Jemalloc installed but not shown as being used after reboot (RHEL 7.6)

I installed Percona and want to use jemalloc as stated here
https://www.percona.com/blog/2017/01/03/enabling-and-disabling-jemalloc-on-percona-server/

I rebooted as stated in the instructions, but when the database returns I find its not applied jemalloc

Percona version

I check the status with:
pt-mysql-summary | grep -A5 -i “memory management”

pt-mysql-summary | grep -A5 -i “memory management”

Memory management library

jemalloc is not enabled in mysql config for process with id 12999

The End

find / -name “libjemalloc*”

/usr/lib64/libjemalloc.so.1

So can I find some clues as to why its not being used by Percona ? I need this functionality as this database will be under quite some load.

Thanks!

/etc/sysconfig/mysql should contain
LD_PRELOAD=/usr/lib64/libjemalloc.so.1 # Memory management library ################################## jemalloc enabled in mysql config for process with id 17795 Using jemalloc from /usr/lib64/libjemalloc.so.1 # The End ####################################################