Release unused memory or cache under Linux
We must recognize that with my model B 256 MB and my desire to install services to shovel I'm quickly during memory. During my search on the Internet I came across a rather interesting post about the memory management here.
So if you want to free the cache memory or memory not used, just send 3 in the file /proc/sys/vm/drop_caches
Actually, It frees memory that will be taken up by the process as and. But processes as for Time Machine that launches 1 Once an hour can release memory to do resume only when the next.
In short it is not big thing but if it can help … 😉