how do I enable transparent huge pages by default on ubuntu? -


how enable transparent huge pages default on ubuntu ?

$ 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  [madvise] never  /sys/kernel/mm/transparent_hugepage$ sudo echo > enabled  -bash: enabled: permission denied  /sys/kernel/mm/transparent_hugepage$ sudo ls [sudo] password <...>:  defrag  enabled  khugepaged  /sys/kernel/mm/transparent_hugepage$ sudo ls defrag  enabled  khugepaged  /sys/kernel/mm/transparent_hugepage$ sudo echo > enabled  -bash: enabled: permission denied  /sys/kernel/mm/transparent_hugepage$ cat enabled  [madvise] never

adding following:

transparent_hugepage=always

to grub_cmdline_linux_default in your:

/etc/default/grub

and doing a:

update-grub

should trick.


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