similar to: disk io in guests causes soft lockups in guests and host processes

Hi all, I'm running a VM using libvirt+KVM and I have a disk performance issue. The host is the following: 4 cores Intel Xeon 5140@2.33 GHz, 16 GB of RAM, SATA HDD, OS Debian Wheezy, libvirt 0.9.12-11, QEMU-KVM 1.1.2+dfsg-2. The guest: 1 CPU, 2 GB RAM running Debian 7.0, image in compressed qcow2 format. When I try do run "dd if=/dev/zero of=io.test bs=32768k count=40" I get

I had a post since 1 week and i want to know why i cant play to Dragon Age2 I'am with Playonlinux 1.3.15, the game i purchast it to Wallmart. When i see the game on Playonlinux i go for search it, i installed it i cant play because Playonlinux tell me to bypass the anti-hacking. I said WHAT'S THAT?. It's the first time i see it for a l?gal game, can you help me please or explain this

with kvm and virtio- would -m 1024 take proceedence over -balloon virtio? when i use both together, i see memory stay around 1024 MB less on my host side. I know the guest is not taking but a fraction of that ram, so I would expect the virtio balloon to take the majority of the guests ram and hand it back to the host. this is using the free util/command to take snapshots of the host memory.?

Dear R Users, I have a data frame of 360 rows by 720 columns (259200 values). For each value in this grid I am hoping to apply an equation to, to generate a new grid. One of the parts of the equation (called 'p') relies on reading from a separate reference table. This is Table 4 at: http://www.fao.org/docrep/s2022e/s2022e07.htm#3.1.3%20blaney%20criddle%20method (scroll down a little).

Hi, Any folks on this list who have installed CentOS 6.3 on the new Dell Poweredge R815 servers? How was your experience? Thanks -Surya -- Surya Saha Department of Plant Pathology and Plant-Microbe Biology Cornell University, NY, USA http://www.linkedin.com/in/suryasaha

v2: - fix compile issues if no CONFIG_SMP, Konrad Rzeszutek Wilk - move inc_irq_stat after irq_work_run These 2 patches fixed the "perf top" soft lockups under Xen reported by Steven at: https://lkml.org/lkml/2012/2/9/506 Both Steven and I tested it and "perf top" works well now. The soft lockup code path is: __irq_work_queue arch_irq_work_raise

(Forgot mail subject, add it) On Sun, Apr 15, 2012 at 2:09 PM, Lin Ming <mlin@ss.pku.edu.cn> wrote: > Hi all, > > These 2 patches try to fix the "perf top" soft lockups under Xen > reported by Steven at: https://lkml.org/lkml/2012/2/9/506 > > I tested it with 3.4-rc2 and "perf top" works well now. > > Steven, > Could you please help to test it

On 03/09/2016 08:15 PM, Sarah Newman wrote: > I've been running 3.18.25-18.el6.x86_64 + our build of xen 4.4.3-9 on one host for the last couple of weeks and have gotten several soft lockups > within the last 24 hours. I am posting here first in case anyone else has experienced the same issue. > Here is mpstat from around the time of the issue: 0:08:56 PM CPU %usr %nice

Hi all, Annoying issue.. my ThinkPad T61 has an iwl4965 wireless card. When I have the wireless switch on, I experience a lot of issues.. system keeps freezing..unfreezing..freezing..etc. Sometimes, a soft lockup is logged to /var/log/messages. psmouse.c also sometimes throws an error saying the mouse lost synchronization. Obviously, this is causing the system to freeze for a sec and

https://bugs.freedesktop.org/show_bug.cgi?id=99385 Bug ID: 99385 Summary: Nouveau produces soft lockups Product: xorg Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Driver/nouveau Assignee: nouveau at lists.freedesktop.org

reassign 758622 linux-image-3.16.0-4-amd64 thanks Hi Ben, thanks for your response. Am 2014-11-05 21:40, schrieb Ben Hutchings: > On Wed, 2014-11-05 at 17:56 +0100, Jonas Meurer wrote: > [...] >> So the question is: why does the VM run stable on xen1 while it >> crashes all the time on xen2. If I compare xen1 and xen2, only >> real difference is mainboard (Supermicro X8

On 03/10/2016 12:05 AM, Sarah Newman wrote: > On 03/09/2016 08:15 PM, Sarah Newman wrote: >> I've been running 3.18.25-18.el6.x86_64 + our build of xen 4.4.3-9 on one host for the last couple of weeks and have gotten several soft lockups >> within the last 24 hours. I am posting here first in case anyone else has experienced the same issue. >> > > Here is mpstat

Hello, I run CentOS 5.6 on a Dell PowerEdge R815 with 256 GB of RAM. We use Sun Grid Engine to schedule jobs on this node. I want to limit the memory usage about 150 GB per process. So i use the /etc/security/limits.conf configuration file. I test this configuration with some tools with a lower GB limit (about 2 or 4 GB), and it works ! But, at least one process (oases - a bioinformatics

On Wed, 2014-11-05 at 17:56 +0100, Jonas Meurer wrote: [...] > So the question is: why does the VM run stable on xen1 while it > crashes all the time on xen2. If I compare xen1 and xen2, only > real difference is mainboard (Supermicro X8 on xen1; Supermicro > X9 on xen2) and CPU (Xeon L5939 on xen1; E5-2609 on xen2) > > As a next step I'll put the harddisks into another

hi guys I wonder if any of you might be using SFN6122F-R7 SFP+ (SFC9000, same firmware everywhere, Centos 7.5 too. I'm trying poor man's setup to get the servers onto 10GbE network. Setup is such that three Dell R815 are connected to each other, each has one Solarflare(SFP ports) and each Solarflare is set as net-team(both ports on a card are net-team device) with runner in broadcast

Hello, I am running several virtualization servers with QEMU 1.4.x and libvirt 1.0.2 on Ubuntu 12.04 and am working on optimizing the cache= and aio= options for the virtual machines. These VM images are mostly qcow2, and are served both from a local ext4 filesystem (with data=ordered,barrier) and from an NFS mountpoint (with sync). The local filesystem sits on top of an md software RAID of SATA

I've been running 3.18.25-18.el6.x86_64 + our build of xen 4.4.3-9 on one host for the last couple of weeks and have gotten several soft lockups within the last 24 hours. I am posting here first in case anyone else has experienced the same issue. Here is the first instance: sched: RT throttling activated NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:0] Modules linked in:

On Tue, Sep 06, 2016 at 11:53:04PM +0200, Daniel Vogelbacher via samba wrote: > > Delete all the crap above first :-). > > > > Then start trying to copy locally to the tmpfs share to see what > > the max local copy speed it. > > > > Now I have: > > server multi channel support = yes > vfs objects = aio_pthread,recycle > aio read size = 1 > aio

https://bugs.freedesktop.org/show_bug.cgi?id=100035 Bug ID: 100035 Summary: nouveau runtime pm causes soft lockups and hangs during boot Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium

Trying to migrate a 64bit PV guest with 64GB running medium to heavy load on xen 3.4.0, it is showing lot of soft lockups. The softlockups are causing dom0 reboot by the cluster FS. The hardware has 256GB and 32 CPUs. Looking into the hypervisor thru kdb, I see one cpu in sh_resync_all() while all other 31 appear spinning on the shadow_lock. I vaguely remember seeing some thread on this while