CentOS 7 Huge Pages General Question
by skagnola from LinuxQuestions.org on (#5874H)
Hello, All
I've worked with hugepage settings in Linux for a while, but the mechanics of one part - why it is strongly advised to reboot the server when applying it - I have not been able to get a grasp on.
I recall other systems folks in AIX environments mention that when they apply 'large pages' it does not require rebooting. They are able to allocate the space in a contiguous manner.
What is different in the Linux kernel that prevents a guaranteed, contiguous allocation of the space if you attempt a sysctl -f /etc/sysctl.conf without a reboot?
I guess I'm looking for more verbose info as to why/how this functionality is different in Linux vs AIX. In my searching the web I can find plenty of how-to's but not much on the core, engineered functionality reasoning.
Any insight from some of you Linux Wizards out there is appreciated! :-)
I've worked with hugepage settings in Linux for a while, but the mechanics of one part - why it is strongly advised to reboot the server when applying it - I have not been able to get a grasp on.
I recall other systems folks in AIX environments mention that when they apply 'large pages' it does not require rebooting. They are able to allocate the space in a contiguous manner.
What is different in the Linux kernel that prevents a guaranteed, contiguous allocation of the space if you attempt a sysctl -f /etc/sysctl.conf without a reboot?
I guess I'm looking for more verbose info as to why/how this functionality is different in Linux vs AIX. In my searching the web I can find plenty of how-to's but not much on the core, engineered functionality reasoning.
Any insight from some of you Linux Wizards out there is appreciated! :-)