RHEVM: Even Distribution question

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Hello

 

I have a six node cluster. The cluster is configured with the Even Distribution policy with Maximum service set at 75%.

The Power Saving policy is disabled.

I have a number of VM's all currently running on one node of the six node cluster.

I would expect the Even Distribution policy to kick in and live-migrate the VM load evenly across the six nodes of the cluster.

This does not appear to be happening.    Am I missing something ?

 

Secondly, does that 75% Maximum Service take into account the 150% Server Load Memory Optimisation ?

Or is that 75% a combination of CPU and Memory Optimised Server Load ?

 

I've lifted an extract from the log which might help :-

 

2012-10-11 16:56:59,609 INFO  [org.ovirt.engine.core.bll.VdsLoadBalancer] (QuartzScheduler_Worker-19) VdsLoadBalancer: Starting load balance for cluster: RHPHYP01, algorithm: EvenlyDistribute.
2012-10-11 16:56:59,609 INFO  [org.ovirt.engine.core.bll.VdsLoadBalancer] (QuartzScheduler_Worker-19) VdsLoadBalancer: high util: 75, low util: 0, duration: 2, threashold: 80
2012-10-11 16:56:59,622 INFO  [org.ovirt.engine.core.bll.VdsLoadBalancingAlgorithm] (QuartzScheduler_Worker-19) VdsLoadBalancer: number of relevant vdss (no migration, no pending): 6.
2012-10-11 16:56:59,622 INFO  [org.ovirt.engine.core.bll.VdsCpuVdsLoadBalancingAlgorithm] (QuartzScheduler_Worker-19) VdsLoadBalancer: number of over utilized vdss found: 0.
2012-10-11 16:56:59,622 INFO  [org.ovirt.engine.core.bll.VdsCpuVdsLoadBalancingAlgorithm] (QuartzScheduler_Worker-19) VdsLoadBalancer: max cpu limit: 60, number of ready to migration vdss: 6

 

Thank You
 

Responses

Have you seen https://access.redhat.com/knowledge/videos/214703 ? Pretty good demo and explanation of the way cluster policies work

That's clearer now,  thanks again.

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