From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: still seeing network freezes with rtl8139 nic Date: Wed, 05 Mar 2008 19:14:35 +0200 Message-ID: <47CED4FB.8050508@qumranet.com> References: <47BDC414.30301@cisco.com> <47CEB685.10308@cisco.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net, Eckersid SIlapaswang To: david ahern Return-path: In-Reply-To: <47CEB685.10308@cisco.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org david ahern wrote: > Try adding the noapic option to your guest kernel. I re-ran that test on kvm-62 > and my VM was able to run under load for more than 3-1/2 days (the network never > locked up; I stopped the test to try other variations). > > One side effect of the noapic option is that irq balancing is disabled -- all > interrupts are delivered via CPU 0. I ran a few tests earlier this week without > the noapic option (hence with the apic) but with irq balancing disabled and > still had the lockups. It seems to be something specific to the apic. > > I got good results with apic and e1000. Can you try it? May be a guest driver bug. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/