All the metrics were missing from the agents and it looks like the below in Introscope.
I can see this message in the Collector logs. "EM load exceeds hardware capacity. Timeslice data is being aggregated into longer periods."
Also I see a clamp in status console for introscope.enterprisemanager.metrics.historical.limit, reached 1,200,000 and no new metrics were populated in Introscope. I have manually increased the value in all the collectors to 1,300,000. But I need to fix this issue. Can you help me on how to remove the old historical metrics.
Note: This is our production environment and we have 9.5.2 version with 1 MOM and 4 Collectors in a Linux box.