From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:34866) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UIlgk-0007XA-4V for qemu-devel@nongnu.org; Thu, 21 Mar 2013 16:02:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UIlgb-0002OS-Jf for qemu-devel@nongnu.org; Thu, 21 Mar 2013 16:02:14 -0400 Received: from g4t0014.houston.hp.com ([15.201.24.17]:44789) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UIlgb-0002Ne-Eh for qemu-devel@nongnu.org; Thu, 21 Mar 2013 16:02:05 -0400 Received: from g4t0018.houston.hp.com (g4t0018.houston.hp.com [16.234.32.27]) by g4t0014.houston.hp.com (Postfix) with ESMTP id E185D245A4 for ; Thu, 21 Mar 2013 20:01:58 +0000 (UTC) Received: from [16.108.159.19] (cvinod1.americas.hpqcorp.net [16.108.159.19]) by g4t0018.houston.hp.com (Postfix) with ESMTP id B6BF81039B for ; Thu, 21 Mar 2013 20:01:58 +0000 (UTC) Message-ID: <514B6736.8030606@hp.com> Date: Thu, 21 Mar 2013 13:01:58 -0700 From: Chegu Vinod MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Large guest boot hangs the host. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel qemu-devel Hello, I have been noticing host hangs when trying to boot large guests (>=40Vcpus) with the current upstream qemu. Host is running 3.8.2 kernel. qemu is the latest one from qemu.git. Example qemu command line listed below... this used to work with a slightly older qemu (about 1.5 weeks ago and on the same host with the 3.8.2 kernel) 'am trying to determine the cause of the host hang...but wanted to check to see if anyone else has seen it... Thanks Vinod ---- /usr/local/bin/qemu-system-x86_64 \ -enable-kvm \ -cpu host \ -smp sockets=8,cores=10,threads=1 \ -numa node,nodeid=0,cpus=0-9,mem=64g \ -numa node,nodeid=1,cpus=10-19,mem=64g \ -numa node,nodeid=2,cpus=20-29,mem=64g \ -numa node,nodeid=3,cpus=30-39,mem=64g \ -numa node,nodeid=4,cpus=40-49,mem=64g \ -numa node,nodeid=5,cpus=50-59,mem=64g \ -numa node,nodeid=6,cpus=60-69,mem=64g \ -numa node,nodeid=7,cpus=70-79,mem=64g \ -m 524288 \ -mem-path /dev/hugepages \ -name vm1 \ -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/vm1.monitor,server,nowait \ -drive file=/dev/libvirt_lvm/vm1,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=native \ -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \ -monitor stdio \ -net nic,model=virtio,macaddr=52:54:00:71:01:01,netdev=nic-0 \ -netdev tap,id=nic-0,ifname=tap0,script=no,downscript=no,vhost=on \ -vnc :4