Date: Tue, 3 Apr 2007 20:57:21 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Jonathan Horne <freebsd@dfwlp.com> Cc: freebsd-questions@freebsd.org Subject: Re: trouble with HT Message-ID: <20070404005721.GA19966@xor.obsecurity.org> In-Reply-To: <20070403194555.4a9d1f2f.freebsd@dfwlp.com> References: <20070403194555.4a9d1f2f.freebsd@dfwlp.com>
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On Tue, Apr 03, 2007 at 07:45:55PM -0500, Jonathan Horne wrote: > building a new system, processor is: > > CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2793.20-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0xf29 Stepping = 9 > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR, > PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT, > TM,PBE> > Features2=0x4400<CNTX-ID,<b14>> > > and the chipset is Intel 865G. in 6.2, the old method of enabling HT with sysctl.conf seems to be depricated, as i got a nastygram from dmesg that im a dummy on boot up (so i took those back out). then i read thru some docs, and apparently, HT is supposed to be enabled in the base release now. > > strange part is, for a while, 'top -C' would show me the C column, and i actually could see some 0's and 1's, so i went about my business of building ports. now that i go back, the -C is no longer being obeyed, and i cant get the C column to appear. That suggests you may have rebuilt your kernel without SMP support. > how can i verify that HT is working? my mobo (IBM 8189) doesnt seem to have an on/off for HT, so my first inclenation is assume that its on (we have many windows machines running on this hardware, and HT never seems to be a problem with those). > > any pointers would be appreciated (and yes, already know alllll about the security advisories... :) And about the possible poor performance I assume :) Kris
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