VMworld 2015/Extreme vCenter Performance
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Extreme vCenter Performance
Extreme vCenter Performance
vCenter Components:
- Web Client Server
- VPXD – primarily task execution, sends tasks to appropriate host, retrieves config changes, pushes config updates, inserts stats into db, responds to API requests
- SSO – single sign on (talks to Active Directory)
- Database
- Inventory Service (offload queries from VPXD)
- Various other services (eg Health and statistics)
- Content Library
Content Library performance: http://blogs.vmware.com/performance/2015/07/efficiently-deploy-vms-vmware-vsphere-content-library.html
vcenter appliance – vimtop (have to enable ssh)
What affects vcenter:
- ‘churn’ – out of the box settings should be fine for ‘light’ workloads
- Inventory size and host/vm configuration
- #of plugins/extensions
- Stats level and retention settings
Top Consumers:
- Inventory service (java) based on inventory size
- Vpxd (c++)
- ?
- ?
In 6.0 simply add more memory to VM and reboot, and the Heap sizes will be automatically adjusted. (This would not work in 5.5)
Most traffic is write traffic. SSDs provide a significant performance benefit over magnetic storage.