The jump in rhel from 6 to 7 basically made it incredibly hard to tune Linux for very low latency performance requirements. Fairly simple on 6 but 7 made it ver

The jump in rhel from 6 to 7 basically made it incredibly hard to tune Linux for very low latency performance requirements. Fairly simple on 6 but 7 made it very difficult. There are lots of tools available, nohz etc, but it doesn't help much. Primary core on each numa node is also loaded with kernel threads causing huge amounts of jitter. Basically everything is tuned for running web apps with loads of procs for people who don't really care about latency of 100s of millis.