Messages in this thread | | | Subject | Re: [PATCH 1/4] [x86] Add command line option to enable/disable hyper-threading. | Date | Fri, 1 Dec 2006 11:13:27 -0600 | From | Mark Rustad <> |
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On Dec 1, 2006, at 10:56 AM, Alan wrote: >> So I think people have blown those SSL timing attacks _way_ out of >> proportion, just because it sounds technical and cool. >> >> Besides, most of the time you can disable HT in the BIOS, which is >> better >> anyway if you don't want it. > > Agreed - but the SSL thing is an irrelevance. The main reason for > disabling HT (especially on a single core CPU) is because a lot of > workloads run faster with HT *off*.
Yes. Another way to effectively turn it off is to set maxcpus to the number of physical cpus in your system. So far I have not encountered a system that that approach does not work on.
-- Mark Rustad, MRustad@mac.com
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