Date: Mon, 24 Apr 2006 14:50:26 -0700 From: Colin Percival <cperciva@freebsd.org> To: Stefan Bethke <stb@lassitu.de> Cc: freebsd-security@freebsd.org Subject: Re: cvs commit: src/sys/amd64/amd64 mp_machdep.c src/sys/i386/i386 mp_machdep.c Message-ID: <444D4822.3070102@freebsd.org> In-Reply-To: <662E8E58-F87F-4098-B573-06A863B72B7B@lassitu.de> References: <200604242117.k3OLH2RG032117@repoman.freebsd.org> <662E8E58-F87F-4098-B573-06A863B72B7B@lassitu.de>
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Stefan Bethke wrote: > Am 24.04.2006 um 23:17 schrieb Colin Percival: >> FreeBSD src repository >> >> Modified files: >> sys/amd64/amd64 mp_machdep.c >> sys/i386/i386 mp_machdep.c > > I do not pretend to understand the background, but from your description > it sounds like performance on Core Duo machines will be bad unless this > change is made, or the potentially dangerous sysctl is active. If that > is indeed the case, will this change make it into 6.1? I'm not part of the release engineering team, but I think they're hoping to merge this before the release, yes. If anyone has a Core Duo system running -CURRENT and can tell me what # sysctl machdep.hyperthreading_allowed # sysctl machdep.hlt_cpus says before and after this change, it would probably speed up the process of merging this into other branches. Colin Percivalhome | help
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