Reply to post: People abusing the technology leads to problems...

OpenBSD disables Intel’s hyper-threading over CPU data leak fears


People abusing the technology leads to problems...

From the parts of HW that hyper threads have shared (though they are increasingly becoming separate processes by virtue of less HW being shared as time goes on), threads were designed to speed up different threads in the SAME program.

It's never been a good fit for unrelated applications as it causes too much non-shared resource contention which can result in slower performance than running the two separate apps on different cpus.

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