Feedback the diag-info.
According to the diag-info, the cached memory utilisation is
around 24% which is relatively high.
Memory statistics are measured in KB:
Buffers Cached FreeRatio
-/+ Buffers/Cache: 203000
Cached memory is a mechanism used by Linux to speed up file read
and write speed. It cannot be disabled and it would be automatically reclaimed
by the system before memory thresholds are triggered. Recycled memory would be
what no one is using and what is in use will not be released and will not
affect other services.