리눅스 Filesystem cache 정책 변경

 

test1:/hana/shared/51051152/DATA_UNITS/HDB_LCM_LINUX_PPC64 # free -m
             total       used       free     shared    buffers     cached
Mem:         30579      30515         64        788         73      13142
-/+ buffers/cache:      17299      13280
Swap:         2053         23       2030

 

test1:/hana/shared/51051152/DATA_UNITS/HDB_LCM_LINUX_PPC64 #
test1:/hana/shared/51051152/DATA_UNITS/HDB_LCM_LINUX_PPC64 #
test1:/hana/shared/51051152/DATA_UNITS/HDB_LCM_LINUX_PPC64 #
test1:/hana/shared/51051152/DATA_UNITS/HDB_LCM_LINUX_PPC64 # sysctl -w vm.drop_caches=3
vm.drop_caches = 3

test1:/hana/shared/51051152/DATA_UNITS/HDB_LCM_LINUX_PPC64 #

test1:/hana/shared/51051152/DATA_UNITS/HDB_LCM_LINUX_PPC64 # free -m
             total       used       free     shared    buffers     cached
Mem:         30579      18710      11869        788          4       1421
-/+ buffers/cache:      17285      13294
Swap:         2053         23       2030

 

 

참고 : http://tumblr.lunatine.net/post/28546340998/faq-linux-%EB%A9%94%EB%AA%A8%EB%A6%AC-%ED%9A%A8%EC%9C%A8%EC%9D%84-%EC%9C%84%ED%95%9C-vfscachepressure