If customer is facing this issue than there is a possibility that “use_systemspace” is NO in user environment. Please check key “use_systemspace” in cdm probe CFG at customer environment and also request customer for the Disk usage information with "use_systemspace = YES"
The key is only works at the Disk level for non-custom disks
interval = 15 min
samples = 4
use_systemspace = yes
qos_disk_total_byte_rate = no
filesystem_type_regex = /tmpfs/