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OpenBSD was also one of the first operating systems to disable hyper-threading by default due to all the related security issues with this technology. Yet anoth
by binkHN 3y ago
OpenBSD was also one of the first operating systems to disable hyper-threading by default due to all the related security issues with this technology. Yet another case of security over speed.
- hulitu 3y agoHyper-threading, at least in the beginning, had limited if any performance improvement when enabled. Windows (XP, 7), at least, was faster at work with hyper-threading disabled. I'm still waiting for benchmarks which show more than a 5% increase in performance with hyper-threading enabled.
- loeg 3y agoIf you haven't seen a >5% performance improvement for any workload with HT/SMT enabled, you're just willfully blinding yourself to benchmark data. It can be closer to 80% than 5%, at least for some reasonable workloads.