Freeradius Database Threads

[Aurélio de Souza Ribeiro Neto]

   Hello all,

       I'm using FreeRadius 3.0.19 and MySQL 5.7

       In my radiusd.conf I have this for threads:

       thread pool {
         start_servers = 10
         max_servers = 64
         min_spare_servers = 6
         max_spare_servers = 20
         max_queue_size = 131072
         max_requests_per_server = 0
         auto_limit_acct = yes
      }

       Mysql is set to 2000 connections.

       Sometimes Freeradius open 2000 connections in database.

       Any hint?

   Thanks