search for: vcpupin

...19" memory="62000000"/> <cell cpus="20-23" memory="62000000"/> <cell cpus="24-27" memory="62000000"/> <cell cpus="28-31" memory="62000000"/> </numa> </cpu> <cputune> <vcpupin vcpu="0" cpuset="0"/> <vcpupin vcpu="1" cpuset="1"/> <vcpupin vcpu="2" cpuset="2"/> <vcpupin vcpu="3" cpuset="3"/> <vcpupin vcpu="4" cpuset="4"/> <vcpupin vcpu...

...' /><cell cpus='16-19' memory='62000000' /><cell cpus='20-23' memory='62000000' /><cell cpus='24-27' memory='62000000' /><cell cpus='28-31' memory='62000000' /></numa></cpu> <cputune><vcpupin vcpu='0' cpuset='0' /><vcpupin vcpu='1' cpuset='1' /><vcpupin vcpu='2' cpuset='2' /><vcpupin vcpu='3' cpuset='3' /><vcpupin vcpu='4' cpuset='4' /><vcpupin vcpu='5' cpuset='5'...

...' /><cell cpus='16-19' memory='62000000' /><cell cpus='20-23' memory='62000000' /><cell cpus='24-27' memory='62000000' /><cell cpus='28-31' memory='62000000' /></numa></cpu> <cputune><vcpupin vcpu='0' cpuset='0' /><vcpupin vcpu='1' cpuset='2' /><vcpupin vcpu='2' cpuset='4' /><vcpupin vcpu='3' cpuset='6' /><vcpupin vcpu='4' cpuset='8' /><vcpupin vcpu='5' cpuset='10...

.../><cell cpus='16-19' memory='62000000' /><cell cpus='20-23' memory='62000000' /><cell cpus='24-27' memory='62000000' /><cell cpus='28-31' memory='62000000' /></numa></cpu> > <cputune><vcpupin vcpu='0' cpuset='0' /><vcpupin vcpu='1' cpuset='1' /><vcpupin vcpu='2' cpuset='2' /><vcpupin vcpu='3' cpuset='3' /><vcpupin vcpu='4' cpuset='4' /><vcpupin vcpu='5' cpuset='5'...

...' /><cell cpus='16-19' memory='62000000' /><cell cpus='20-23' memory='62000000' /><cell cpus='24-27' memory='62000000' /><cell cpus='28-31' memory='62000000' /></numa></cpu> <cputune><vcpupin vcpu='0' cpuset='0' /><vcpupin vcpu='1' cpuset='1' /><vcpupin vcpu='2' cpuset='2' /><vcpupin vcpu='3' cpuset='3' /><vcpupin vcpu='4' cpuset='4' /><vcpupin vcpu='5' cpuset='5'...

.../><cell cpus='16-19' memory='62000000' /><cell cpus='20-23' memory='62000000' /><cell cpus='24-27' memory='62000000' /><cell cpus='28-31' memory='62000000' /></numa></cpu> > <cputune><vcpupin vcpu='0' cpuset='0' /><vcpupin vcpu='1' cpuset='1' /><vcpupin vcpu='2' cpuset='2' /><vcpupin vcpu='3' cpuset='3' /><vcpupin vcpu='4' cpuset='4' /><vcpupin vcpu='5' cpuset='5'...

...e 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 vcpu="1" cpuset="4"/> </cputune> VM2: cputune> <shares>512</shares> <vcpupin vcpu="0" cpuset="1"/> <vcpupin vcpu="1" cpuset="5"/> <...

Hi all, I am trying to add vcpupin in the guest xml file. I am working with openstack and the code I have is python bound. I investigated through the code and found that the elemets in xml file are set in get_guest_config function. Now the thing is I am not able to set vcpupin element. I mean I tried guest.cputune_vcpupin but it'...

Hello, According to the docs, vcpupin will use either cgroups or sched_setaffinity to pin vcpu threads to cpus. How is this decision made? I observe differences even on different hosts featuring the same version of libvirtd (1.3.1): on one host vcpupin affects cpuset.cpus (cgroup), and on the other it affects vcpu threads affinity (obs...

