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Here is your answer. First, use Chrome as browser, second you need to go with atleast 4vCPU*32GB of RAM & adjust the java heap sizes for SSO, Tomcat management server (TC), inventory server and Profile driven storage to "fine tune" vCenter appliance with embedded or external Oracle DB. I did this and performance gains went 10X. This includes running vSAN enabled clusters. My recommendation that works great based on design documents:
Large inventory (More than 400 hosts or 4000 virtual machines) |
Memory tuning on vCenter server appliance 5.5
- Log in to vCenter server appliance using SSH
- vi /usr/lib/vmware-vsphere-client/server/wrapper/conf/wrapper.conf configuration file, look for JVM memory section and change maxmemory to 4096
| Line 66 | ############## JVM Memory#############wrapper.java.initmemory=512wrapper.java.maxmemory=4096 |
- vi /usr/lib/vmware-vpx/inventoryservice/wrapper/conf/wrapper.conf configuration file, find wrapper.java.maxmemory parameter and change it to 12288
| Line 116 | # Maximum Java Heap Size (in MB)wrapper.java.maxmemory=12288 |
- vi /usr/lib/vmware-vpx/sps/wrapper/conf/wrapper.conf find wrapper.java.maxmemory parameter and change it from 1024 to 4096
| Line 154 | # Maximum Java Heap Size (in MB)wrapper.java.maxmemory=4096 |
- Reboot vCenter Appliance w/ external DB(1000 hosts)/embedded for lab (100 Hosts)
vSphere 5.5 Documentation Center
PS: vCenter 6.0 has much better performance based on my beta testing .. so don't loose hope yet. Lots of enhancements coming ...
PS: I also vented about this here until I figured this out just recently: Re: Large customer - vCenter 5.5 U1c Web Client Response Time/ Performance and Navigation issues