On 11/06/21 08:57, Christian Borntraeger wrote:
On 03.06.21 23:14, Jing Zhang wrote:
This patchset provides a file descriptor for every VM and VCPU to read KVM statistics data in binary format. It is meant to provide a lightweight, flexible, scalable and efficient lock-free solution for user space telemetry applications to pull the statistics data periodically for large scale systems. The pulling frequency could be as high as a few times per second. In this patchset, every statistics data are treated to have some attributes as below: * architecture dependent or generic * VM statistics data or VCPU statistics data
Are the debugfs things good enough, or do we want to also add the same ioctl for the /dev/kvm to get the global counters as well, e.g. for tools like kvm_stat?
I think we should, yes. We should also add the summarized VCPU statistics to the VM-level file descriptor. However, it can be done in steps.
Paolo