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Linux releases cache memory

Source: Internet
Author: User
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Before releasing memory

# free-m
Total used free shared buffers Cached
mem:7831 7704 127 0 256 6813
-/+ buffers/cache:634 7197
swap:7999 0 7999


Sync && echo 1 >/proc/sys/vm/drop_caches
Sync && echo 2 >/proc/sys/vm/drop_caches
Sync && echo 3 >/proc/sys/vm/drop_caches




After releasing memory

# free-m
Total used free shared buffers Cached
mem:7831 365 7466 0 0 18
-/+ buffers/cache:346 7485
swap:7999 0 7999

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Linux releases cache memory

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