similar to: How to set cpu limits to xen domU in libvirt

hello, i am new to lxc, i have created a lxc container on fedora 19 i created a container rootfs of fedora 19 by using yum --installroot=/containers/test1 --releasever=19 install openssh test1.xml file for container test1 <domain type="lxc"> <name>test1</name> <vcpu placement="static">1</vcpu> <cputune>

hi all, I am using lxc with libvirt. But I can't boot lxc container by libvirt 1.0.3(libvirt 0.9.8 works) . Below is my environment. Do I miss something? lxc1.xml:<domain type='lxc'> <name>lxc1</name> <memory>1024000</memory> <cputune> <shares>100</shares> </cputune> <os> <type>exe</type>

Hi folks! i created a server with this XML file: <domain type='lxc'> <name>lxctest1</name> <uuid>227bd347-dd1d-4bfd-81e1-01052e91ffe2</uuid> <metadata> <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0"> <libosinfo:os id="http://centos.org/centos/6.9"/>

Hi , I was previously using xen and currently moved to KVM. I am using libvirt to manage these VMs. In den's credit scheduler , I had the ability to set a cap on the cpu usage for a VM. But I was not able to find a similar substitute in KVM. I find that we can use cgroups to provide shares for VM but that will be more like weight based and it doesn't set a hard cap for that VM. I tried

As scheduled, libvirt 0.9.0 was tagged and pushed today, it's available from FTP at: ftp://libvirt.org/libvirt/ This is a large release w.r.t. the amount of features and changes, and well worth bumping the middle version number. We are also getting closer to a 1.0.0 release ! Features: - Support cputune cpu usage tuning (Osier Yang and Nikunj A. Dadhania) - Add public APIs for storage

Hello libvirt users, I'm using the cgroup with QEMU guests. At /etc/libvirt/qemu.conf, I have the following parameter: cgroup_controllers = [ "cpu" ] This controller is successfully mounted and libvirt is able to create subgroups for each VM, it's really great the cgroups support in libvirt. The problem is that I can only set the parameters of a given cgroup under the cpu

Hi, How do Hard limit a CPU allowance to 25% of a single core in KVM? Regards, Shashwat Shagun

Hi there, I have a question regarding the shares option of the cputune section. I want to illustrate my question with the following example. Let's assume I have two virtual machines like the following on four dedicated core with two threads each: VM1: <cputune> <shares>512</shares> <vcpupin vcpu="0" cpuset="0"/> <vcpupin

Dear Xen Community, today we tried to upgrade our base server from a Xeon E5430 to a Xeon X5570 (Nehalem). This worked fine so far, but our DomUs with Kernel 2.6.27 no longer boot - they start up until the following message appears: [..] Mount-cache hash table entries: 256 Initializing cgroup subsys ns Initializing cgroup subsys cpuacct Initializing cgroup subsys memory Initializing cgroup

Hello Based on the lxc driver documentation, I am trying to create an xml to share an existing network namespace with another container. I am running libvirt 1.2.15. Here is the xml: <domain type='lxc' xmlns:lxc='http://libvirt.org/schemas/domain/lxc/1.0'> <name>nt</name> <uuid>43c00192-e114-4e29-8ce7-4b5487f60a75</uuid> <memory

Hello, I want to monitor the outgoing and incoming monthly internet usage. How can I do that? -- Tony

Hello, I have a vm with startup xml file has currentmemory = 256M and memory=1024M. However, once the vm started up, the memory allocation won't change. xentop shows that the memory keeps in 256M. How can I make the vm to allocate more memory when they needed. -- Tony

On 09/14/2018 03:36 PM, Lukas Hejtmanek wrote: > Hello, > > ok, I found that cpu pinning was wrong, so I corrected it to be 1:1. The issue > with iozone remains the same. > > The spec is running, however, it runs slower than 1-NUMA case. > > The corrected XML looks like follows: [Reformated XML for better reading] <cpu mode="host-passthrough">

Hello again, when the iozone writes slow. This is how slabtop looks like: 62476752 62476728 0% 0.10K 1601968 39 6407872K buffer_head 1000678 999168 0% 0.56K 142954 7 571816K radix_tree_node 132184 125911 0% 0.03K 1066 124 4264K kmalloc-32 118496 118224 0% 0.12K 3703 32 14812K kmalloc-node 73206 56467 0% 0.19K 3486 21

I'm running libvirt 0.10.2 and qemu-kvm-1.2.0, both compiled from source, on CentOS 6. I've got a working blkio cgroup hierarchy which I'm attaching guests to using the following XML guest configs: VM1 (foreground): <cputune> <shares>2048</shares> </cputune> <blkiotune> <weight>1000</weight> </blkiotune>

Hello, I have cluster with AMD EPYC 7351 cpu. Two CPUs per node. I have performance 8-NUMA configuration: This is from hypervizor: [root@hde10 ~]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 64 On-line CPU(s) list: 0-63 Thread(s) per core: 2 Core(s) per socket: 16 Socket(s): 2 NUMA

Hi For a school project I am researching performance issues when using libvirt to run very large numbers of virtual machines. My experiments indicate that having more CPU cores negatively impacts the performance. A simple desktop with an Intel Core 2 Duo E6550 performs better than a server with a 48 core AMD CPU. Limiting the cores used through 'cputune' improves performance on the

2015-11-30 14:17 GMT+03:00 John Ferlan <jferlan@redhat.com>: > Such as? > > http://libvirt.org/formatdomain.html#elementsIOThreadsAllocation > > and usage within <cputune> as <iothreadpin> or <iothreadsched> So you mean that if i define iothread in domain xml and create virtio-scsi it automatic enables virtio-scsi-data-plane? -- Vasiliy Tolstov, e-mail:

On 02/11/2014 04:45 PM, Cole Robinson wrote: > On 02/10/2014 06:46 PM, Chris Friesen wrote: >> Hi, >> >> We've run into a problem with libvirt 1.1.2 and are looking for some comments >> on whether this is a bug or design intent. >> >> We're trying to use migrateToURI() but we're using a few things (numatune, >> vcpu mask, etc.) that may need

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