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  GNU / Linux system, how to clean up memory space
  Add Date : 2018-11-21      
  After opening consume a lot of memory-intensive programs, after close these programs and found that memory space is occupied and not closed when the application is the same, to cause other applications open when not enough memory or very slow, then the time wanted to clean out previously the program to open the memory occupied, and most of them are occupied by the data cache, then how clean it for memory? Use the following steps to clean up the memory:

Most GNU Linux is enabled by default caching mechanism to check the configuration file cat / proc / sys / vm / drop_caches if it is 0, it means open the caching mechanism, this mechanism when a service has been running very effective, easy to quickly read the service itself, but as a desktop user, open programs not so simple, so it is recommended to set this desktop user profile 1, in a timely manner to clean up the system cache, freeing up space for other programs use.

1. Before clearing the memory usage
free -h

2. Start Cleanup
echo 1> / proc / sys / vm / drop_caches

3. After cleaning up memory usage
free -h

About drop_caches meant to make clear the memory system page cache, resulting in more available memory.
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