THP关闭方法-Transparent Pages

标签：virt   整理   没有   case   rtu   hugepage   crash   profile   grub2   

#!/bin/bash

case $1 in
          start)
            if [ -d /sys/kernel/mm/transparent_hugepage ]; then
              thp_path=/sys/kernel/mm/transparent_hugepage
            elif [ -d /sys/kernel/mm/redhat_transparent_hugepage ]; then
              thp_path=/sys/kernel/mm/redhat_transparent_hugepage
            else
              return 0
            fi

            echo ‘never‘ > ${thp_path}/enabled
            echo ‘never‘ > ${thp_path}/defrag

            re=‘^[0-1]+$‘
            if [[ $(cat ${thp_path}/khugepaged/defrag) =~ $re ]]
            then
              #RHEL 7
              echo 0  > ${thp_path}/khugepaged/defrag
            else
              #RHEL 6
              echo ‘no‘ > ${thp_path}/khugepaged/defrag
            fi

            unset re
            unset thp_path
            ;;
esac

mkdir /etc/tuned/no-thp -p
echo -e "[main]\ninclude=virtual-guest\n[vm]\ntransparent_hugepages=never" >/etc/tuned/no-thp/tuned.conf
tuned-adm profile no-thp

cat /sys/kernel/mm/transparent_hugepage/enabled
cat /sys/kernel/mm/transparent_hugepage/defrag
#都是always madvise [never]才可以。这个是不用重启机器。

THP关闭方法-Transparent Pages

标签：virt   整理   没有   case   rtu   hugepage   crash   profile   grub2   

原文地址：http://blog.51cto.com/laodou/2326610