Dear all, On my test-lab environment, I encountered some cases of CloudStack performance issue where creation or deleting VMs will become very slow. This normally happens when I tried to do two or three simultaneous tasks at the same time. I would need to wait 10-15 minutes just for a VM to be created, started, stopped or destroyed.
Sometimes, certain tasks will not be completed at all and I need to reboot the CloudStack management server for the tasks to complete. Some tasks might fail, but will be OK when I try to attempt again. Sometimes, it will cause the KVM hypervisor host to be in "discrd onnected" state and I have to reboot the host. Where can I start troubleshooting, which logs I need to go through to find out the bottleneck? The management-server.log file doesn't show much anything about the delay. It seems that there is some "locking" mechanism and certain processes will need other processes to complete before they can start. This is worrying since in a production environment, many customers might want to try creating VMs at the same time simultaneously. Any thoughts or feedback on this matter is appreciated. Looking forward to your reply, thank you. Cheers.
