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2014 Sep 10
2
Scaling virt-df performance
Hello,
I have been looking at the "virt-df" libguestfs tool to get guest-level disk used/free statistics - specifically with Qemu-KVM/Openstack. This works great for a few Openstack instances, but when I begin to scale (even to ~30 instances/guests) the performance really takes a hit. The time it takes for the command to complete seems to scale linearly with the amount of guests/domains