In the Ceph scenario, enabling tcmalloc huge pages can
reduce the TLB miss rate and improve performance.
However, tcmalloc does not support huge page release. Therefore,
release logic needs to be added. In this way, when
the tcmalloc huge page is used, the memory can be
released from the OS, preventing memory overuse.
The libtcmalloc_2m.so file is added to tcmalloc to support
hugetlb and services that require 2 MB tcmalloc.
The native tcmalloc.so file is not affected.
Signed-off-by: liubo <liubo254@huawei.com>
