Hi, I have several nodes with FreeSWICH, typically 2 socket Xeon v2 (with 8-12 cores every socket) and 64~128GB of RAM. I'm testing different configurations for max performance. I run FreeSWITCH containers (with docker and macvlan network), the base system is Ubuntu 18.04 and I run 4 containers for machine (max concurrency about 500-700 calls and max cps 200, limited in FreeSWITCH config). But I have some questions about the base config of my servers: 1. Is better cpu hyperthreading enabled or disabled? 2. Is relevant NUMA placement for FreeSWITCH (now I bind 2 FreeSWITCH processes to one NUMA node of the machine)? 3. Is it recommended cpu pinning to avoid excessive context switching? (my opinion is yes, but I don't know if the performance difference is too high) 4. I run default Ubuntu kernel (generic ubuntu flavor, with kernel CONFIG_HZ_250=y), but I can change to the "low latency" version, with CONFIG_HZ=1000. Witch is better? I have tested the two versions with timer_test command in FreeSWITCH and I haven't seen any differences (with no load): Avg: 20.000ms Total Time: 1000.002ms Any other advise about network tunning? PD: the containers are Debian Buster with FreeSWITCH 1.10.1 Best regards -- Jose