如何在ubuntu上默认启用透明的大页面？
$uname -a Linux yoda 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 17:13:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux ~$cd /sys/kernel/mm/transparent_hugepage/ /sys/kernel/mm/transparent_hugepage$ls defrag enabled khugepaged /sys/kernel/mm/transparent_hugepage$cat enabled always [madvise] never /sys/kernel/mm/transparent_hugepage$sudo echo always > enabled -bash: enabled: Permission denied /sys/kernel/mm/transparent_hugepage$sudo ls [sudo] password for <...>: defrag enabled khugepaged /sys/kernel/mm/transparent_hugepage$sudo ls defrag enabled khugepaged /sys/kernel/mm/transparent_hugepage$sudo echo always > enabled -bash: enabled: Permission denied /sys/kernel/mm/transparent_hugepage$cat enabled always [madvise] never
