[dom0]

> What modifications are required to be made to the linux kernel/tcp stack to take advantage of 48+ cores, in order to achieve a more linear scalability?

https://xkcd.com/619/ isn't a joke.

Linux is the default operating system of huge NUMA systems with hundreds of CPUs / thousands of cores.

[loeg]

They have put quite a bit of work into scaling, but that doesn't mean it's perfect yet.