When Centos is used to release the cache, it will find that sometimes the system is idle, but all the memory is consumed. Www.2cto.com is actually an illusion that the memory is not actually consumed but used as a cache. when the system has programs running these memories, it can still be used for program running...
When Centos is used to release the cache, it will find that sometimes the system is idle, but all the memory is consumed. Www.2cto.com is actually an illusion that the memory is not actually consumed but used as a cache,
When the system runs the program, the memory can still be used for running the program. To release the cache as soon as possible, run the following command. To avoid data loss in the cache, run the following command: www.2cto.com sync # To free pagecache: echo 1>/proc/sys/vm/drop_caches # To free dentries and inodes: echo 2>/proc/sys/vm/drop_caches # To free pagecache, dentries and inodes: echo 3>/proc/sys/vm/drop_caches
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