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The cost of thread context switch, including cache invalidation, can reach up to 3 million CPU cycles

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RTTI can be quite expensive, with dynamic_cast<> being up to 5x more expensive than a simple virtual function call

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as active portion of the stack is accessed extremely frequently, it is almost-guaranteed to be cached

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main memory access latencies of an x64 desktop box, and an M4 Apple SoC happen to be in the same ballpark of about 200-300 CPU cycles

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Performance-wise, Golang is closer to Node.js than to C/C++

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concurrency (leave alone efficient concurrency) is never easy

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While L3 kernel can STILL run on MMU-less RAM-constrained MCUs, it provides responsiveness which is comparable to that of multi-stack kernels.

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multi-coring is essentially a special case of balancing shared-nothing nodes