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Old 08-05-2011, 04:59 AM
"Amit Tewari"
Default Cgroup not distributing io bandwidth according to blkio weight parameter among kvm guest

Hi all,

I am having following test setup

Host machine=Rhel 6.1 enterprise with kvm

Number of virtual machines=2

Guest machine os=rhel6.1 enterprise

I am using kvm virtual environment using libvirt

Now when iam specifying blkio.weight parameter on one guest=1000

And on other guest=500

Now as per cgroup bandwidth should be propotionally distributed on both
the guests,but when I analysed the disk read write bytes ,it seems that
cgroup is not doing any impact.

Bandwidth on both guests is not as per the weight assigned to the guest.

Please help if anybody has used cgroup on kvm environment


Amit Tewari


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