What Problems?
When you configure large-pages system variables enable, You may see errors.InnoDB: HugeTLB: Warning: Failed to allocate 4194304 bytes. errno 12
InnoDB HugeTLB: Warning: Using conventional memory pool
What for?
In MySQL, InnoDB support large pages to allocate memory for its buffer pool. So, When you confugre large-pages variables enable for using large page, The system must be configure 4MB as Huge page.If huge page's size is less than 4 MB, You must increase greater than 4MB.
What can I do for fixing Problem?
You should increase greater than 4MB.You can find current page size.
grep -i huge /proc/meminfo
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 2048 kB
You can see more detail this url.
http://dev.mysql.com/doc/refman/5.6/en/large-page-support.html
