Feature #472
Get cpu consumption from KVM VMs
| Status: | Closed | Start date: | 01/21/2011 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: |  Javi Fontan |
% Done: | 0% |
|
| Category: | Drivers | |||
| Target version: | Release 2.2 | |||
| Resolution: | fixed | |||
| Story points | - | |||
| Velocity based estimate | - |
Description
KVM virtual machines lack cpu consumption information
Associated revisions
New probes and ganglia readers
Feature #244: Network interface statistics for KVM
Feature #446: Probe to get monitoring info from ganglia
Feature #472: Get cpu consumption from KVM VMs
poll_xen_kvm.rb - This new probe gets information from XEN and KVM vms.
If it is called with the name of a VM then its monitoring information
is written in standard poll probe way. If called without parameters
a base64-encoded yaml-representation of a hash containing the information
about all the VMs running in the host is returned.
poll_ganglia.rb - This probe gets information from ganglia pushed by gmetric.
Consumes the information generated by poll_xen_kvm.rb
ganglia_probe - Gets host monitoring information from ganglia. It pushes all
metrics that start by OPENNEBULA_
Ganglia.rb - library that holds ganglia reading code
New probes and ganglia readers (from branch feature-446)
Feature #244: Network interface statistics for KVM
Feature #446: Probe to get monitoring info from ganglia
Feature #472: Get cpu consumption from KVM VMs
poll_xen_kvm.rb - This new probe gets information from XEN and KVM vms.
If it is called with the name of a VM then its monitoring information
is written in standard poll probe way. If called without parameters
a base64-encoded yaml-representation of a hash containing the information
about all the VMs running in the host is returned.
poll_ganglia.rb - This probe gets information from ganglia pushed by gmetric.
Consumes the information generated by poll_xen_kvm.rb
ganglia_probe - Gets host monitoring information from ganglia. It pushes all
metrics that start by OPENNEBULA_
Ganglia.rb - library that holds ganglia reading code
History
Updated by Ruben S. Montero over 1 year ago
- Target version set to Release 2.2
Updated by Shi Jin about 1 year ago
I am very happy to see the monitoring code here.
Just one thing: the poll code calls the ps command for CPU utilization which is the average from the starting of the VM while I would say we should use something like top to get more instantaneous (averaged since last top update, typically 3 seconds) CPU monitoring. Of course we need to first define what the CPU column from the "onevm list" output is for: instantaneous or average from the start.
Thank you.
Shi
Updated by Javi Fontan about 1 year ago
- Status changed from Assigned to Closed
- Resolution set to fixed
We will deal with the way we get CPU info for kvm machines in later releases.