The evicted-count attribute of the sample cache sets the number of entries that have been evicted from the cache due to a lack of space. The cache might not be large enough for the query load placed on the server.

  1. To increase the size of the sample cache to the maximum size of 200000, run the following command: 
    $ dsconfig set-monitoring-configuration-prop \
  --set sample-cache-max-cached-series:200000
    Note:

    Some queries are so infrequent that the cached data expires due to age. The default age is 10 minutes, but this can be increased up to one hour.

  2. Optional: If the expired-count monitor attribute is increasing between queries, consider increasing the idle timeout with the command: 
    $ dsconfig set-monitoring-configuration-prop \
  --set sample-cache-idle-series-timeout:20m