DISK IO is high

Hi there:
We found the influxdb will have a high disk IO usage, I wonder if there any configuration to optimize the performance?

In this pic, the green one is the disk read usage, the blue one is the disk write usage. Unit
of the metric is block per second.We found that after stop writing new data to the influxdb, it still have the IO usage.

Hello @jacky_leung,
I’m not sure. Can you provide your write ingest rate, cardinality, retention policies, and HW information?


  1. Thers is almost 2million TS .
  2. The default RP is 30 days.
  3. It runs on a CVM with 32 vCPU, 128GiB RAM, 3570GiB local NVMe SSD