Performance issues when have 1k+ Ironic BM instances
Bug #1559246 reported by
sergiiF
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
OpenStack Compute (nova) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
We have an Ironic deployment with about 1500 BMs, 1k+ of them are already provisioned.
The current Ironic architecture doesn't allow us to have more than one 'ironic compute node'. As a result nova-compute service is 100% busy with periodic tasks like updating instances status (this task takes about 1.5 minute!!).
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This lacking quite a bit of information. First, what version of nova/ironic are you on?
Have you done any profiling to see what bottlenecks there might be?
Which periodic tasks specifically are taking a long time?
Also, what is the size of the deployment (how big is the controller)? Talking CPUs/RAM here.