Processes reading and writing directly to FPGA/NIC ring buffers.
Shunning TCP in favour of UDP based protocols that are easy to optimize for your particular usecas in userspace.
Removing cores from the Linux scheduler entirely and pinning processes to those cores.
This stuff isn't even novel, it's been standard practice for a couple of decades.
Processes reading and writing directly to FPGA/NIC ring buffers.
Shunning TCP in favour of UDP based protocols that are easy to optimize for your particular usecas in userspace.
Removing cores from the Linux scheduler entirely and pinning processes to those cores.
This stuff isn't even novel, it's been standard practice for a couple of decades.