Gordon Messmer wrote:
On 06/02/2017 04:32 AM, hw wrote:
What may cause the high CPU load?
Offhand, it's hard to say. I don't see similar behavior. Can you post the libvirt XML definitions for those VMs somewhere? pastebin maybe? What's the output of "rpm -qa qemu\*"?
qemu-img-1.5.3-126.el7_3.6.x86_64
qemu-kvm-tools-1.5.3-126.el7_3.6.x86_64
qemu-kvm-common-1.5.3-126.el7_3.6.x86_64
qemu-kvm-1.5.3-126.el7_3.6.x86_64
The definitions aren´t too long, I could post them here. There´s
nothing special about them AFAICT; I disabled USB and am trying
to use kvmclock.
I´m finding the number of "Local timer interrupts" suspicious. From
'cat /proc/interrupts' for CPU0:
Tue Jun 6 20:01:53 CEST 2017: 217433736
Thu Jun 8 13:23:04 CEST 2017: 350172149
That seems an awful lot of interrupts. Is this normal?
There´s also a huge amount of "Rescheduling interrupts" (102113959 earlier,
now 209740910). The VMs are pinned to CPUs, so what´s being rescheduled
so frequently?
I can observe that CPU load of the host goes up with increases in network
traffic of the guest. Is it a bad idea to assign a bonding interface
to a bridge?
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