centos中释放缓存的方法
2024-08-26 21:02:24
释放缓存区内存的方法
a)清理pagecache(页面缓存)
# echo > /proc/sys/vm/drop_caches 或者 # sysctl -w vm.drop_caches= b)清理dentries(目录缓存)和inodes
# echo > /proc/sys/vm/drop_caches 或者 # sysctl -w vm.drop_caches= c)清理pagecache、dentries和inodes
# echo > /proc/sys/vm/drop_caches 或者 # sysctl -w vm.drop_caches= [root@test4_haili_dev hadoop-2.7.]# free -m
total used free shared buffers cached
Mem:
-/+ buffers/cache:
Swap:
[root@test4_haili_dev hadoop-2.7.]# cat /proc/sys/vm/drop_caches [root@test4_haili_dev hadoop-2.7.]# echo > /proc/sys/vm/drop_caches
[root@test4_haili_dev hadoop-2.7.]# free -m
total used free shared buffers cached
Mem:
-/+ buffers/cache:
Swap:
[root@test4_haili_dev hadoop-2.7.]# cat /proc/sys/vm/drop_caches [root@test4_haili_dev hadoop-2.7.]# echo > /proc/sys/vm/drop_caches
[root@test4_haili_dev hadoop-2.7.]# cat /proc/sys/vm/drop_caches [root@test4_haili_dev hadoop-2.7.]# free -m
total used free shared buffers cached
Mem:
-/+ buffers/cache:
Swap:
[root@test4_haili_dev hadoop-2.7.]# cat /proc/sys/vm/drop_caches [root@test4_haili_dev hadoop-2.7.]# echo > /proc/sys/vm/drop_caches
[root@test4_haili_dev hadoop-2.7.]# free -m
total used free shared buffers cached
Mem:
-/+ buffers/cache:
Swap:
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