Yes, it is pretty common.

However sometimes the buffers are pooled so buffer allocator contention only occurs within the network stack or within a particular nic.

Many bare metal or RTOS systems consist of a handful of statically linked programs (one or two bootloaders and the main application), many companies would rather find a non-GPL library rather than open up the rest of the system's code. Sometimes a system contains proprietary code that may not be open sourced as well.

> The optimizations that'd be applied to ARM and MIPS would be equally applicable to RISC-V.

There's no carry bit, and no widening multiply(or MAC)

Saw at the podiatrist that someone named a shoe company Kuru, presumably not after the prison disease affecting gait.