suse:~ # cat /etc/*rele*
NAME="openSUSE Leap"
VERSION="15.6"
ID="opensuse-leap"
ID_LIKE="suse opensuse"
VERSION_ID="15.6"
PRETTY_NAME="openSUSE Leap 15.6"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:opensuse:leap:15.6"
BUG_REPORT_URL="https://bugs.opensuse.org"
HOME_URL="https://www.opensuse.org/"
DOCUMENTATION_URL="https://en.opensuse.org/Portal:Leap"
LOGO="distributor-logo-Leap"
suse:~ # systemctl restart mariadb
suse:~ # ps -ef | grep mysqld | grep -v "grep"
mysql    14001     1  0 08:04 ?        00:00:00 /usr/sbin/mysqld --defaults-file=/etc/my.cnf --user=mysql --socket=/run/mysql/mysql.sock
suse:~ # top -b -n 1 -p 14001 | tail -2
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
14001 mysql     20   0 2166868 255308  24064 S 0.000 12.64   0:00.09 mysqld
suse:~ # mariadb
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 5
Server version: 10.11.9-MariaDB-log MariaDB package

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> show global status like 'Memory_used';
+---------------+------------+
| Variable_name | Value      |
+---------------+------------+
| Memory_used   | 1416357840 |
+---------------+------------+
1 row in set (0.000 sec)

MariaDB [(none)]> drop schema if exists memtest;
Query OK, 0 rows affected (0.008 sec)

MariaDB [(none)]> create schema if not exists memtest; use memtest;
Query OK, 1 row affected (0.000 sec)

Database changed
MariaDB [memtest]> CREATE TABLE `BIGMEMORY`(`col1` int(11) NOT NULL AUTO_INCREMENT,`col2` varchar(1024) DEFAULT NULL,PRIMARY KEY (`col1`)) ENGINE=MEMORY;
Query OK, 0 rows affected (0.010 sec)

MariaDB [memtest]> insert into memtest.BIGMEMORY (col2)
    -> select concat(md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()),md5(rand()))
    -> from seq_1_to_358400;
Query OK, 358400 rows affected (12.481 sec)
Records: 358400  Duplicates: 0  Warnings: 0

MariaDB [memtest]> show global status like 'Memory_used';
+---------------+------------+
| Variable_name | Value      |
+---------------+------------+
| Memory_used   | 2896703752 |
+---------------+------------+
1 row in set (0.010 sec)

MariaDB [memtest]> \! top -b -n 1 -p 14001 | tail -2
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
14001 mysql     20   0 3674496 1.606g   7168 S 0.000 83.39   0:12.08 mysqld
MariaDB [memtest]> truncate table memtest.BIGMEMORY;
Query OK, 0 rows affected (0.029 sec)

MariaDB [memtest]> show global status like 'Memory_used';
+---------------+------------+
| Variable_name | Value      |
+---------------+------------+
| Memory_used   | 1416693048 |
+---------------+------------+
1 row in set (0.000 sec)

MariaDB [memtest]> \! top -b -n 1 -p 14001 | tail -2
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
14001 mysql     20   0 3215744 1.165g   7680 S 0.000 60.47   0:12.11 mysqld
MariaDB [memtest]> select @@version_malloc_library;
+--------------------------+
| @@version_malloc_library |
+--------------------------+
| system                   |
+--------------------------+
1 row in set (0.001 sec)

MariaDB [memtest]> exit
Bye

suse:~ #
suse:~ # ldd --version
ldd (GNU libc) 2.38
Copyright (C) 2023 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.