Date: Tue, 14 Mar 2006 15:27:15 -0500 From: Bill Moran <wmoran@collaborativefusion.com> To: freebsd-amd64@freebsd.org Subject: Re: How is hyperthreading handled on amd64? Message-ID: <20060314152715.a22b31fa.wmoran@collaborativefusion.com> In-Reply-To: <200603141041.19069.jhb@freebsd.org> References: <20060313085431.0eb059d9.wmoran@collaborativefusion.com> <200603131532.53869.jhb@freebsd.org> <20060314093614.e5247e95.wmoran@collaborativefusion.com> <200603141041.19069.jhb@freebsd.org>
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On Tue, 14 Mar 2006 10:41:17 -0500 John Baldwin <jhb@freebsd.org> wrote: [snip] > > > This is a dmesg from an SMP kernel this time. :) > > > > > > Can you provide the output from 'sysctl machdep'? > > > > machdep.hlt_cpus: 2 > > machdep.hlt_logical_cpus: 0 > > machdep.logical_cpus_mask: 2 > > machdep.hyperthreading_allowed: 0 > > Ok, the mask is right (CPU 1 is marked as a hyperthread), and > it's marked as disabled in hlt_cpus. I think I know what is > happening. Can you update to the latest RELENG_6 and see if the > issue still occurs. Just finished. The newly built kernel seems to be acting the same as the 6.0-RELEASE kernel was. (i.e. the problem is still there) Are there any specific tests you'd like me to perform, or any other information you'd like me to gather? -- Bill Moran Collaborative Fusion Inc.
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