Date: Tue, 14 Mar 2006 09:36:14 -0500 From: Bill Moran <wmoran@collaborativefusion.com> To: freebsd-amd64@freebsd.org Subject: Re: How is hyperthreading handled on amd64? Message-ID: <20060314093614.e5247e95.wmoran@collaborativefusion.com> In-Reply-To: <200603131532.53869.jhb@freebsd.org> References: <20060313085431.0eb059d9.wmoran@collaborativefusion.com> <200603131406.36636.jhb@freebsd.org> <20060313150423.2b475fd4.wmoran@collaborativefusion.com> <200603131532.53869.jhb@freebsd.org>
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On Mon, 13 Mar 2006 15:32:51 -0500 John Baldwin <jhb@freebsd.org> wrote: > On Monday 13 March 2006 15:04, Bill Moran wrote: > > On Mon, 13 Mar 2006 14:06:34 -0500 > > John Baldwin <jhb@freebsd.org> wrote: > > > > [...] > > > > I can't argue that the boot messages don't seem to show anything to > > > > indicate that a second logical CPU was found. > > > > > > Grab the dmesg from /var/run/dmesg.boot rather than /var/log/messages > > > please. > > > > Copyright (c) 1992-2005 The FreeBSD Project. > > Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 > > The Regents of the University of California. All rights reserved. > > FreeBSD 6.0-RELEASE-p5 #1: Fri Mar 10 16:57:56 EST 2006 > > root@:/usr/obj/usr/src/sys/DB64 > > Timecounter "i8254" frequency 1193182 Hz quality 0 > > CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2992.71-MHz K8-class CPU) > > Origin = "GenuineIntel" Id = 0xf41 Stepping = 1 > > 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=0x641d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,CX16,<b14>> > > AMD Features=0x20000800<SYSCALL,LM> > > Hyperthreading: 2 logical CPUs > > real memory = 2147221504 (2047 MB) > > avail memory = 2066378752 (1970 MB) > > ACPI APIC Table: <DELL PE BKC > > > FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs > > cpu0 (BSP): APIC ID: 0 > > cpu1 (AP): APIC ID: 1 > > This is a dmesg from an SMP kernel this time. :) > > Can you provide the output from 'sysctl machdep'? machdep.adjkerntz: 18000 machdep.disable_rtc_set: 0 machdep.wall_cmos_clock: 1 machdep.acpi_timer_freq: 3579545 machdep.acpi_root: 1038016 machdep.disable_mtrrs: 0 machdep.cpu_idle_hlt: 1 machdep.hlt_cpus: 2 machdep.panic_on_nmi: 1 machdep.tsc_freq: 2992705365 machdep.i8254_freq: 1193182 machdep.conspeed: 9600 machdep.gdbspeed: 9600 machdep.conrclk: 1843200 machdep.enable_panic_key: 0 machdep.hlt_logical_cpus: 0 machdep.logical_cpus_mask: 2 machdep.hyperthreading_allowed: 0 -- Bill Moran Collaborative Fusion Inc.
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