Influxdb keeps high memory after querying data for a long period of time

The question about memory when querying

  • When I use the shell to do a long-term data query in influxdb, the memory occupancy rate has continued to exceed 90%. It does not decrease.
  • Query speed is not slow.
  • The data volume is about 300,000 data in 10 minutes.
  • The dev environment: Ubuntu ; memory:32G; influxdb 1.7.9.

thank you please.