I know this is a lame question, but I want to understand why CentOS consumes my Physical memory when certain process stopped.Suppose I have opened a file of 10GB then it consumes 10GB in ram and buffers when I finished the process and closes the file, then CentOS still holds my 10GB of ram.When I run free command it gives me following details:11.4 GB are usedin buffers: 6336in cached: 49168-/+ buffers/cache: 11.4GB usedwhen I try to free up my memory using following solutions:How do you empty the buffers and cache on a Linux system?How to clear memory cache in LinuxSetting /proc/sys/vm/drop_caches to clear cache-/+ buffers/cache: still holds 11.4 GB.
What does -/+ buffers/cache means in the output of free?
linux;memory