OceanStor V3 storage resources are mapped to the bare devices on the host.

OceanStor V3 storage resources are mapped to the bare devices on the host. The host creates a dedicated file system on the host. The testtool is used in the file system. The system produces a large number of 13KB size files, you randomly read these files to test the response time. Changing the prefetch length of 16KB can improve system performance in this case.