From mboxrd@z Thu Jan 1 00:00:00 1970 From: Farkas Levente Subject: Re: [ANNOUNCE] kvm-46 release Date: Mon, 15 Oct 2007 16:22:49 +0200 Message-ID: <471377B9.70106@bppiac.hu> References: <470C8D28.2060408@qumranet.com> <470CB672.4070209@bppiac.hu> <470CB75E.4000404@qumranet.com> <470CB91A.1020508@bppiac.hu> <470CBE58.3040807@qumranet.com> <470CCA61.3080007@bppiac.hu> <47107150.3000106@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel To: Avi Kivity Return-path: In-Reply-To: <47107150.3000106-atKUWr5tajBWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Avi Kivity wrote: > Farkas Levente wrote: >> Avi Kivity wrote: >> >>> Farkas Levente wrote: >>> >>>>>> we did a quick test against this version and it's turn out the smp >>>>>> guests are still not working. even if we start only one linux guest >>>>>> with >>>>>> 4cpu on 4cpu host the guest kernel hangs at random stages of the kernel >>>>>> loading process (if we run more smp guests then they hang earlier, but >>>>>> different random stage), but it's never reach the end of the kernel so >>>>>> hang somewhere inside the kernel. and the cpu usage of these process >>>>>> goes up to until the qemu-kvm processes eat all cpus (ie. 100%). t >>>>>> >>>>>> >>>>> What host cpu are you using? What guest kernel version? 32-bit or >>>>> 64-bit? >>>>> >>>>> I have no problems running a 4-way Linux guest here. >>>>> >>>>> >>>> - host: >>>> - Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz >>>> - Intel S3000AHV >>>> - 8GB RAM >>>> - CentOS-5 >>>> - kernel-2.6.18-8.1.14.el5 x86_64 64bit >>>> - guest-1: >>>> - CentOS-5 >>>> - kernel-2.6.18-8.1.14.el5 i386 32bit >>>> - guest-2: >>>> - CentOS-5 >>>> - kernel-2.6.18-8.1.14.el5 x86_64 64bit >>>> - guest-3: >>>> - Mandrake-9 >>>> - kernel-2.4.19.16mdk-1-1mdk 32bit >>>> - guest-4: >>>> - Windows XP Professional 32bit >>>> >>>> start the first guest-1 with 4cpu produce the above hang. (and of course >>>> using kvm-46:-) >>>> >>>> >>>> >>> Is it the only guest that hangs with -smp 4? Or all of them? >>> >> if i start this guest alone it's hang. if i start all guest-{1,2,3,4} >> than all linux guest hangs expect windows which runs but see only one >> cpu. ok now i try it for you:-) so: >> >> - host + guest-1 -> hang >> >> - host + guest-2 -> hang >> in this case i've got a stack trace too on the host, and the host >> working 2 more minutes (!?) so i see the top part of the stack >> (shift-pageup) but when i try to take a picture the host crash and i can >> only see the end:-( but next time i bale to catch it: >> ----------------------------------------------- >> BUG: soft lockup detected on CPU#0! >> > > Yunfeng reports that this has been fixed, can you try the latest > snapshot from http://people.qumranet.com/avi/snapshots/? and the rpms in my repo, but i'd rather wait for kvm-47 since this's a production server and i'd like to play with it only once a week:-) -- Levente "Si vis pacem para bellum!" ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/