The benefits of jemalloc versus glibc memory allocator for use with MySQL have been widely discussed. With jemalloc (along with Transparent Huge Pages disabled) there is less memory fragmentation, and thus more efficient resource management of the server memory. For MySQL 5.6, installing jemalloc is enough to enable it when starting the MySQL process. However, for [&]

https://www.percona.com/blog/2020/12/02/enabling-jemalloc-on-percona-server-for-mysql-5-7-and-8-0-series/