...aed00-c610-b468-ad55-600a0b4e244c</uuid> <memory>2048000</memory> <currentMemory>2048000</currentMemory> <memoryBacking> <hugepages/> </memoryBacking> <vcpu cpuset='0,2,4,8,10,12,14'>8</vcpu> <cputune> <vcpupin vcpu='0' cpuset='0,8'/> <vcpupin vcpu='1' cpuset='2,10'/> <vcpupin vcpu='2' cpuset='4,12'/> <vcpupin vcpu='3' cpuset='6,14'/> <vcpupin vcpu='4' cpuset='0,8'/> <vcpupin v...

Hi all, I am trying to run some performance tests using libvirt 1.2.17. For these tests it is necessary to set a specific affinity for the VCPUs of a running VM. The problem is, that I noticed a significant performance drop in my metrics when using 'vcpupin' from the virsh console instead of running 'taskset' natively. Specifically the methods I am comparing are 1. Using native shell taskset -a -cp $MY_CPUSET $MY_DOMAIN_PID 2. Using virsh console (performance ~30% down) for all $VCPUs virsh vcpupin my_domain -cp...

Hi. Can anyone confirm if vcpupin works correctly with kvm? If set I pin a vcpu it shows up correctly via vcpuinfo, but querying via taskset shows the cpu is not pinned. Thanks, -Geoff -- ---- Geoff Galitz, ggalitz at shutterstock.com WebOps Engineer, Europe Shutterstock Images http://wwww.shutterstock.com/

On 07/19/2013 04:51 PM, Peeyush Gupta wrote: > Hi all, > > I am trying to add vcpupin in the guest xml file. I am working with > openstack and the code I have is python bound. I investigated through > the code and found that the elemets in xml file are set in > get_guest_config function. Now the thing is I am not able to set > vcpupin element. I mean I tried guest.cp...

Dear member of libvirt team, I hope the lxc could be dynamically reconfigured, such as the number of vcpu or vcpu pinning. According to http://libvirt.org/hvsupport.html , at present, setvcpus(virDomainSetVcpus) and vcpupin (virDomainGetVcpuPinInfo) are not supported by lxc driver. I wonder if these commands will be supported by libvirt in the future? Best wishes, Cheng Wang

On 12/03/2013 12:52 AM, Nicolas Sebrecht wrote: > This is about CPU affinity. You may look at CPU pinning with 'vcpupin' > in the manual of virsh. It is possible to enable vCPU pinning in libvirt > guest XML. > > Don't know if libvirt supports applying CPU affinity at guest runtime Yes, 'virsh vcpupin' can be used to change CPU affinity at runtime. > but you could do it with usual t...

...ibxl: introduce libxl_node_to_cpumap xl: allow for node-wise specification of vcpu pinning xl: implement and enable dryrun mode for `xl vcpu-pin' xl: test script for the cpumap parser (for vCPU pinning) docs/man/xl.cfg.pod.5 | 42 +++++-- tools/libxl/check-xl-vcpupin-parse | 229 ++++++++++++++++++++++++++++++++++++ tools/libxl/libxl_utils.c | 22 +++ tools/libxl/libxl_utils.h | 3 tools/libxl/xl_cmdimpl.c | 198 ++++++++++++++++++++++--------- tools/libxl/xl_cmdtable.c | 2 6 files changed, 432 insertions(+), 64...

Hi experts I want to use libvirt doing the migration migration the guest from core 0 to core 2, Is there a way to do this ? any points? Lei -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://listman.redhat.com/archives/libvirt-users/attachments/20131203/1cd982b2/attachment.htm>

Hi all, I am working with libvirt and I am trying to set cpu affinity. Now I can always use      virsh vcpupin <domain_name> <vcpu> <pcpu> to pin vcpus to pcpus. I want to do it using Python API. Now, there is function pinVcpu which is supposed to do that. But this is not working. For example I gave      dom.pinVcpu(0,1) but still my vcpu affinity is for all the pcpus. The function retu...

...<hugepages> > <page size='2048' unit='KiB' nodeset='0'/> > </hugepages> > </memoryBacking> > <vcpu placement='static'>2</vcpu> > <cputune> > <shares>4096</shares> > <vcpupin vcpu='0' cpuset='4-7'/> > <vcpupin vcpu='1' cpuset='4-7'/> > <emulatorpin cpuset='4-7'/> > </cputune> > <resource> > <partition>/machine</partition> > </resource> > <sysi...