ran for 24 hours with smartpoll disabled, no problems. Today I've been trying with smartpoll enabled. It took an hour to affect two domUs - noticibly longer than the behavior previous days before installing your patch. I still have 9 other domUs running with smartpoll enabled, four hours uptime, I'm surprised they haven't been affected yet. Could there be another less-frequent race in smart_poll_function? -- Gerald Turner Email: gturner@unzane.com JID: gturner@jabber.unzane.com GPG: 0xFA8CD6D5 21D9 B2E8 7FE7 F19E 5F7D 4D0C 3FA0 810F FA8C D6D5