xen server 获取不到 slave Host的CPU使用率的解决方案

First, use the xe host-list command to find the UUID of the xenserver host.

Example:

xe host-list

Second, type the command that changes the Round Robin Database collection interval.

Example:

xe host-param-set uuid=(the UUID you discovered from the xe host-list command) other-config:rrd_update_interval=1

and then hit enter. You could enter 2 if you want but is for 1 minute intervals. A value of 1 is for 5 second intervals.

Aftwards you must restart XenServer for it to take effect. When the XenServer is back up you will then need to run Autodiscovery from the Tools menu of the Platform. After that - magic - you get everything!

搞定！！！