similar to: Squeeze / Xen 4.01 : xm vcpu-set

Hi, I don''t want to hijack this thread. But as I lately posted a question which mainly was about weight and cap and this fits in perfectly (and also you seem to be an expert here), I repeat it below. In the meantime I saw an academic article Ludmilla Cherkasova et al. from which I understood that you have to careful that a Dom0 doesn''t get too much weight, as otherwise

Hi, I have set maxvcpus and vcpus options in my domU configuration file, and I can see that X number of vcpu are set for the domU. I tried to activate all the vpcus by using vpcu_avail option (using decimal to represent vpcu bitmask e.g. 24=11000) but it doesn''t seem to work, and only the first vpcu is activated (i.e. has -b- state) while all other vpcu''s set for the domU are

Hi, I have set maxvcpus and vcpus options in my domU configuration file, and I can see that X number of vcpu are set for the domU. I tried to activate all the vpcus by using vpcu_avail option (using decimal to represent vpcu bitmask e.g. 24=11000) but it doesn''t seem to work, and only the first vpcu is activated (i.e. has -b- state) while all other vpcu''s set for the domU are

Hello all ;) Tell I have a Xeon server with 4 vcpus If on this box I have some guets, tell 10, what is the best solutions : - Set all guests to 1 vcpu ? - Set all guests to 4 vcpus ? I well understand that if I set a guest with 4 vcpus and all others only with one vpcus, then the one with 4 vcpus will have more "cpu time" available than others guests. But in case I''d like

Hi, The xm vcpu-set command is able to set zero to the number of VCPU of a domain. Therefore I think that it is a natural result that the xm start command fails. But I think that a xm vcpu-set command must fail usually. # xm list Name ID Mem VCPUs State Time(s) Domain-0 0 942 2 r----- 75.2 vm1

Hello, after installing many guest systems I realised that three of them need more than one core. So I changed the config file with vcpus=2 But that doesn''t help and the command xm vcpu-set ... doesn''t change the actual number of vcpus either. It is weird that the dom0 appears as many as the number of cores if I use "xm vcpu-list": Name

Hi, We can give multiple domains to the following commands. But, the help messages of the commands are explained to be able to give a single domain. # xm vcpu-list vm1 vm2 Name ID VCPU CPU State Time(s) CPU Affinity vm1 1 0 0 r-- 1409.3 any cpu vm2 2 0 0 r-- 1255.8

hi, i am trying to find out the max vcpus supported for any domain by my hypervisor, however i am having some trouble with the below: vcpu=5 maxvcpus=libvirt.virConnect.getMaxVcpus(conn,'kqemu') if maxvcpus <= vcpu: logging.debug('checkmaxvcpus: max vcpus on hypervisor %i is less than requested vcpu of %i' % (maxvcpus, vcpu)) return 0 else: return 1

Hi, I have a couple of questions. on Xentop: In Xentop what does the NETS column mean. I see a NETTX and a NETRX, and i think they mean the number of network bytes transmitted and received. Also what does the VBDs number mean. Is that the number of block device IO operations? or the number of IO bytes. on vcpu-list: I expected that at any point of time a pcpu would have only 1VMID in

Hi, Xm list and xm vcpu-list show wrong DomID(name). Under this situation, # xm list Name ID Mem(MiB) VCPUs State Time(s) Domain-0 0 512 1 r----- 1064.6 test1 13 64 1 r----- 83879.7 # xm list 1 13 Error: Domain ''1'' not found when running ''xm list'' # xm list

On a fresh reboot free: total used free shared buffers cached Mem: 3371340 448156 2923184 0 5328 77840 ---------- top: Mem: 3371340k total, 449044k used, 2922296k free, 5344k buffers ---------- xentop - 01:44:00 Xen 3.4.3-rc4-pre 1 domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown Mem: 4160828k total, 4022996k used, 137832k free CPUs: 4

I tried netperf / netserver with Dom0 / DomU, but I could''nt get a correct NW traffic with xentop. Is there anybody could help me? At Host1''s Dom0, run netperf -H VMIP At Host2''s DomU (with VMIP named TTVM), run netserver At Host1, run xentop this way ->"xentop -n -b -d 1" At Host2, run xentop this way->"xentop -n -b -d 1" In Host2''s

I am running xen 3.0.3_11774, which I assume is patch level 11774 of 3.0.3, but I am not sure. This is the standard version included with OpenSuse 10.2 I am running OpenSuse 10.2 as the host dom0, on a quad-core AMD processor. The guest is running with full virtualization, and is also OpenSuse 10.2 No matter what I set vcpus to in the .hvm config file, the guest only sees a single processor.

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

Hi. These patches add the output function for blktap statistics into xentop. Currently, xentop outputs only blkback statistics, and not blktap statistics. By these patches, xentop is made cover both blkback and blktap. In xen, back-end driver has two types; blkback and blktap. Blkback driver is old back-end driver. Blktap driver is new back-end driver and is recommended currently. Usage of both

Hi all, Now I use xentop to get disk statistical information. NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD VBD_WR VBD_RSECT VBD_WSECT SSID Domain-0 -----r 96233 0.7 3902464 23.3 no limit n/a 12 0 0 0 0 0 0 0 0 0 0 slave3

On 05/28/2013 01:24 AM, Dennis Chen wrote: > Hi, > > We know that there is a command "setvcpus" in virsh used to "change > number of virtual CPUs", now we just have the need to change vcpu count > dynamically for a running VM, so I tried this command (the vcpu count is > 2 in the VM xml file), below is the result: > > virsh # setvcpus 3 --count 4 >

Support the vcpu_is_preempted() functionality under KVM. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far worse than early yielding. Use one field of struct kvm_steal_time to indicate that if one vcpu is running or not. unix benchmark result: host: kernel

Hi all, On xen platform, the output of xentop tool is like this: NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k)VBDS VBD_OO VBD_RD VBD_WR VBD_RSECT VBD_WSECT SSID Domain-0 -----r 96025 0.0 3902464 23.3 no limit n/a 12 0 0 0 0 0 0 0 0 0 0 slave3

Hi, We know that there is a command "setvcpus" in virsh used to "change number of virtual CPUs", now we just have the need to change vcpu count dynamically for a running VM, so I tried this command (the vcpu count is 2 in the VM xml file), below is the result: virsh # setvcpus 3 --count 4 error: invalid argument: requested vcpus is greater than max allowable vcpus for the