Post #1514819
2026-04-20 11:03 UTC
To enable simultaneous multithreading (SMT) on #OpenBSD with the new hw.blockcpu sysctl remove the 'S', e.g.:
# sysctl hw.blockcpu
hw.blockcpu=SL
# sysctl hw.blockcpu=L
Keep the security implications in mind when enabling SMT.
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