查看

root@node4:/usr/local/mongo/bin# cat /sys/kernel/mm/transparent_hugepage/enabled 
always [madvise] neve

root@node4:/usr/local/mongo/bin# cat /sys/kernel/mm/transparent_hugepage/defrag 
always defer defer+madvise [madvise] never

设置

root@node4:/usr/local/mongo/bin# echo never > /sys/kernel/mm/transparent_hugepage/enabled
root@node4:/usr/local/mongo/bin# cat /sys/kernel/mm/transparent_hugepage/enabled 
always madvise [never]
root@node4:/usr/local/mongo/bin# 

root@node4:/usr/local/mongo/bin# echo never > /sys/kernel/mm/transparent_hugepage/defrag 
root@node4:/usr/local/mongo/bin# cat /sys/kernel/mm/transparent_hugepage/defrag 
always defer defer+madvise madvise [never]
root@node4:/usr/local/mongo/bin#