All Software function is very slow

When i click on Inventory - > All software function is very slow in ocs server 2.8.

it's taking too much time for process.

MariaDB [(none)]> show processlist ;
+----+------+-----------+--------+---------+------+----------------------+------------------------------------------------------------------------------------------------------+----------+
| Id | User | Host      | db     | Command | Time | State                | Info                                                                                                 | Progress |
+----+------+-----------+--------+---------+------+----------------------+------------------------------------------------------------------------------------------------------+----------+
|  2 | root | localhost | NULL   | Query   |    0 | NULL                 | show processlist                                                                                     |    0.000 |
|  3 | root | localhost | ocsweb | Sleep   |   16 |                      | NULL                                                                                                 |    0.000 |
|  4 | root | localhost | ocsweb | Query   |   16 | Copying to tmp table | SELECT SQL_CALC_FOUND_ROWS  *, count(CONCAT(s.NAME_ID,"_", s.VERSION_ID)) as nb, CONCAT(n.NAME,";",  |    0.000 |
+----+------+-----------+--------+---------+------+----------------------+------------------------------------------------------------------------------------------------------+----------+
3 rows in set (0.00 sec)

Please provide me solution.