4 ms·

I'm not an expert but here's my intuition. The L1 cache is very fast and each core has its own 32 kilobytes or so cache. If we could send between L1 caches of

• gpderetta 3y ago
  You can already have sub 100ns latency on core-to-core communication on some common machines. And yes, thank if the magic of bus snooping the transfer can in practice happen cache to cache, although counterintuitively it is not necessarily what you want for message queues.