在HDFS,Oracle,mongodb等軟件時(shí)候辟犀,都會(huì)提醒關(guān)閉hugepage 設(shè)置。
下面是mongodb進(jìn)入CLI時(shí)的提醒
2018-05-16T12:07:48.356+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2018-05-16T12:07:48.356+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-05-16T12:07:48.356+0800 I CONTROL [initandlisten]
2018-05-16T12:07:48.356+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2018-05-16T12:07:48.356+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
在Centos上的修改方法
[root@SJZX-test03 ~]# echo never > /sys/kernel/mm/transparent_hugepage/enabled
[root@SJZX-test03 ~]# echo never > /sys/kernel/mm/transparent_hugepage/defrag
never
hugepage的設(shè)置
always表示在系統(tǒng)啟動(dòng)時(shí)候至非,自動(dòng)分配內(nèi)存,
never表示有軟件自己分配內(nèi)存糠聪。
最后再加入開(kāi)機(jī)啟動(dòng)文件rc.local重啟生效荒椭。