4 hours is passed. The web-based service is okay with "wait_timeout=8hours" and "max_allowed_packet=100MB". 

I am planning to execute aging test for 3 days at least. 

BTW, Can we check inactivity time (e.g., wait_timeout) that MariaDB waits

before it will be close a connection with "mytop" command like the below content?

u164.04$ mytop -u root -p*** [enter]

MySQL on localhost (10.0.29)             load 0.24 0.26 0.27 1/563 18515 up 0+23:47:16 [15:22:38]

 Queries: 5.2k     qps:    0 Slow:     0.0         Se/In/Up/De(%):    07/00/00/00 

 Sorts:      0 qps now:    1 Slow qps: 0.0  Threads:    3 (   1/   1) 00/00/00/00 

 Key Efficiency: 100.0%  Bps in/out:   1.7/233.2   Now in/out:  21.3/ 2.9k

       Id      User         Host/IP         DB         Time    Cmd    State Query                                        

       --      ----         -------         --       ----    ---    ----- ----------                                   

      781      root       localhost api_develo 28048   Sleep                                                       

      751       tic localhost:56454       pdk        4406    Sleep                                                       

     1084      root       localhost                        0       Query  init show full processlist 

BRs,

Geunsik Lim.