Hi Alen, Right now in current version of my app, 1.) For accounting i am using pre-compiled FreeRADIUS queries with two tables approach one radacct for live and another for closed sessions. 2.) In update control i am updating in/out octets on another table for specific user total usage. (Also for Accounting) 3.) For Authentication/Authorization i am still using exec with php script, i am planning to move on perl, but still confuse because of some old posts about perl module. - MySQL server have 32GB RAM and 8-Core CPU with Mysql READ-COMMITED isolation mode. - MySQL server CPU usage is max to max 10% to 15% On high load. - FreeRADIUS server have 4GB RAM and 2-Core CPU. - FreeRADIUS server CPU usage is around 50 to 75%. but the half of total usage (around 30%) is by the system kernel itself. mostly these two function of the kernel. *5.29% [kernel] [k] copy_pte_range.isra.0 4.52% [kernel] [k] zap_pte_range.isra.0* - MySQL and FreeRADIUS is linked in the local network in one VPC of Amazon AWS. - The average load of internet subscriber is around 35k. and i set 5mins interim update time for every subscriber for accounting. - most of time is working fine, but some times it's gives below errors and hangs.. on client sides it's showing *radius time out.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client MARUTI-OFFICE port 41243 - ID: 74 due to unfinished request in module . Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client Sargasan port 43843 - ID: 39 due to unfinished request in module . Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client kathlal port 45688 - ID: 18 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : WARNING: (4098875) WARNING: Module rlm_sql became unblocked* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client omnet port 54191 - ID: 82 due to unfinished request in module sql. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client Vadhvan-GIDC port 50558 - ID: 247 due to unfinished request in module . Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client GULIA port 60073 - ID: 21 due to unfinished request in module . Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client G_NET port 58334 - ID: 158 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client omnet port 42216 - ID: 84 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client KUHA_1009 port 39064 - ID: 103 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client mansa port 35213 - ID: 73 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client omnet port 48780 - ID: 83 due to unfinished request in module sql. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client omnet port 60583 - ID: 87 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client omnet port 55875 - ID: 86 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: Received conflicting packet from client omnet port 50524 - ID: 85 due to unfinished request in module <queue>. Giving up on old request.* *Thu Sep 29 07:40:54 2022 : Error: (4098887) Ignoring duplicate packet from client Skynet-Agra-BNG port 37257 - ID: 1 due to unfinished request in component <core> module <queue>* *Thu Sep 29 07:40:54 2022 : WARNING: (4098878) WARNING: Module rlm_sql became unblocked* Thanks Imdad 😊