Hi Sandeep,
As per my understanding all data collection about the HANA instance is done by the Statistics collectors
The recommendation is to use Embedded Statistics Server(ESS) on SPS08, Can you check if you are using the ESS and not a Standalone Statisticsserver?
Also check if the ID=5 is showing up ON SCHEDULE=YES under the below path on HANA studio?
This should confirm Statistics server data collection for CPU usage is working (as seen in the screenshot)
HANA Studio--> ALERTS-->CHECK INFORMATION
Hope it helps
Sunil