More details on the subject:
I suppose it is a nested KVM issue because it raised after I enabled the
nested KVM feature. Without it, anyway, the second level VMs are unusable
in terms of performance.
I am using CentOS 7 with:
kernel: 3.10.0-327.22.2.el7.x86_64
qemu-kvm:1.5.3-105.el7_2.4
libvirt
From: centos-virt-boun...@centos.org on behalf
of Laurentiu Soica
Sent: Sunday, August 14, 2016 10:17 AM
To: Discussion about the virtualization on CentOS
Subject: Re: [CentOS-virt] Nested KVM issue
More details on the subject:
I suppose it is a nested KVM i
Hello,
1.
baremetalbrbm_1
534e9b54-5e4c-4acb-adcf-793f841551a7
104857600
104857600
36
/machine
hvm
destroy
restart
restart
/usr/libexec/qemu-kvm
Reports posted look good for me. Config should provide the best available
performance
for cloud VM (L2) on Compute Node.
1. Please, remind me what goes wrong from your standpoint ?
2. Which CPU is installed on Compute Node && how much RAM ?
Actually , my concern is :-
Number_
Hello Borins,
1. So, in about three days after a reboot (this happened several times
already) the compute node reports high CPU usage. It has 36 vCPUs and it
reports a load higher than 40. Usually the load is about 2 or 3.
The VMs qemu-kvm processes reports 100% CPU usage (for a VM with 4 CPU it
r
I would attempt to decrease number of VCPUS allocated to cloud VMs.
Say try 4 => 2 . My guess there is not enough VCPUs to run OS itself.
I also guess CPU model << Haswell. Please , confirm ( or not) if possible.
Since Haswell was launched via my experience Intel Xeons based on this kernel
(o
The CPUs are IvyBridge microarchitecture, Xeon E5-2670 v2.
I could try lowering the vCPUs but I doubt it would help. Please note that
the same VMs are running just fine (with a load of 2 out of an acceptable
36 on the compute node) for about 3 days after a restart.
În lun., 15 aug. 2016 la 08:42,
