ceilometer/releasenotes/notes/use-usable-metric-if-available-970ee58e8fdeece6.yaml
Chen Hanxiao 2dee485da7 inspector: memory: use usable of memoryStats if available
Since kernel v4.6, virtio balloon driver commit 5057dcd0f
introduced metric VIRTIO_BALLOON_S_AVAIL,
corresponding to 'Available' in /proc/meminfo.
Libvirt exposed this metric as 'usable'.

As 'Available' of meminfo is an estimate of how much memory
is available for starting new applications, without swapping.

It's a better metric for calculating memory_usage.

Change-Id: I3b935f1fc2ed74ca45b26990c4f2bd5996e1dfea
Signed-off-by: Chen Hanxiao <chenhx@certusnet.com.cn>
2018-05-14 14:36:37 +08:00

4 lines
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YAML

---
features:
- use memory usable metric from libvirt memoryStats if available.